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From xu...@apache.org
Subject svn commit: r1656573 [4/6] - in /hive/branches/spark: data/conf/spark/ data/conf/spark/standalone/ data/conf/spark/yarn-client/ itests/ itests/qtest-spark/ itests/src/test/resources/ itests/util/src/main/java/org/apache/hadoop/hive/ql/ ql/src/java/org/...
Date Mon, 02 Feb 2015 21:10:08 GMT
Added: hive/branches/spark/ql/src/test/results/clientpositive/spark/ql_rewrite_gbtoidx.q.out
URL: http://svn.apache.org/viewvc/hive/branches/spark/ql/src/test/results/clientpositive/spark/ql_rewrite_gbtoidx.q.out?rev=1656573&view=auto
==============================================================================
--- hive/branches/spark/ql/src/test/results/clientpositive/spark/ql_rewrite_gbtoidx.q.out (added)
+++ hive/branches/spark/ql/src/test/results/clientpositive/spark/ql_rewrite_gbtoidx.q.out Mon Feb  2 21:10:08 2015
@@ -0,0 +1,2730 @@
+PREHOOK: query: DROP TABLE IF EXISTS lineitem_ix
+PREHOOK: type: DROPTABLE
+POSTHOOK: query: DROP TABLE IF EXISTS lineitem_ix
+POSTHOOK: type: DROPTABLE
+PREHOOK: query: CREATE TABLE lineitem_ix (L_ORDERKEY      INT,
+                                L_PARTKEY       INT,
+                                L_SUPPKEY       INT,
+                                L_LINENUMBER    INT,
+                                L_QUANTITY      DOUBLE,
+                                L_EXTENDEDPRICE DOUBLE,
+                                L_DISCOUNT      DOUBLE,
+                                L_TAX           DOUBLE,
+                                L_RETURNFLAG    STRING,
+                                L_LINESTATUS    STRING,
+                                l_shipdate      STRING,
+                                L_COMMITDATE    STRING,
+                                L_RECEIPTDATE   STRING,
+                                L_SHIPINSTRUCT  STRING,
+                                L_SHIPMODE      STRING,
+                                L_COMMENT       STRING)
+ROW FORMAT DELIMITED
+FIELDS TERMINATED BY '|'
+PREHOOK: type: CREATETABLE
+PREHOOK: Output: database:default
+PREHOOK: Output: default@lineitem_ix
+POSTHOOK: query: CREATE TABLE lineitem_ix (L_ORDERKEY      INT,
+                                L_PARTKEY       INT,
+                                L_SUPPKEY       INT,
+                                L_LINENUMBER    INT,
+                                L_QUANTITY      DOUBLE,
+                                L_EXTENDEDPRICE DOUBLE,
+                                L_DISCOUNT      DOUBLE,
+                                L_TAX           DOUBLE,
+                                L_RETURNFLAG    STRING,
+                                L_LINESTATUS    STRING,
+                                l_shipdate      STRING,
+                                L_COMMITDATE    STRING,
+                                L_RECEIPTDATE   STRING,
+                                L_SHIPINSTRUCT  STRING,
+                                L_SHIPMODE      STRING,
+                                L_COMMENT       STRING)
+ROW FORMAT DELIMITED
+FIELDS TERMINATED BY '|'
+POSTHOOK: type: CREATETABLE
+POSTHOOK: Output: database:default
+POSTHOOK: Output: default@lineitem_ix
+PREHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/lineitem.txt' OVERWRITE INTO TABLE lineitem_ix
+PREHOOK: type: LOAD
+#### A masked pattern was here ####
+PREHOOK: Output: default@lineitem_ix
+POSTHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/lineitem.txt' OVERWRITE INTO TABLE lineitem_ix
+POSTHOOK: type: LOAD
+#### A masked pattern was here ####
+POSTHOOK: Output: default@lineitem_ix
+PREHOOK: query: CREATE INDEX lineitem_ix_lshipdate_idx ON TABLE lineitem_ix(l_shipdate) AS 'org.apache.hadoop.hive.ql.index.AggregateIndexHandler' WITH DEFERRED REBUILD IDXPROPERTIES("AGGREGATES"="count(l_shipdate)")
+PREHOOK: type: CREATEINDEX
+PREHOOK: Input: default@lineitem_ix
+POSTHOOK: query: CREATE INDEX lineitem_ix_lshipdate_idx ON TABLE lineitem_ix(l_shipdate) AS 'org.apache.hadoop.hive.ql.index.AggregateIndexHandler' WITH DEFERRED REBUILD IDXPROPERTIES("AGGREGATES"="count(l_shipdate)")
+POSTHOOK: type: CREATEINDEX
+POSTHOOK: Input: default@lineitem_ix
+POSTHOOK: Output: default@default__lineitem_ix_lineitem_ix_lshipdate_idx__
+PREHOOK: query: ALTER INDEX lineitem_ix_lshipdate_idx ON lineitem_ix REBUILD
+PREHOOK: type: ALTERINDEX_REBUILD
+PREHOOK: Input: default@lineitem_ix
+PREHOOK: Output: default@default__lineitem_ix_lineitem_ix_lshipdate_idx__
+POSTHOOK: query: ALTER INDEX lineitem_ix_lshipdate_idx ON lineitem_ix REBUILD
+POSTHOOK: type: ALTERINDEX_REBUILD
+POSTHOOK: Input: default@lineitem_ix
+POSTHOOK: Output: default@default__lineitem_ix_lineitem_ix_lshipdate_idx__
+POSTHOOK: Lineage: default__lineitem_ix_lineitem_ix_lshipdate_idx__._bucketname SIMPLE [(lineitem_ix)lineitem_ix.FieldSchema(name:INPUT__FILE__NAME, type:string, comment:), ]
+POSTHOOK: Lineage: default__lineitem_ix_lineitem_ix_lshipdate_idx__._count_of_l_shipdate EXPRESSION [(lineitem_ix)lineitem_ix.FieldSchema(name:l_shipdate, type:string, comment:null), ]
+POSTHOOK: Lineage: default__lineitem_ix_lineitem_ix_lshipdate_idx__._offsets EXPRESSION [(lineitem_ix)lineitem_ix.FieldSchema(name:BLOCK__OFFSET__INSIDE__FILE, type:bigint, comment:), ]
+POSTHOOK: Lineage: default__lineitem_ix_lineitem_ix_lshipdate_idx__.l_shipdate SIMPLE [(lineitem_ix)lineitem_ix.FieldSchema(name:l_shipdate, type:string, comment:null), ]
+PREHOOK: query: explain select l_shipdate, count(l_shipdate)
+from lineitem_ix
+group by l_shipdate
+PREHOOK: type: QUERY
+POSTHOOK: query: explain select l_shipdate, count(l_shipdate)
+from lineitem_ix
+group by l_shipdate
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Spark
+      Edges:
+        Reducer 2 <- Map 1 (GROUP, 4)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: lineitem_ix
+                  Statistics: Num rows: 120 Data size: 12099 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: l_shipdate (type: string)
+                    outputColumnNames: l_shipdate
+                    Statistics: Num rows: 120 Data size: 12099 Basic stats: COMPLETE Column stats: NONE
+                    Group By Operator
+                      aggregations: count(l_shipdate)
+                      keys: l_shipdate (type: string)
+                      mode: hash
+                      outputColumnNames: _col0, _col1
+                      Statistics: Num rows: 120 Data size: 12099 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: string)
+                        sort order: +
+                        Map-reduce partition columns: _col0 (type: string)
+                        Statistics: Num rows: 120 Data size: 12099 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col1 (type: bigint)
+        Reducer 2 
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: string)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1
+                Statistics: Num rows: 60 Data size: 6049 Basic stats: COMPLETE Column stats: NONE
+                Select Operator
+                  expressions: _col0 (type: string), _col1 (type: bigint)
+                  outputColumnNames: _col0, _col1
+                  Statistics: Num rows: 60 Data size: 6049 Basic stats: COMPLETE Column stats: NONE
+                  File Output Operator
+                    compressed: false
+                    Statistics: Num rows: 60 Data size: 6049 Basic stats: COMPLETE Column stats: NONE
+                    table:
+                        input format: org.apache.hadoop.mapred.TextInputFormat
+                        output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
+                        serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+
+  Stage: Stage-0
+    Fetch Operator
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: select l_shipdate, count(l_shipdate)
+from lineitem_ix
+group by l_shipdate
+order by l_shipdate
+PREHOOK: type: QUERY
+PREHOOK: Input: default@lineitem_ix
+#### A masked pattern was here ####
+POSTHOOK: query: select l_shipdate, count(l_shipdate)
+from lineitem_ix
+group by l_shipdate
+order by l_shipdate
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@lineitem_ix
+#### A masked pattern was here ####
+1992-04-27	1
+1992-07-02	1
+1992-07-10	1
+1992-07-21	1
+1993-04-01	1
+1993-04-13	1
+1993-05-14	1
+1993-10-29	2
+1993-11-09	2
+1993-12-04	1
+1993-12-09	2
+1993-12-14	1
+1994-01-12	1
+1994-01-16	1
+1994-01-26	2
+1994-02-02	1
+1994-02-13	1
+1994-02-19	1
+1994-02-21	1
+1994-03-03	1
+1994-03-17	1
+1994-06-03	1
+1994-06-06	1
+1994-07-02	1
+1994-07-19	1
+1994-07-31	1
+1994-08-08	1
+1994-08-17	1
+1994-08-24	1
+1994-09-30	1
+1994-10-03	1
+1994-10-16	1
+1994-10-31	1
+1994-12-01	1
+1994-12-24	1
+1994-12-30	1
