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From xu...@apache.org
Subject svn commit: r1634671 [32/46] - in /hive/branches/spark: itests/src/test/resources/ ql/src/test/results/clientpositive/spark/
Date Mon, 27 Oct 2014 19:57:03 GMT
Added: hive/branches/spark/ql/src/test/results/clientpositive/spark/skewjoin_noskew.q.out
URL: http://svn.apache.org/viewvc/hive/branches/spark/ql/src/test/results/clientpositive/spark/skewjoin_noskew.q.out?rev=1634671&view=auto
==============================================================================
--- hive/branches/spark/ql/src/test/results/clientpositive/spark/skewjoin_noskew.q.out (added)
+++ hive/branches/spark/ql/src/test/results/clientpositive/spark/skewjoin_noskew.q.out Mon Oct 27 19:56:58 2014
@@ -0,0 +1,155 @@
+PREHOOK: query: explain
+create table noskew as select a.* from src a join src b on a.key=b.key order by a.key limit 30
+PREHOOK: type: CREATETABLE_AS_SELECT
+POSTHOOK: query: explain
+create table noskew as select a.* from src a join src b on a.key=b.key order by a.key limit 30
+POSTHOOK: type: CREATETABLE_AS_SELECT
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-2 depends on stages: Stage-1
+  Stage-4 depends on stages: Stage-2, Stage-0
+  Stage-3 depends on stages: Stage-4
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Spark
+      Edges:
+        Reducer 2 <- Map 1 (GROUP PARTITION-LEVEL SORT, 1), Map 4 (GROUP PARTITION-LEVEL SORT, 1)
+        Reducer 3 <- Reducer 2 (GROUP SORT, 1)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
+                  Filter Operator
+                    predicate: key is not null (type: boolean)
+                    Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: key (type: string)
+                      sort order: +
+                      Map-reduce partition columns: key (type: string)
+                      Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+        Map 4 
+            Map Operator Tree:
+                TableScan
+                  alias: a
+                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
+                  Filter Operator
+                    predicate: key is not null (type: boolean)
+                    Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: key (type: string)
+                      sort order: +
+                      Map-reduce partition columns: key (type: string)
+                      Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+                      value expressions: value (type: string)
+        Reducer 2 
+            Reduce Operator Tree:
+              Join Operator
+                condition map:
+                     Inner Join 0 to 1
+                condition expressions:
+                  0 {KEY.reducesinkkey0} {VALUE._col0}
+                  1 
+                outputColumnNames: _col0, _col1
+                Statistics: Num rows: 275 Data size: 2921 Basic stats: COMPLETE Column stats: NONE
+                Select Operator
+                  expressions: _col0 (type: string), _col1 (type: string)
+                  outputColumnNames: _col0, _col1
+                  Statistics: Num rows: 275 Data size: 2921 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: _col0 (type: string)
+                    sort order: +
+                    Statistics: Num rows: 275 Data size: 2921 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col1 (type: string)
+        Reducer 3 
+            Reduce Operator Tree:
+              Select Operator
+                expressions: KEY.reducesinkkey0 (type: string), VALUE._col0 (type: string)
+                outputColumnNames: _col0, _col1
+                Statistics: Num rows: 275 Data size: 2921 Basic stats: COMPLETE Column stats: NONE
+                Limit
+                  Number of rows: 30
+                  Statistics: Num rows: 30 Data size: 300 Basic stats: COMPLETE Column stats: NONE
+                  File Output Operator
+                    compressed: false
+                    Statistics: Num rows: 30 Data size: 300 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
+                        name: default.noskew
+
+  Stage: Stage-2
+    Dependency Collection
+
+  Stage: Stage-4
+      Create Table Operator:
+        Create Table
+          columns: key string, value string
+          input format: org.apache.hadoop.mapred.TextInputFormat
+          output format: org.apache.hadoop.hive.ql.io.IgnoreKeyTextOutputFormat
+          serde name: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+          name: default.noskew
+
+  Stage: Stage-3
+    Stats-Aggr Operator
+
+  Stage: Stage-0
+    Move Operator
+      files:
+          hdfs directory: true
+#### A masked pattern was here ####
+
+PREHOOK: query: create table noskew as select a.* from src a join src b on a.key=b.key order by a.key limit 30
+PREHOOK: type: CREATETABLE_AS_SELECT
+PREHOOK: Input: default@src
+PREHOOK: Output: database:default
+PREHOOK: Output: default@noskew
+[Error 30017]: Skipping stats aggregation by error org.apache.hadoop.hive.ql.metadata.HiveException: [Error 30015]: Stats aggregator of type counter cannot be connected to
+POSTHOOK: query: create table noskew as select a.* from src a join src b on a.key=b.key order by a.key limit 30
+POSTHOOK: type: CREATETABLE_AS_SELECT
+POSTHOOK: Input: default@src
+POSTHOOK: Output: database:default
+POSTHOOK: Output: default@noskew
+PREHOOK: query: select * from noskew
+PREHOOK: type: QUERY
+PREHOOK: Input: default@noskew
+#### A masked pattern was here ####
+POSTHOOK: query: select * from noskew
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@noskew
+#### A masked pattern was here ####
+0	val_0
+0	val_0
+0	val_0
+0	val_0
+0	val_0
+0	val_0
+0	val_0
+0	val_0
+0	val_0
+10	val_10
+100	val_100
+100	val_100
+100	val_100
+100	val_100
+103	val_103
+103	val_103
+103	val_103
+103	val_103
+104	val_104
+104	val_104
+104	val_104
+104	val_104
+105	val_105
+11	val_11
+111	val_111
+113	val_113
+113	val_113
+113	val_113
+113	val_113
+114	val_114

Added: hive/branches/spark/ql/src/test/results/clientpositive/spark/skewjoin_union_remove_1.q.out
URL: http://svn.apache.org/viewvc/hive/branches/spark/ql/src/test/results/clientpositive/spark/skewjoin_union_remove_1.q.out?rev=1634671&view=auto
==============================================================================
--- hive/branches/spark/ql/src/test/results/clientpositive/spark/skewjoin_union_remove_1.q.out (added)
+++ hive/branches/spark/ql/src/test/results/clientpositive/spark/skewjoin_union_remove_1.q.out Mon Oct 27 19:56:58 2014
@@ -0,0 +1,474 @@
+PREHOOK: query: -- This is to test the union->selectstar->filesink and skewjoin optimization
+-- Union of 2 map-reduce subqueries is performed for the skew join
+-- There is no need to write the temporary results of the sub-queries, and then read them 
+-- again to process the union. The union can be removed completely.
+-- INCLUDE_HADOOP_MAJOR_VERSIONS(0.23)
+-- Since this test creates sub-directories for the output, it might be easier to run the test
+-- only on hadoop 23
+
+CREATE TABLE T1(key STRING, val STRING)
+SKEWED BY (key) ON ((2)) STORED AS TEXTFILE
+PREHOOK: type: CREATETABLE
+PREHOOK: Output: database:default
+PREHOOK: Output: default@T1
+POSTHOOK: query: -- This is to test the union->selectstar->filesink and skewjoin optimization
+-- Union of 2 map-reduce subqueries is performed for the skew join
+-- There is no need to write the temporary results of the sub-queries, and then read them 
+-- again to process the union. The union can be removed completely.
+-- INCLUDE_HADOOP_MAJOR_VERSIONS(0.23)
+-- Since this test creates sub-directories for the output, it might be easier to run the test
+-- only on hadoop 23
+
+CREATE TABLE T1(key STRING, val STRING)
+SKEWED BY (key) ON ((2)) STORED AS TEXTFILE
+POSTHOOK: type: CREATETABLE
+POSTHOOK: Output: database:default
+POSTHOOK: Output: default@T1
+PREHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T1.txt' INTO TABLE T1
+PREHOOK: type: LOAD
+#### A masked pattern was here ####
+PREHOOK: Output: default@t1
+POSTHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T1.txt' INTO TABLE T1
+POSTHOOK: type: LOAD
+#### A masked pattern was here ####
+POSTHOOK: Output: default@t1
+PREHOOK: query: CREATE TABLE T2(key STRING, val STRING)
+SKEWED BY (key) ON ((3)) STORED AS TEXTFILE
+PREHOOK: type: CREATETABLE