+1995-04-20	1
+1995-07-06	1
+1995-07-17	1
+1995-07-21	1
+1995-08-04	1
+1995-08-07	1
+1995-08-14	1
+1995-08-28	1
+1995-10-23	1
+1995-11-08	1
+1995-11-26	1
+1996-01-10	1
+1996-01-15	1
+1996-01-16	1
+1996-01-19	1
+1996-01-22	1
+1996-01-29	1
+1996-01-30	1
+1996-02-01	2
+1996-02-03	1
+1996-02-10	1
+1996-02-11	1
+1996-02-21	1
+1996-03-13	1
+1996-03-21	1
+1996-03-30	1
+1996-04-12	1
+1996-04-21	1
+1996-05-07	1
+1996-09-26	1
+1996-09-29	1
+1996-10-02	1
+1996-10-17	1
+1996-11-04	1
+1996-11-14	1
+1996-12-08	1
+1997-01-25	1
+1997-01-27	1
+1997-01-28	1
+1997-02-20	1
+1997-03-18	1
+1997-04-17	1
+1997-04-19	1
+1998-01-29	1
+1998-02-23	1
+1998-03-05	1
+1998-04-10	1
+1998-04-12	1
+1998-05-23	1
+1998-06-19	1
+1998-06-24	1
+1998-06-26	1
+1998-06-27	1
+1998-07-04	1
+1998-08-11	1
+1998-08-13	1
+1998-10-09	1
+1998-10-23	1
+1998-10-30	1
+PREHOOK: query: explain select l_shipdate, count(l_shipdate)
+from lineitem_ix
+group by l_shipdate
+PREHOOK: type: QUERY
+POSTHOOK: query: explain select l_shipdate, count(l_shipdate)
+from lineitem_ix
+group by l_shipdate
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Spark
+      Edges:
+        Reducer 2 <- Map 1 (GROUP, 4)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: default.default__lineitem_ix_lineitem_ix_lshipdate_idx__
+                  Statistics: Num rows: 95 Data size: 8960 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: l_shipdate (type: string), _count_of_l_shipdate (type: bigint)
+                    outputColumnNames: l_shipdate, _count_of_l_shipdate
+                    Statistics: Num rows: 95 Data size: 8960 Basic stats: COMPLETE Column stats: NONE
+                    Group By Operator
+                      aggregations: sum(_count_of_l_shipdate)
+                      keys: l_shipdate (type: string)
+                      mode: hash
+                      outputColumnNames: _col0, _col1
+                      Statistics: Num rows: 95 Data size: 8960 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: string)
+                        sort order: +
+                        Map-reduce partition columns: _col0 (type: string)
+                        Statistics: Num rows: 95 Data size: 8960 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col1 (type: bigint)
+        Reducer 2 
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: sum(VALUE._col0)
+                keys: KEY._col0 (type: string)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1
+                Statistics: Num rows: 47 Data size: 4432 Basic stats: COMPLETE Column stats: NONE
+                Select Operator
+                  expressions: _col0 (type: string), _col1 (type: bigint)
+                  outputColumnNames: _col0, _col1
+                  Statistics: Num rows: 47 Data size: 4432 Basic stats: COMPLETE Column stats: NONE
+                  File Output Operator
+                    compressed: false
+                    Statistics: Num rows: 47 Data size: 4432 Basic stats: COMPLETE Column stats: NONE
+                    table:
+                        input format: org.apache.hadoop.mapred.TextInputFormat
+                        output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
+                        serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+
+  Stage: Stage-0
+    Fetch Operator
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: select l_shipdate, count(l_shipdate)
+from lineitem_ix
+group by l_shipdate
+order by l_shipdate
+PREHOOK: type: QUERY
+PREHOOK: Input: default@default__lineitem_ix_lineitem_ix_lshipdate_idx__
+PREHOOK: Input: default@lineitem_ix
+#### A masked pattern was here ####
+POSTHOOK: query: select l_shipdate, count(l_shipdate)
+from lineitem_ix
+group by l_shipdate
+order by l_shipdate
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@default__lineitem_ix_lineitem_ix_lshipdate_idx__
+POSTHOOK: Input: default@lineitem_ix
+#### A masked pattern was here ####
+1992-04-27	1
+1992-07-02	1
+1992-07-10	1
+1992-07-21	1
+1993-04-01	1
+1993-04-13	1
+1993-05-14	1
+1993-10-29	2
+1993-11-09	2
+1993-12-04	1
+1993-12-09	2
+1993-12-14	1
+1994-01-12	1
+1994-01-16	1
+1994-01-26	2
+1994-02-02	1
+1994-02-13	1
+1994-02-19	1
+1994-02-21	1
+1994-03-03	1
+1994-03-17	1
+1994-06-03	1
+1994-06-06	1
+1994-07-02	1
+1994-07-19	1
+1994-07-31	1
+1994-08-08	1
+1994-08-17	1
+1994-08-24	1
+1994-09-30	1
+1994-10-03	1
+1994-10-16	1
+1994-10-31	1
+1994-12-01	1
+1994-12-24	1
+1994-12-30	1
+1995-04-20	1
+1995-07-06	1
+1995-07-17	1
+1995-07-21	1
+1995-08-04	1
+1995-08-07	1
+1995-08-14	1
+1995-08-28	1
+1995-10-23	1
+1995-11-08	1
+1995-11-26	1
+1996-01-10	1
+1996-01-15	1
+1996-01-16	1
+1996-01-19	1
+1996-01-22	1
+1996-01-29	1
+1996-01-30	1
+1996-02-01	2
+1996-02-03	1
+1996-02-10	1
+1996-02-11	1
+1996-02-21	1
+1996-03-13	1
+1996-03-21	1
+1996-03-30	1
+1996-04-12	1
+1996-04-21	1
+1996-05-07	1
+1996-09-26	1
+1996-09-29	1
+1996-10-02	1
+1996-10-17	1
+1996-11-04	1
+1996-11-14	1
+1996-12-08	1
+1997-01-25	1
+1997-01-27	1
+1997-01-28	1
+1997-02-20	1
+1997-03-18	1
+1997-04-17	1
+1997-04-19	1
+1998-01-29	1
+1998-02-23	1
+1998-03-05	1
+1998-04-10	1
+1998-04-12	1
+1998-05-23	1
+1998-06-19	1
+1998-06-24	1
+1998-06-26	1
+1998-06-27	1
+1998-07-04	1
+1998-08-11	1
+1998-08-13	1
+1998-10-09	1
+1998-10-23	1
+1998-10-30	1
+PREHOOK: query: explain select year(l_shipdate) as year,
+        month(l_shipdate) as month,
+        count(l_shipdate) as monthly_shipments
+from lineitem_ix
+group by year(l_shipdate), month(l_shipdate) 
+order by year, month
+PREHOOK: type: QUERY
+POSTHOOK: query: explain select year(l_shipdate) as year,
+        month(l_shipdate) as month,
+        count(l_shipdate) as monthly_shipments
+from lineitem_ix
+group by year(l_shipdate), month(l_shipdate) 
+order by year, month
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Spark
+      Edges:
+        Reducer 2 <- Map 1 (GROUP, 4)
+        Reducer 3 <- Reducer 2 (SORT, 1)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: lineitem_ix
+                  Statistics: Num rows: 120 Data size: 12099 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: l_shipdate (type: string)
+                    outputColumnNames: l_shipdate
+                    Statistics: Num rows: 120 Data size: 12099 Basic stats: COMPLETE Column stats: NONE
+                    Group By Operator
+                      aggregations: count(l_shipdate)
+                      keys: year(l_shipdate) (type: int), month(l_shipdate) (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1, _col2
+                      Statistics: Num rows: 120 Data size: 12099 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 120 Data size: 12099 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col2 (type: bigint)
+        Reducer 2 
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 60 Data size: 6049 Basic stats: COMPLETE Column stats: NONE
+                Reduce Output Operator
+                  key expressions: _col0 (type: int), _col1 (type: int)
+                  sort order: ++
+                  Statistics: Num rows: 60 Data size: 6049 Basic stats: COMPLETE Column stats: NONE
+                  value expressions: _col2 (type: bigint)
+        Reducer 3 
+            Reduce Operator Tree:
+              Select Operator
+                expressions: KEY.reducesinkkey0 (type: int), KEY.reducesinkkey1 (type: int), VALUE._col0 (type: bigint)
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 60 Data size: 6049 Basic stats: COMPLETE Column stats: NONE
+                File Output Operator
+                  compressed: false
+                  Statistics: Num rows: 60 Data size: 6049 Basic stats: COMPLETE Column stats: NONE
+                  table:
+                      input format: org.apache.hadoop.mapred.TextInputFormat
+                      output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
+                      serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+
+  Stage: Stage-0
+    Fetch Operator
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: select year(l_shipdate) as year,
+        month(l_shipdate) as month,
+        count(l_shipdate) as monthly_shipments
+from lineitem_ix
+group by year(l_shipdate), month(l_shipdate) 
+order by year, month
+PREHOOK: type: QUERY
+PREHOOK: Input: default@lineitem_ix
+#### A masked pattern was here ####
+POSTHOOK: query: select year(l_shipdate) as year,
+        month(l_shipdate) as month,
+        count(l_shipdate) as monthly_shipments
+from lineitem_ix
+group by year(l_shipdate), month(l_shipdate) 
+order by year, month
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@lineitem_ix
+#### A masked pattern was here ####
+1992	4	1
+1992	7	3
+1993	4	2
+1993	5	1
+1993	10	2
+1993	11	2
+1993	12	4