+PREHOOK: Output: database:default
+PREHOOK: Output: default@T2
+POSTHOOK: query: CREATE TABLE T2(key STRING, val STRING)
+SKEWED BY (key) ON ((3)) STORED AS TEXTFILE
+POSTHOOK: type: CREATETABLE
+POSTHOOK: Output: database:default
+POSTHOOK: Output: default@T2
+PREHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T2.txt' INTO TABLE T2
+PREHOOK: type: LOAD
+#### A masked pattern was here ####
+PREHOOK: Output: default@t2
+POSTHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T2.txt' INTO TABLE T2
+POSTHOOK: type: LOAD
+#### A masked pattern was here ####
+POSTHOOK: Output: default@t2
+PREHOOK: query: -- a simple join query with skew on both the tables on the join key
+
+EXPLAIN
+SELECT * FROM T1 a JOIN T2 b ON a.key = b.key
+PREHOOK: type: QUERY
+POSTHOOK: query: -- a simple join query with skew on both the tables on the join key
+
+EXPLAIN
+SELECT * FROM T1 a JOIN T2 b ON a.key = b.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 PARTITION-LEVEL SORT, 1), Map 3 (GROUP PARTITION-LEVEL SORT, 1)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+                  Filter Operator
+                    predicate: key is not null (type: boolean)
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: key (type: string)
+                      sort order: +
+                      Map-reduce partition columns: key (type: string)
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      value expressions: val (type: string)
+        Map 3 
+            Map Operator Tree:
+                TableScan
+                  alias: a
+                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+                  Filter Operator
+                    predicate: key is not null (type: boolean)
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: key (type: string)
+                      sort order: +
+                      Map-reduce partition columns: key (type: string)
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      value expressions: val (type: string)
+        Reducer 2 
+            Reduce Operator Tree:
+              Join Operator
+                condition map:
+                     Inner Join 0 to 1
+                condition expressions:
+                  0 {KEY.reducesinkkey0} {VALUE._col0}
+                  1 {KEY.reducesinkkey0} {VALUE._col0}
+                outputColumnNames: _col0, _col1, _col5, _col6
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                Select Operator
+                  expressions: _col0 (type: string), _col1 (type: string), _col5 (type: string), _col6 (type: string)
+                  outputColumnNames: _col0, _col1, _col2, _col3
+                  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: SELECT * FROM T1 a JOIN T2 b ON a.key = b.key
+ORDER BY a.key, b.key, a.val, b.val
+PREHOOK: type: QUERY
+PREHOOK: Input: default@t1
+PREHOOK: Input: default@t2
+#### A masked pattern was here ####
+POSTHOOK: query: SELECT * FROM T1 a JOIN T2 b ON a.key = b.key
+ORDER BY a.key, b.key, a.val, b.val
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@t1
+POSTHOOK: Input: default@t2
+#### A masked pattern was here ####
+2	12	2	22
+3	13	3	13
+8	18	8	18
+8	18	8	18
+8	28	8	18
+8	28	8	18
+PREHOOK: query: -- test outer joins also
+
+EXPLAIN
+SELECT a.*, b.* FROM T1 a RIGHT OUTER JOIN T2 b ON a.key = b.key
+PREHOOK: type: QUERY
+POSTHOOK: query: -- test outer joins also
+
+EXPLAIN
+SELECT a.*, b.* FROM T1 a RIGHT OUTER JOIN T2 b ON a.key = b.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 PARTITION-LEVEL SORT, 1), Map 3 (GROUP PARTITION-LEVEL SORT, 1)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: key (type: string)
+                    sort order: +
+                    Map-reduce partition columns: key (type: string)
+                    Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+                    value expressions: val (type: string)
+        Map 3 
+            Map Operator Tree:
+                TableScan
+                  alias: a
+                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: key (type: string)
+                    sort order: +
+                    Map-reduce partition columns: key (type: string)
+                    Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+                    value expressions: val (type: string)
+        Reducer 2 
+            Reduce Operator Tree:
+              Join Operator
+                condition map:
+                     Right Outer Join0 to 1
+                condition expressions:
+                  0 {KEY.reducesinkkey0} {VALUE._col0}
+                  1 {KEY.reducesinkkey0} {VALUE._col0}
+                outputColumnNames: _col0, _col1, _col5, _col6
+                Statistics: Num rows: 0 Data size: 33 Basic stats: PARTIAL Column stats: NONE
+                Select Operator
+                  expressions: _col0 (type: string), _col1 (type: string), _col5 (type: string), _col6 (type: string)
+                  outputColumnNames: _col0, _col1, _col2, _col3
+                  Statistics: Num rows: 0 Data size: 33 Basic stats: PARTIAL Column stats: NONE
+                  File Output Operator
+                    compressed: false
+                    Statistics: Num rows: 0 Data size: 33 Basic stats: PARTIAL 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 a.*, b.* FROM T1 a RIGHT OUTER JOIN T2 b ON a.key = b.key
+ORDER BY a.key, b.key, a.val, b.val
+PREHOOK: type: QUERY
+PREHOOK: Input: default@t1
+PREHOOK: Input: default@t2
+#### A masked pattern was here ####
+POSTHOOK: query: SELECT a.*, b.* FROM T1 a RIGHT OUTER JOIN T2 b ON a.key = b.key
+ORDER BY a.key, b.key, a.val, b.val
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@t1
+POSTHOOK: Input: default@t2
+#### A masked pattern was here ####
+NULL	NULL	4	14
+NULL	NULL	5	15
+2	12	2	22
+3	13	3	13
+8	18	8	18
+8	18	8	18
+8	28	8	18
+8	28	8	18
+PREHOOK: query: create table DEST1(key1 STRING, val1 STRING, key2 STRING, val2 STRING)
+PREHOOK: type: CREATETABLE
+PREHOOK: Output: database:default
+PREHOOK: Output: default@DEST1
+POSTHOOK: query: create table DEST1(key1 STRING, val1 STRING, key2 STRING, val2 STRING)
+POSTHOOK: type: CREATETABLE
+POSTHOOK: Output: database:default
+POSTHOOK: Output: default@DEST1
+PREHOOK: query: EXPLAIN
+INSERT OVERWRITE TABLE DEST1
+SELECT * FROM T1 a JOIN T2 b ON a.key = b.key
+PREHOOK: type: QUERY
+POSTHOOK: query: EXPLAIN
+INSERT OVERWRITE TABLE DEST1
+SELECT * FROM T1 a JOIN T2 b ON a.key = b.key
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-2 depends on stages: Stage-1
+  Stage-0 depends on stages: Stage-2
+
+STAGE PLANS:
+  Stage: Stage-1
+    Spark
+      Edges:
+        Reducer 2 <- Map 1 (GROUP PARTITION-LEVEL SORT, 1), Map 3 (GROUP PARTITION-LEVEL SORT, 1)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+                  Filter Operator
+                    predicate: key is not null (type: boolean)
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: key (type: string)
+                      sort order: +
+                      Map-reduce partition columns: key (type: string)
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      value expressions: val (type: string)
+        Map 3 
+            Map Operator Tree:
+                TableScan
+                  alias: a
+                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+                  Filter Operator
+                    predicate: key is not null (type: boolean)
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: key (type: string)
+                      sort order: +
+                      Map-reduce partition columns: key (type: string)
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      value expressions: val (type: string)
+        Reducer 2 
+            Reduce Operator Tree:
+              Join Operator
+                condition map:
+                     Inner Join 0 to 1
+                condition expressions:
+                  0 {KEY.reducesinkkey0} {VALUE._col0}
+                  1 {KEY.reducesinkkey0} {VALUE._col0}
+                outputColumnNames: _col0, _col1, _col5, _col6
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                Select Operator
+                  expressions: _col0 (type: string), _col1 (type: string), _col5 (type: string), _col6 (type: string)
+                  outputColumnNames: _col0, _col1, _col2, _col3