+1994	1	4
+1994	2	4
+1994	3	2
+1994	6	2
+1994	7	3
+1994	8	3
+1994	9	1
+1994	10	3
+1994	12	3
+1995	4	1
+1995	7	3
+1995	8	4
+1995	10	1
+1995	11	2
+1996	1	7
+1996	2	6
+1996	3	3
+1996	4	2
+1996	5	1
+1996	9	2
+1996	10	2
+1996	11	2
+1996	12	1
+1997	1	3
+1997	2	1
+1997	3	1
+1997	4	2
+1998	1	1
+1998	2	1
+1998	3	1
+1998	4	2
+1998	5	1
+1998	6	4
+1998	7	1
+1998	8	2
+1998	10	3
+PREHOOK: query: explain select year(l_shipdate) as year,
+        month(l_shipdate) as month,
+        count(l_shipdate) as monthly_shipments
+from lineitem_ix
+group by year(l_shipdate), month(l_shipdate) 
+order by year, month
+PREHOOK: type: QUERY
+POSTHOOK: query: explain select year(l_shipdate) as year,
+        month(l_shipdate) as month,
+        count(l_shipdate) as monthly_shipments
+from lineitem_ix
+group by year(l_shipdate), month(l_shipdate) 
+order by year, month
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Spark
+      Edges:
+        Reducer 2 <- Map 1 (GROUP, 4)
+        Reducer 3 <- Reducer 2 (SORT, 1)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: default.default__lineitem_ix_lineitem_ix_lshipdate_idx__
+                  Statistics: Num rows: 95 Data size: 8960 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: l_shipdate (type: string), _count_of_l_shipdate (type: bigint)
+                    outputColumnNames: l_shipdate, _count_of_l_shipdate
+                    Statistics: Num rows: 95 Data size: 8960 Basic stats: COMPLETE Column stats: NONE
+                    Group By Operator
+                      aggregations: sum(_count_of_l_shipdate)
+                      keys: year(l_shipdate) (type: int), month(l_shipdate) (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1, _col2
+                      Statistics: Num rows: 95 Data size: 8960 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 95 Data size: 8960 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col2 (type: bigint)
+        Reducer 2 
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: sum(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 47 Data size: 4432 Basic stats: COMPLETE Column stats: NONE
+                Reduce Output Operator
+                  key expressions: _col0 (type: int), _col1 (type: int)
+                  sort order: ++
+                  Statistics: Num rows: 47 Data size: 4432 Basic stats: COMPLETE Column stats: NONE
+                  value expressions: _col2 (type: bigint)
+        Reducer 3 
+            Reduce Operator Tree:
+              Select Operator
+                expressions: KEY.reducesinkkey0 (type: int), KEY.reducesinkkey1 (type: int), VALUE._col0 (type: bigint)
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 47 Data size: 4432 Basic stats: COMPLETE Column stats: NONE
+                File Output Operator
+                  compressed: false
+                  Statistics: Num rows: 47 Data size: 4432 Basic stats: COMPLETE Column stats: NONE
+                  table:
+                      input format: org.apache.hadoop.mapred.TextInputFormat
+                      output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
+                      serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+
+  Stage: Stage-0
+    Fetch Operator
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: select year(l_shipdate) as year,
+        month(l_shipdate) as month,
+        count(l_shipdate) as monthly_shipments
+from lineitem_ix
+group by year(l_shipdate), month(l_shipdate) 
+order by year, month
+PREHOOK: type: QUERY
+PREHOOK: Input: default@default__lineitem_ix_lineitem_ix_lshipdate_idx__
+PREHOOK: Input: default@lineitem_ix
+#### A masked pattern was here ####
+POSTHOOK: query: select year(l_shipdate) as year,
+        month(l_shipdate) as month,
+        count(l_shipdate) as monthly_shipments
+from lineitem_ix
+group by year(l_shipdate), month(l_shipdate) 
+order by year, month
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@default__lineitem_ix_lineitem_ix_lshipdate_idx__
+POSTHOOK: Input: default@lineitem_ix
+#### A masked pattern was here ####
+1992	4	1
+1992	7	3
+1993	4	2
+1993	5	1
+1993	10	2
+1993	11	2
+1993	12	4
+1994	1	4
+1994	2	4
+1994	3	2
+1994	6	2
+1994	7	3
+1994	8	3
+1994	9	1
+1994	10	3
+1994	12	3
+1995	4	1
+1995	7	3
+1995	8	4
+1995	10	1
+1995	11	2
+1996	1	7
+1996	2	6
+1996	3	3
+1996	4	2
+1996	5	1
+1996	9	2
+1996	10	2
+1996	11	2
+1996	12	1
+1997	1	3
+1997	2	1
+1997	3	1
+1997	4	2
+1998	1	1
+1998	2	1
+1998	3	1
+1998	4	2
+1998	5	1
+1998	6	4
+1998	7	1
+1998	8	2
+1998	10	3
+PREHOOK: query: explain select lastyear.month,
+        thisyear.month,
+        (thisyear.monthly_shipments - lastyear.monthly_shipments) /
+lastyear.monthly_shipments as monthly_shipments_delta
+   from (select year(l_shipdate) as year,
+                month(l_shipdate) as month,
+                count(l_shipdate) as monthly_shipments
+           from lineitem_ix
+          where year(l_shipdate) = 1997
+          group by year(l_shipdate), month(l_shipdate)
+        )  lastyear join
+        (select year(l_shipdate) as year,
+                month(l_shipdate) as month,
+                count(l_shipdate) as monthly_shipments
+           from lineitem_ix
+          where year(l_shipdate) = 1998
+          group by year(l_shipdate), month(l_shipdate)
+        )  thisyear
+  on lastyear.month = thisyear.month
+PREHOOK: type: QUERY
+POSTHOOK: query: explain select lastyear.month,
+        thisyear.month,
+        (thisyear.monthly_shipments - lastyear.monthly_shipments) /
+lastyear.monthly_shipments as monthly_shipments_delta
+   from (select year(l_shipdate) as year,
+                month(l_shipdate) as month,
+                count(l_shipdate) as monthly_shipments
+           from lineitem_ix
+          where year(l_shipdate) = 1997
+          group by year(l_shipdate), month(l_shipdate)
+        )  lastyear join
+        (select year(l_shipdate) as year,
+                month(l_shipdate) as month,
+                count(l_shipdate) as monthly_shipments
+           from lineitem_ix
+          where year(l_shipdate) = 1998
+          group by year(l_shipdate), month(l_shipdate)
+        )  thisyear
+  on lastyear.month = thisyear.month
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Spark
+      Edges:
+        Reducer 2 <- Map 1 (GROUP, 4)
+        Reducer 5 <- Map 4 (GROUP, 4)
+        Reducer 3 <- Reducer 2 (PARTITION-LEVEL SORT, 4), Reducer 5 (PARTITION-LEVEL SORT, 4)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: lastyear:default.default__lineitem_ix_lineitem_ix_lshipdate_idx__
+                  Statistics: Num rows: 95 Data size: 8960 Basic stats: COMPLETE Column stats: NONE
+                  Filter Operator
+                    predicate: (year(l_shipdate) = 1997) (type: boolean)
+                    Statistics: Num rows: 47 Data size: 4432 Basic stats: COMPLETE Column stats: NONE
+                    Select Operator
+                      expressions: l_shipdate (type: string), _count_of_l_shipdate (type: bigint)
+                      outputColumnNames: l_shipdate, _count_of_l_shipdate
+                      Statistics: Num rows: 47 Data size: 4432 Basic stats: COMPLETE Column stats: NONE
+                      Group By Operator
+                        aggregations: sum(_count_of_l_shipdate)
+                        keys: year(l_shipdate) (type: int), month(l_shipdate) (type: int)
+                        mode: hash
+                        outputColumnNames: _col0, _col1, _col2
+                        Statistics: Num rows: 47 Data size: 4432 Basic stats: COMPLETE Column stats: NONE
+                        Filter Operator
+                          predicate: _col1 is not null (type: boolean)
+                          Statistics: Num rows: 24 Data size: 2263 Basic stats: COMPLETE Column stats: NONE
+                          Reduce Output Operator
+                            key expressions: _col0 (type: int), _col1 (type: int)
+                            sort order: ++
+                            Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                            Statistics: Num rows: 24 Data size: 2263 Basic stats: COMPLETE Column stats: NONE
+                            value expressions: _col2 (type: bigint)
+        Map 4 
+            Map Operator Tree:
+                TableScan
+                  alias: thisyear:default.default__lineitem_ix_lineitem_ix_lshipdate_idx__
+                  Statistics: Num rows: 95 Data size: 8960 Basic stats: COMPLETE Column stats: NONE
+                  Filter Operator
+                    predicate: (year(l_shipdate) = 1998) (type: boolean)
+                    Statistics: Num rows: 47 Data size: 4432 Basic stats: COMPLETE Column stats: NONE
+                    Select Operator
+                      expressions: l_shipdate (type: string), _count_of_l_shipdate (type: bigint)
+                      outputColumnNames: l_shipdate, _count_of_l_shipdate
+                      Statistics: Num rows: 47 Data size: 4432 Basic stats: COMPLETE Column stats: NONE
+                      Group By Operator
+                        aggregations: sum(_count_of_l_shipdate)
+                        keys: year(l_shipdate) (type: int), month(l_shipdate) (type: int)
+                        mode: hash
+                        outputColumnNames: _col0, _col1, _col2
+                        Statistics: Num rows: 47 Data size: 4432 Basic stats: COMPLETE Column stats: NONE
+                        Filter Operator
+                          predicate: _col1 is not null (type: boolean)
+                          Statistics: Num rows: 24 Data size: 2263 Basic stats: COMPLETE Column stats: NONE
+                          Reduce Output Operator
+                            key expressions: _col0 (type: int), _col1 (type: int)
+                            sort order: ++
+                            Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                            Statistics: Num rows: 24 Data size: 2263 Basic stats: COMPLETE Column stats: NONE
+                            value expressions: _col2 (type: bigint)
+        Reducer 2 
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: sum(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 12 Data size: 1131 Basic stats: COMPLETE Column stats: NONE
+                Select Operator
+                  expressions: _col1 (type: int), _col2 (type: bigint)
+                  outputColumnNames: _col1, _col2
+                  Statistics: Num rows: 12 Data size: 1131 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: _col1 (type: int)
+                    sort order: +
+                    Map-reduce partition columns: _col1 (type: int)
+                    Statistics: Num rows: 12 Data size: 1131 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col2 (type: bigint)
+        Reducer 3 
+            Reduce Operator Tree:
+              Join Operator
+                condition map:
+                     Inner Join 0 to 1
+                keys:
+                  0 _col1 (type: int)
+                  1 _col1 (type: int)
+                outputColumnNames: _col1, _col2, _col4, _col5
+                Statistics: Num rows: 13 Data size: 1244 Basic stats: COMPLETE Column stats: NONE
+                Select Operator
+                  expressions: _col1 (type: int), _col4 (type: int), ((_col5 - _col2) / _col2) (type: double)
+                  outputColumnNames: _col0, _col1, _col2
+                  Statistics: Num rows: 13 Data size: 1244 Basic stats: COMPLETE Column stats: NONE
+                  File Output Operator
+                    compressed: false
+                    Statistics: Num rows: 13 Data size: 1244 Basic stats: COMPLETE Column stats: NONE
+                    table:
+                        input format: org.apache.hadoop.mapred.TextInputFormat
+                        output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
+                        serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+        Reducer 5 
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: sum(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 12 Data size: 1131 Basic stats: COMPLETE Column stats: NONE
+                Select Operator
+                  expressions: _col1 (type: int), _col2 (type: bigint)
+                  outputColumnNames: _col1, _col2
+                  Statistics: Num rows: 12 Data size: 1131 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: _col1 (type: int)
+                    sort order: +
+                    Map-reduce partition columns: _col1 (type: int)
+                    Statistics: Num rows: 12 Data size: 1131 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col2 (type: bigint)
+
+  Stage: Stage-0
+    Fetch Operator
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: explain  select l_shipdate, cnt
+from (select l_shipdate, count(l_shipdate) as cnt from lineitem_ix group by l_shipdate
+union all
+select l_shipdate, l_orderkey as cnt
+from lineitem_ix) dummy
+PREHOOK: type: QUERY
+POSTHOOK: query: explain  select l_shipdate, cnt
+from (select l_shipdate, count(l_shipdate) as cnt from lineitem_ix group by l_shipdate
+union all
+select l_shipdate, l_orderkey as cnt
+from lineitem_ix) dummy
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Spark
+      Edges:
+        Reducer 3 <- Map 2 (GROUP, 4)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: lineitem_ix
+                  Select Operator
+                    expressions: l_shipdate (type: string), UDFToLong(l_orderkey) (type: bigint)
+                    outputColumnNames: _col0, _col1
+                    Select Operator
+                      expressions: _col0 (type: string), _col1 (type: bigint)
+                      outputColumnNames: _col0, _col1
+                      File Output Operator
+                        compressed: false
+                        table:
+                            input format: org.apache.hadoop.mapred.TextInputFormat
+                            output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
+                            serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+        Map 2 
+            Map Operator Tree:
+                TableScan
+                  alias: null-subquery1:dummy-subquery1:default.default__lineitem_ix_lineitem_ix_lshipdate_idx__
+                  Statistics: Num rows: 95 Data size: 8960 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: l_shipdate (type: string), _count_of_l_shipdate (type: bigint)
+                    outputColumnNames: l_shipdate, _count_of_l_shipdate
+                    Statistics: Num rows: 95 Data size: 8960 Basic stats: COMPLETE Column stats: NONE
+                    Group By Operator
+                      aggregations: sum(_count_of_l_shipdate)
+                      keys: l_shipdate (type: string)
+                      mode: hash
+                      outputColumnNames: _col0, _col1
+                      Statistics: Num rows: 95 Data size: 8960 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: string)
+                        sort order: +
+                        Map-reduce partition columns: _col0 (type: string)
+                        Statistics: Num rows: 95 Data size: 8960 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col1 (type: bigint)
+        Reducer 3 
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: sum(VALUE._col0)
+                keys: KEY._col0 (type: string)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1
+                Select Operator
+                  expressions: _col0 (type: string), _col1 (type: bigint)
+                  outputColumnNames: _col0, _col1
+                  File Output Operator
+                    compressed: false
+                    table:
+                        input format: org.apache.hadoop.mapred.TextInputFormat
+                        output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
+                        serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+
+  Stage: Stage-0
+    Fetch Operator
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: CREATE TABLE tbl(key int, value int)
+PREHOOK: type: CREATETABLE
+PREHOOK: Output: database:default
+PREHOOK: Output: default@tbl
+POSTHOOK: query: CREATE TABLE tbl(key int, value int)
+POSTHOOK: type: CREATETABLE
+POSTHOOK: Output: database:default
+POSTHOOK: Output: default@tbl
+PREHOOK: query: CREATE INDEX tbl_key_idx ON TABLE tbl(key) AS 'org.apache.hadoop.hive.ql.index.AggregateIndexHandler' WITH DEFERRED REBUILD IDXPROPERTIES("AGGREGATES"="count(key)")
+PREHOOK: type: CREATEINDEX
+PREHOOK: Input: default@tbl
+POSTHOOK: query: CREATE INDEX tbl_key_idx ON TABLE tbl(key) AS 'org.apache.hadoop.hive.ql.index.AggregateIndexHandler' WITH DEFERRED REBUILD IDXPROPERTIES("AGGREGATES"="count(key)")
+POSTHOOK: type: CREATEINDEX
+POSTHOOK: Input: default@tbl
+POSTHOOK: Output: default@default__tbl_tbl_key_idx__
+PREHOOK: query: ALTER INDEX tbl_key_idx ON tbl REBUILD
+PREHOOK: type: ALTERINDEX_REBUILD
+PREHOOK: Input: default@tbl
+PREHOOK: Output: default@default__tbl_tbl_key_idx__
+POSTHOOK: query: ALTER INDEX tbl_key_idx ON tbl REBUILD
+POSTHOOK: type: ALTERINDEX_REBUILD
+POSTHOOK: Input: default@tbl
+POSTHOOK: Output: default@default__tbl_tbl_key_idx__
+POSTHOOK: Lineage: default__tbl_tbl_key_idx__._bucketname SIMPLE [(tbl)tbl.FieldSchema(name:INPUT__FILE__NAME, type:string, comment:), ]