+                  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
+                        name: default.dest1
+
+  Stage: Stage-2
+    Dependency Collection
+
+  Stage: Stage-0
+    Move Operator
+      tables:
+          replace: true
+          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
+              name: default.dest1
+
+PREHOOK: query: INSERT OVERWRITE TABLE DEST1
+SELECT * FROM T1 a JOIN T2 b ON a.key = b.key
+PREHOOK: type: QUERY
+PREHOOK: Input: default@t1
+PREHOOK: Input: default@t2
+PREHOOK: Output: default@dest1
+POSTHOOK: query: INSERT OVERWRITE TABLE DEST1
+SELECT * FROM T1 a JOIN T2 b ON a.key = b.key
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@t1
+POSTHOOK: Input: default@t2
+POSTHOOK: Output: default@dest1
+POSTHOOK: Lineage: dest1.key1 SIMPLE [(t1)a.FieldSchema(name:key, type:string, comment:null), ]
+POSTHOOK: Lineage: dest1.key2 SIMPLE [(t2)b.FieldSchema(name:key, type:string, comment:null), ]
+POSTHOOK: Lineage: dest1.val1 SIMPLE [(t1)a.FieldSchema(name:val, type:string, comment:null), ]
+POSTHOOK: Lineage: dest1.val2 SIMPLE [(t2)b.FieldSchema(name:val, type:string, comment:null), ]
+PREHOOK: query: SELECT * FROM DEST1
+ORDER BY key1, key2, val1, val2
+PREHOOK: type: QUERY
+PREHOOK: Input: default@dest1
+#### A masked pattern was here ####
+POSTHOOK: query: SELECT * FROM DEST1
+ORDER BY key1, key2, val1, val2
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@dest1
+#### A masked pattern was here ####
+2	12	2	22
+3	13	3	13
+8	18	8	18
+8	18	8	18
+8	28	8	18
+8	28	8	18
+PREHOOK: query: EXPLAIN
+INSERT OVERWRITE TABLE DEST1
+SELECT * FROM T1 a RIGHT OUTER JOIN T2 b ON a.key = b.key
+PREHOOK: type: QUERY
+POSTHOOK: query: EXPLAIN
+INSERT OVERWRITE TABLE DEST1
+SELECT * FROM T1 a RIGHT OUTER JOIN T2 b ON a.key = b.key
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-2 depends on stages: Stage-1
+  Stage-0 depends on stages: Stage-2
+
+STAGE PLANS:
+  Stage: Stage-1
+    Spark
+      Edges:
+        Reducer 2 <- Map 1 (GROUP PARTITION-LEVEL SORT, 1), Map 3 (GROUP PARTITION-LEVEL SORT, 1)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: key (type: string)
+                    sort order: +
+                    Map-reduce partition columns: key (type: string)
+                    Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+                    value expressions: val (type: string)
+        Map 3 
+            Map Operator Tree:
+                TableScan
+                  alias: a
+                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: key (type: string)
+                    sort order: +
+                    Map-reduce partition columns: key (type: string)
+                    Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+                    value expressions: val (type: string)
+        Reducer 2 
+            Reduce Operator Tree:
+              Join Operator
+                condition map:
+                     Right Outer Join0 to 1
+                condition expressions:
+                  0 {KEY.reducesinkkey0} {VALUE._col0}
+                  1 {KEY.reducesinkkey0} {VALUE._col0}
+                outputColumnNames: _col0, _col1, _col5, _col6
+                Statistics: Num rows: 0 Data size: 33 Basic stats: PARTIAL Column stats: NONE
+                Select Operator
+                  expressions: _col0 (type: string), _col1 (type: string), _col5 (type: string), _col6 (type: string)
+                  outputColumnNames: _col0, _col1, _col2, _col3
+                  Statistics: Num rows: 0 Data size: 33 Basic stats: PARTIAL Column stats: NONE
+                  File Output Operator
+                    compressed: false
+                    Statistics: Num rows: 0 Data size: 33 Basic stats: PARTIAL 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
+                        name: default.dest1
+
+  Stage: Stage-2
+    Dependency Collection
+
+  Stage: Stage-0
+    Move Operator
+      tables:
+          replace: true
+          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
+              name: default.dest1
+
+PREHOOK: query: INSERT OVERWRITE TABLE DEST1
+SELECT * FROM T1 a RIGHT OUTER JOIN T2 b ON a.key = b.key