+POSTHOOK: Lineage: default__tbl_tbl_key_idx__._count_of_key EXPRESSION [(tbl)tbl.FieldSchema(name:key, type:int, comment:null), ]
+POSTHOOK: Lineage: default__tbl_tbl_key_idx__._offsets EXPRESSION [(tbl)tbl.FieldSchema(name:BLOCK__OFFSET__INSIDE__FILE, type:bigint, comment:), ]
+POSTHOOK: Lineage: default__tbl_tbl_key_idx__.key SIMPLE [(tbl)tbl.FieldSchema(name:key, type:int, comment:null), ]
+PREHOOK: query: EXPLAIN select key, count(key) from tbl where key = 1 group by key
+PREHOOK: type: QUERY
+POSTHOOK: query: EXPLAIN select key, count(key) from tbl where key = 1 group by key
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Spark
+      Edges:
+        Reducer 2 <- Map 1 (GROUP, 4)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: tbl
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  Filter Operator
+                    predicate: (key = 1) (type: boolean)
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Select Operator
+                      expressions: 1 (type: int)
+                      outputColumnNames: key
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      Group By Operator
+                        aggregations: count(key)
+                        keys: key (type: int)
+                        mode: hash
+                        outputColumnNames: _col0, _col1
+                        Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                        Reduce Output Operator
+                          key expressions: _col0 (type: int)
+                          sort order: +
+                          Map-reduce partition columns: _col0 (type: int)
+                          Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                          value expressions: _col1 (type: bigint)
+        Reducer 2 
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                Select Operator
+                  expressions: _col0 (type: int), _col1 (type: bigint)
+                  outputColumnNames: _col0, _col1
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  File Output Operator
+                    compressed: false
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    table:
+                        input format: org.apache.hadoop.mapred.TextInputFormat
+                        output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
+                        serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+
+  Stage: Stage-0
+    Fetch Operator
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: EXPLAIN select key, count(key) from tbl group by key
+PREHOOK: type: QUERY
+POSTHOOK: query: EXPLAIN select key, count(key) from tbl group by key
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Spark
+      Edges:
+        Reducer 2 <- Map 1 (GROUP, 4)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: default.default__tbl_tbl_key_idx__
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int), _count_of_key (type: bigint)
+                    outputColumnNames: key, _count_of_key
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Group By Operator
+                      aggregations: sum(_count_of_key)
+                      keys: key (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int)
+                        sort order: +
+                        Map-reduce partition columns: _col0 (type: int)
+                        Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                        value expressions: _col1 (type: bigint)
+        Reducer 2 
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: sum(VALUE._col0)
+                keys: KEY._col0 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                Select Operator
+                  expressions: _col0 (type: int), _col1 (type: bigint)
+                  outputColumnNames: _col0, _col1
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  File Output Operator
+                    compressed: false
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    table:
+                        input format: org.apache.hadoop.mapred.TextInputFormat
+                        output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
+                        serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+
+  Stage: Stage-0
+    Fetch Operator
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: EXPLAIN select count(1) from tbl
+PREHOOK: type: QUERY
+POSTHOOK: query: EXPLAIN select count(1) from tbl
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Spark
+      Edges:
+        Reducer 2 <- Map 1 (GROUP, 1)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: tbl
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: COMPLETE
+                  Select Operator
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: COMPLETE
+                    Group By Operator
+                      aggregations: count(1)
+                      mode: hash
+                      outputColumnNames: _col0
+                      Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: COMPLETE
+                      Reduce Output Operator
+                        sort order: 
+                        Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: COMPLETE
+                        value expressions: _col0 (type: bigint)
+        Reducer 2 
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                mode: mergepartial
+                outputColumnNames: _col0
+                Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: COMPLETE
+                Select Operator
+                  expressions: _col0 (type: bigint)
+                  outputColumnNames: _col0
+                  Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: COMPLETE
+                  File Output Operator
+                    compressed: false
+                    Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: COMPLETE
+                    table:
+                        input format: org.apache.hadoop.mapred.TextInputFormat
+                        output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
+                        serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+
+  Stage: Stage-0
+    Fetch Operator
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: EXPLAIN select count(key) from tbl
+PREHOOK: type: QUERY
+POSTHOOK: query: EXPLAIN select count(key) from tbl
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Spark
+      Edges:
+        Reducer 2 <- Map 1 (GROUP, 1)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: default.default__tbl_tbl_key_idx__
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int), _count_of_key (type: bigint)
+                    outputColumnNames: key, _count_of_key
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Group By Operator
+                      aggregations: sum(_count_of_key)
+                      mode: hash
+                      outputColumnNames: _col0
+                      Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        sort order: 
+                        Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col0 (type: bigint)
+        Reducer 2 
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: sum(VALUE._col0)
+                mode: mergepartial
+                outputColumnNames: _col0
+                Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
+                Select Operator
+                  expressions: _col0 (type: bigint)
+                  outputColumnNames: _col0
+                  Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
+                  File Output Operator
+                    compressed: false
+                    Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
+                    table:
+                        input format: org.apache.hadoop.mapred.TextInputFormat
+                        output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
+                        serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+
+  Stage: Stage-0
+    Fetch Operator
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: EXPLAIN select key FROM tbl GROUP BY key
+PREHOOK: type: QUERY
+POSTHOOK: query: EXPLAIN select key FROM tbl GROUP BY key
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Spark
+      Edges:
+        Reducer 2 <- Map 1 (GROUP, 4)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: tbl
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int)
+                    outputColumnNames: key
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Group By Operator
+                      keys: key (type: int)
+                      mode: hash
+                      outputColumnNames: _col0
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int)
+                        sort order: +
+                        Map-reduce partition columns: _col0 (type: int)
+                        Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+        Reducer 2 
+            Reduce Operator Tree:
+              Group By Operator
+                keys: KEY._col0 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                Select Operator
+                  expressions: _col0 (type: int)
+                  outputColumnNames: _col0
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  File Output Operator
+                    compressed: false
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    table:
+                        input format: org.apache.hadoop.mapred.TextInputFormat
+                        output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
+                        serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+
+  Stage: Stage-0
+    Fetch Operator
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: EXPLAIN select key FROM tbl GROUP BY value, key
+PREHOOK: type: QUERY
+POSTHOOK: query: EXPLAIN select key FROM tbl GROUP BY value, key
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Spark
+      Edges:
+        Reducer 2 <- Map 1 (GROUP, 4)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: tbl
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  Select Operator
+                    expressions: value (type: int), key (type: int)
+                    outputColumnNames: value, key
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Group By Operator
+                      keys: value (type: int), key (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+        Reducer 2 
+            Reduce Operator Tree:
+              Group By Operator
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                Select Operator
+                  expressions: _col1 (type: int)
+                  outputColumnNames: _col0
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  File Output Operator
+                    compressed: false
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    table:
+                        input format: org.apache.hadoop.mapred.TextInputFormat
+                        output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
+                        serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+
+  Stage: Stage-0
+    Fetch Operator
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: EXPLAIN select key FROM tbl WHERE key = 3 GROUP BY key
+PREHOOK: type: QUERY
+POSTHOOK: query: EXPLAIN select key FROM tbl WHERE key = 3 GROUP BY key
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Spark
+      Edges:
+        Reducer 2 <- Map 1 (GROUP, 4)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: tbl
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  Filter Operator
+                    predicate: (key = 3) (type: boolean)
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Select Operator
+                      expressions: 3 (type: int)
+                      outputColumnNames: key
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      Group By Operator
+                        keys: key (type: int)
+                        mode: hash
+                        outputColumnNames: _col0
+                        Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                        Reduce Output Operator
+                          key expressions: _col0 (type: int)
+                          sort order: +
+                          Map-reduce partition columns: _col0 (type: int)
+                          Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+        Reducer 2 
+            Reduce Operator Tree:
+              Group By Operator
+                keys: KEY._col0 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                Select Operator
+                  expressions: _col0 (type: int)
+                  outputColumnNames: _col0
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  File Output Operator
+                    compressed: false
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    table:
+                        input format: org.apache.hadoop.mapred.TextInputFormat
+                        output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
+                        serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+
+  Stage: Stage-0
+    Fetch Operator
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: EXPLAIN select key FROM tbl WHERE value = 2 GROUP BY key
+PREHOOK: type: QUERY
+POSTHOOK: query: EXPLAIN select key FROM tbl WHERE value = 2 GROUP BY key
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Spark
+      Edges:
+        Reducer 2 <- Map 1 (GROUP, 4)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: tbl
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  Filter Operator
+                    predicate: (value = 2) (type: boolean)
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Select Operator
+                      expressions: key (type: int)
+                      outputColumnNames: key
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      Group By Operator
+                        keys: key (type: int)
+                        mode: hash
+                        outputColumnNames: _col0
+                        Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                        Reduce Output Operator
+                          key expressions: _col0 (type: int)
+                          sort order: +
+                          Map-reduce partition columns: _col0 (type: int)
+                          Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+        Reducer 2 
+            Reduce Operator Tree:
+              Group By Operator
+                keys: KEY._col0 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                Select Operator
+                  expressions: _col0 (type: int)
+                  outputColumnNames: _col0
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  File Output Operator
+                    compressed: false
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    table:
+                        input format: org.apache.hadoop.mapred.TextInputFormat
+                        output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
+                        serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+
+  Stage: Stage-0
+    Fetch Operator
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: EXPLAIN select key FROM tbl GROUP BY key, substr(key,2,3)
+PREHOOK: type: QUERY
+POSTHOOK: query: EXPLAIN select key FROM tbl GROUP BY key, substr(key,2,3)
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Spark
+      Edges:
+        Reducer 2 <- Map 1 (GROUP, 4)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: tbl
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int)
+                    outputColumnNames: key
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Group By Operator
+                      keys: key (type: int), substr(key, 2, 3) (type: string)
+                      mode: hash
+                      outputColumnNames: _col0, _col1
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: string)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: string)
+                        Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+        Reducer 2 
+            Reduce Operator Tree:
+              Group By Operator
+                keys: KEY._col0 (type: int), KEY._col1 (type: string)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                Select Operator
+                  expressions: _col0 (type: int)
+                  outputColumnNames: _col0
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  File Output Operator
+                    compressed: false
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    table:
+                        input format: org.apache.hadoop.mapred.TextInputFormat
+                        output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
+                        serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+
+  Stage: Stage-0
+    Fetch Operator
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: EXPLAIN select key, value FROM tbl GROUP BY value, key
+PREHOOK: type: QUERY
+POSTHOOK: query: EXPLAIN select key, value FROM tbl GROUP BY value, key
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Spark
+      Edges:
+        Reducer 2 <- Map 1 (GROUP, 4)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: tbl
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  Select Operator