+PREHOOK: type: QUERY
+PREHOOK: Input: default@t1
+PREHOOK: Input: default@t2
+PREHOOK: Output: default@dest1
+POSTHOOK: query: INSERT OVERWRITE TABLE DEST1
+SELECT * FROM T1 a RIGHT OUTER JOIN T2 b ON a.key = b.key
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@t1
+POSTHOOK: Input: default@t2
+POSTHOOK: Output: default@dest1
+POSTHOOK: Lineage: dest1.key1 SIMPLE [(t1)a.FieldSchema(name:key, type:string, comment:null), ]
+POSTHOOK: Lineage: dest1.key2 SIMPLE [(t2)b.FieldSchema(name:key, type:string, comment:null), ]
+POSTHOOK: Lineage: dest1.val1 SIMPLE [(t1)a.FieldSchema(name:val, type:string, comment:null), ]
+POSTHOOK: Lineage: dest1.val2 SIMPLE [(t2)b.FieldSchema(name:val, type:string, comment:null), ]
+PREHOOK: query: SELECT * FROM DEST1
+ORDER BY key1, key2, val1, val2
+PREHOOK: type: QUERY
+PREHOOK: Input: default@dest1
+#### A masked pattern was here ####
+POSTHOOK: query: SELECT * FROM DEST1
+ORDER BY key1, key2, val1, val2
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@dest1
+#### A masked pattern was here ####
+NULL	NULL	4	14
+NULL	NULL	5	15
+2	12	2	22
+3	13	3	13
+8	18	8	18
+8	18	8	18
+8	28	8	18
+8	28	8	18

Added: hive/branches/spark/ql/src/test/results/clientpositive/spark/skewjoin_union_remove_2.q.out
URL: http://svn.apache.org/viewvc/hive/branches/spark/ql/src/test/results/clientpositive/spark/skewjoin_union_remove_2.q.out?rev=1634671&view=auto
==============================================================================
--- hive/branches/spark/ql/src/test/results/clientpositive/spark/skewjoin_union_remove_2.q.out (added)
+++ hive/branches/spark/ql/src/test/results/clientpositive/spark/skewjoin_union_remove_2.q.out Mon Oct 27 19:56:58 2014
@@ -0,0 +1,172 @@
+PREHOOK: query: CREATE TABLE T1(key STRING, val STRING)
+SKEWED BY (key) ON ((2), (8)) STORED AS TEXTFILE
+PREHOOK: type: CREATETABLE
+PREHOOK: Output: database:default
+PREHOOK: Output: default@T1
+POSTHOOK: query: CREATE TABLE T1(key STRING, val STRING)
+SKEWED BY (key) ON ((2), (8)) STORED AS TEXTFILE
+POSTHOOK: type: CREATETABLE
+POSTHOOK: Output: database:default
+POSTHOOK: Output: default@T1
+PREHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T1.txt' INTO TABLE T1
+PREHOOK: type: LOAD
+#### A masked pattern was here ####
+PREHOOK: Output: default@t1
+POSTHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T1.txt' INTO TABLE T1
+POSTHOOK: type: LOAD
+#### A masked pattern was here ####
+POSTHOOK: Output: default@t1
+PREHOOK: query: CREATE TABLE T2(key STRING, val STRING)
+SKEWED BY (key) ON ((3), (8)) STORED AS TEXTFILE
+PREHOOK: type: CREATETABLE
+PREHOOK: Output: database:default
+PREHOOK: Output: default@T2
+POSTHOOK: query: CREATE TABLE T2(key STRING, val STRING)
+SKEWED BY (key) ON ((3), (8)) STORED AS TEXTFILE
+POSTHOOK: type: CREATETABLE
+POSTHOOK: Output: database:default
+POSTHOOK: Output: default@T2
+PREHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T2.txt' INTO TABLE T2
+PREHOOK: type: LOAD
+#### A masked pattern was here ####
+PREHOOK: Output: default@t2
+POSTHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T2.txt' INTO TABLE T2
+POSTHOOK: type: LOAD
+#### A masked pattern was here ####
+POSTHOOK: Output: default@t2
+PREHOOK: query: CREATE TABLE T3(key STRING, val STRING) STORED AS TEXTFILE
+PREHOOK: type: CREATETABLE
+PREHOOK: Output: database:default
+PREHOOK: Output: default@T3
+POSTHOOK: query: CREATE TABLE T3(key STRING, val STRING) STORED AS TEXTFILE
+POSTHOOK: type: CREATETABLE
+POSTHOOK: Output: database:default
+POSTHOOK: Output: default@T3
+PREHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T3.txt' INTO TABLE T3
+PREHOOK: type: LOAD
+#### A masked pattern was here ####
+PREHOOK: Output: default@t3
+POSTHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T3.txt' INTO TABLE T3
+POSTHOOK: type: LOAD
+#### A masked pattern was here ####
+POSTHOOK: Output: default@t3
+PREHOOK: query: -- This is to test the union->selectstar->filesink and skewjoin optimization
+-- Union of 3 map-reduce subqueries is performed for the skew join
+-- There is no need to write the temporary results of the sub-queries, and then read them 
+-- again to process the union. The union can be removed completely.