+                    expressions: value (type: int), key (type: int)
+                    outputColumnNames: value, key
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Group By Operator
+                      keys: value (type: int), key (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+        Reducer 2 
+            Reduce Operator Tree:
+              Group By Operator
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                Select Operator
+                  expressions: _col1 (type: int), _col0 (type: int)
+                  outputColumnNames: _col0, _col1
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  File Output Operator
+                    compressed: false
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    table:
+                        input format: org.apache.hadoop.mapred.TextInputFormat
+                        output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
+                        serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+
+  Stage: Stage-0
+    Fetch Operator
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: EXPLAIN select key, value FROM tbl WHERE value = 1 GROUP BY key, value
+PREHOOK: type: QUERY
+POSTHOOK: query: EXPLAIN select key, value FROM tbl WHERE value = 1 GROUP BY key, value
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Spark
+      Edges:
+        Reducer 2 <- Map 1 (GROUP, 4)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: tbl
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  Filter Operator
+                    predicate: (value = 1) (type: boolean)
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Select Operator
+                      expressions: key (type: int), 1 (type: int)
+                      outputColumnNames: key, value
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      Group By Operator
+                        keys: key (type: int), value (type: int)
+                        mode: hash
+                        outputColumnNames: _col0, _col1
+                        Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                        Reduce Output Operator
+                          key expressions: _col0 (type: int), _col1 (type: int)
+                          sort order: ++
+                          Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                          Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+        Reducer 2 
+            Reduce Operator Tree:
+              Group By Operator
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                Select Operator
+                  expressions: _col0 (type: int), _col1 (type: int)
+                  outputColumnNames: _col0, _col1
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  File Output Operator
+                    compressed: false
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    table:
+                        input format: org.apache.hadoop.mapred.TextInputFormat
+                        output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
+                        serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+
+  Stage: Stage-0
+    Fetch Operator
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: EXPLAIN select DISTINCT key FROM tbl
+PREHOOK: type: QUERY
+POSTHOOK: query: EXPLAIN select DISTINCT key FROM tbl
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Spark
+      Edges:
+        Reducer 2 <- Map 1 (GROUP, 4)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: tbl
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int)
+                    outputColumnNames: key
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Group By Operator
+                      keys: key (type: int)
+                      mode: hash
+                      outputColumnNames: _col0
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int)
+                        sort order: +
+                        Map-reduce partition columns: _col0 (type: int)
+                        Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+        Reducer 2 
+            Reduce Operator Tree:
+              Group By Operator
+                keys: KEY._col0 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                Select Operator
+                  expressions: _col0 (type: int)
+                  outputColumnNames: _col0
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  File Output Operator
+                    compressed: false
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    table:
+                        input format: org.apache.hadoop.mapred.TextInputFormat
+                        output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
+                        serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+
+  Stage: Stage-0
+    Fetch Operator
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: EXPLAIN select DISTINCT key FROM tbl
+PREHOOK: type: QUERY
+POSTHOOK: query: EXPLAIN select DISTINCT key FROM tbl
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Spark
+      Edges:
+        Reducer 2 <- Map 1 (GROUP, 4)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: tbl
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int)
+                    outputColumnNames: key
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Group By Operator
+                      keys: key (type: int)
+                      mode: hash
+                      outputColumnNames: _col0
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int)
+                        sort order: +
+                        Map-reduce partition columns: _col0 (type: int)
+                        Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+        Reducer 2 
+            Reduce Operator Tree:
+              Group By Operator
+                keys: KEY._col0 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                Select Operator
+                  expressions: _col0 (type: int)
+                  outputColumnNames: _col0
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  File Output Operator
+                    compressed: false
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    table:
+                        input format: org.apache.hadoop.mapred.TextInputFormat
+                        output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
+                        serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+
+  Stage: Stage-0
+    Fetch Operator
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: EXPLAIN select DISTINCT key FROM tbl
+PREHOOK: type: QUERY
+POSTHOOK: query: EXPLAIN select DISTINCT key FROM tbl
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Spark
+      Edges:
+        Reducer 2 <- Map 1 (GROUP, 4)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: tbl
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int)
+                    outputColumnNames: key
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Group By Operator
+                      keys: key (type: int)
+                      mode: hash
+                      outputColumnNames: _col0
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int)
+                        sort order: +
+                        Map-reduce partition columns: _col0 (type: int)
+                        Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+        Reducer 2 
+            Reduce Operator Tree:
+              Group By Operator
+                keys: KEY._col0 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                Select Operator
+                  expressions: _col0 (type: int)
+                  outputColumnNames: _col0
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  File Output Operator
+                    compressed: false
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    table:
+                        input format: org.apache.hadoop.mapred.TextInputFormat
+                        output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
+                        serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+
+  Stage: Stage-0
+    Fetch Operator
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: EXPLAIN select DISTINCT key, value FROM tbl
+PREHOOK: type: QUERY
+POSTHOOK: query: EXPLAIN select DISTINCT key, value FROM tbl
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Spark
+      Edges:
+        Reducer 2 <- Map 1 (GROUP, 4)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: tbl
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int), value (type: int)
+                    outputColumnNames: key, value
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Group By Operator
+                      keys: key (type: int), value (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+        Reducer 2 
+            Reduce Operator Tree:
+              Group By Operator
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                Select Operator
+                  expressions: _col0 (type: int), _col1 (type: int)
+                  outputColumnNames: _col0, _col1
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  File Output Operator
+                    compressed: false
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    table:
+                        input format: org.apache.hadoop.mapred.TextInputFormat
+                        output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
+                        serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+
+  Stage: Stage-0
+    Fetch Operator
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: EXPLAIN select DISTINCT key, value FROM tbl WHERE value = 2
+PREHOOK: type: QUERY
+POSTHOOK: query: EXPLAIN select DISTINCT key, value FROM tbl WHERE value = 2
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Spark
+      Edges:
+        Reducer 2 <- Map 1 (GROUP, 4)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: tbl
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  Filter Operator
+                    predicate: (value = 2) (type: boolean)
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Select Operator
+                      expressions: key (type: int), 2 (type: int)
+                      outputColumnNames: key, value
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      Group By Operator
+                        keys: key (type: int), value (type: int)
+                        mode: hash
+                        outputColumnNames: _col0, _col1
+                        Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                        Reduce Output Operator
+                          key expressions: _col0 (type: int), _col1 (type: int)
+                          sort order: ++
+                          Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                          Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+        Reducer 2 
+            Reduce Operator Tree:
+              Group By Operator
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                Select Operator
+                  expressions: _col0 (type: int), _col1 (type: int)
+                  outputColumnNames: _col0, _col1
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  File Output Operator
+                    compressed: false
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    table:
+                        input format: org.apache.hadoop.mapred.TextInputFormat
+                        output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
+                        serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+
+  Stage: Stage-0
+    Fetch Operator
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: EXPLAIN select DISTINCT key, value FROM tbl WHERE value = 2 AND key = 3
+PREHOOK: type: QUERY
+POSTHOOK: query: EXPLAIN select DISTINCT key, value FROM tbl WHERE value = 2 AND key = 3
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Spark
+      Edges:
+        Reducer 2 <- Map 1 (GROUP, 4)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: tbl
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  Filter Operator
+                    predicate: ((value = 2) and (key = 3)) (type: boolean)
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Select Operator
+                      expressions: 3 (type: int), 2 (type: int)
+                      outputColumnNames: key, value
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      Group By Operator
+                        keys: key (type: int), value (type: int)
+                        mode: hash
+                        outputColumnNames: _col0, _col1
+                        Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                        Reduce Output Operator
+                          key expressions: _col0 (type: int), _col1 (type: int)
+                          sort order: ++
+                          Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                          Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+        Reducer 2 
+            Reduce Operator Tree:
+              Group By Operator
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                Select Operator
+                  expressions: _col0 (type: int), _col1 (type: int)
+                  outputColumnNames: _col0, _col1
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  File Output Operator
+                    compressed: false
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    table:
+                        input format: org.apache.hadoop.mapred.TextInputFormat
+                        output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
+                        serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+
+  Stage: Stage-0
+    Fetch Operator
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: EXPLAIN select DISTINCT key, value FROM tbl WHERE value = key
+PREHOOK: type: QUERY
+POSTHOOK: query: EXPLAIN select DISTINCT key, value FROM tbl WHERE value = key
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Spark
+      Edges:
+        Reducer 2 <- Map 1 (GROUP, 4)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: tbl
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  Filter Operator
+                    predicate: (value = key) (type: boolean)
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Group By Operator
+                      keys: key (type: int), value (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+        Reducer 2 
+            Reduce Operator Tree:
+              Group By Operator
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                Select Operator
+                  expressions: _col0 (type: int), _col1 (type: int)
+                  outputColumnNames: _col0, _col1
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  File Output Operator
+                    compressed: false
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    table:
+                        input format: org.apache.hadoop.mapred.TextInputFormat
+                        output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
+                        serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+
+  Stage: Stage-0
+    Fetch Operator
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: EXPLAIN select DISTINCT key, substr(value,2,3) FROM tbl WHERE value = key
+PREHOOK: type: QUERY
+POSTHOOK: query: EXPLAIN select DISTINCT key, substr(value,2,3) FROM tbl WHERE value = key
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Spark
+      Edges:
+        Reducer 2 <- Map 1 (GROUP, 4)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: tbl
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  Filter Operator
+                    predicate: (value = key) (type: boolean)
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Group By Operator
+                      keys: key (type: int), substr(value, 2, 3) (type: string)
+                      mode: hash
+                      outputColumnNames: _col0, _col1
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: string)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: string)
+                        Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+        Reducer 2 
+            Reduce Operator Tree:
+              Group By Operator
+                keys: KEY._col0 (type: int), KEY._col1 (type: string)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                Select Operator
+                  expressions: _col0 (type: int), _col1 (type: string)
+                  outputColumnNames: _col0, _col1
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  File Output Operator
+                    compressed: false
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    table:
+                        input format: org.apache.hadoop.mapred.TextInputFormat
+                        output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
+                        serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+
+  Stage: Stage-0
+    Fetch Operator
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: EXPLAIN select DISTINCT key, substr(value,2,3) FROM tbl
+PREHOOK: type: QUERY
+POSTHOOK: query: EXPLAIN select DISTINCT key, substr(value,2,3) FROM tbl
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:

[... 593 lines stripped ...]


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