+-- INCLUDE_HADOOP_MAJOR_VERSIONS(0.23)
+-- Since this test creates sub-directories for the output table, it might be easier
+-- to run the test only on hadoop 23
+
+EXPLAIN
+SELECT a.*, b.*, c.* FROM T1 a JOIN T2 b ON a.key = b.key JOIN T3 c on a.key = c.key
+PREHOOK: type: QUERY
+POSTHOOK: query: -- This is to test the union->selectstar->filesink and skewjoin optimization
+-- Union of 3 map-reduce subqueries is performed for the skew join
+-- There is no need to write the temporary results of the sub-queries, and then read them 
+-- again to process the union. The union can be removed completely.
+-- INCLUDE_HADOOP_MAJOR_VERSIONS(0.23)
+-- Since this test creates sub-directories for the output table, it might be easier
+-- to run the test only on hadoop 23
+
+EXPLAIN
+SELECT a.*, b.*, c.* FROM T1 a JOIN T2 b ON a.key = b.key JOIN T3 c on a.key = c.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 PARTITION-LEVEL SORT, 1), Map 3 (GROUP PARTITION-LEVEL SORT, 1), Map 4 (GROUP PARTITION-LEVEL SORT, 1)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+                  Filter Operator
+                    predicate: key is not null (type: boolean)
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: key (type: string)
+                      sort order: +
+                      Map-reduce partition columns: key (type: string)
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      value expressions: val (type: string)
+        Map 3 
+            Map Operator Tree:
+                TableScan
+                  alias: c
+                  Statistics: Num rows: 0 Data size: 20 Basic stats: PARTIAL Column stats: NONE
+                  Filter Operator
+                    predicate: key is not null (type: boolean)
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: key (type: string)
+                      sort order: +
+                      Map-reduce partition columns: key (type: string)
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      value expressions: val (type: string)
+        Map 4 
+            Map Operator Tree:
+                TableScan
+                  alias: a
+                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+                  Filter Operator
+                    predicate: key is not null (type: boolean)
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: key (type: string)
+                      sort order: +
+                      Map-reduce partition columns: key (type: string)
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      value expressions: val (type: string)
+        Reducer 2 
+            Reduce Operator Tree:
+              Join Operator
+                condition map:
+                     Inner Join 0 to 1
+                     Inner Join 0 to 2
+                condition expressions:
+                  0 {KEY.reducesinkkey0} {VALUE._col0}
+                  1 {KEY.reducesinkkey0} {VALUE._col0}
+                  2 {KEY.reducesinkkey0} {VALUE._col0}
+                outputColumnNames: _col0, _col1, _col5, _col6, _col10, _col11
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                Select Operator
+                  expressions: _col0 (type: string), _col1 (type: string), _col5 (type: string), _col6 (type: string), _col10 (type: string), _col11 (type: string)
+                  outputColumnNames: _col0, _col1, _col2, _col3, _col4, _col5
+                  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: SELECT a.*, b.*, c.* FROM T1 a JOIN T2 b ON a.key = b.key JOIN T3 c on a.key = c.key
+ORDER BY a.key, b.key, c.key, a.val, b.val, c.val
+PREHOOK: type: QUERY
+PREHOOK: Input: default@t1
+PREHOOK: Input: default@t2
+PREHOOK: Input: default@t3
+#### A masked pattern was here ####
+POSTHOOK: query: SELECT a.*, b.*, c.* FROM T1 a JOIN T2 b ON a.key = b.key JOIN T3 c on a.key = c.key
+ORDER BY a.key, b.key, c.key, a.val, b.val, c.val
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@t1
+POSTHOOK: Input: default@t2
+POSTHOOK: Input: default@t3
+#### A masked pattern was here ####
+2	12	2	22	2	12

Added: hive/branches/spark/ql/src/test/results/clientpositive/spark/skewjoinopt1.q.out
URL: http://svn.apache.org/viewvc/hive/branches/spark/ql/src/test/results/clientpositive/spark/skewjoinopt1.q.out?rev=1634671&view=auto
==============================================================================
--- hive/branches/spark/ql/src/test/results/clientpositive/spark/skewjoinopt1.q.out (added)
+++ hive/branches/spark/ql/src/test/results/clientpositive/spark/skewjoinopt1.q.out Mon Oct 27 19:56:58 2014
@@ -0,0 +1,422 @@
+PREHOOK: query: CREATE TABLE T1(key STRING, val STRING)
+SKEWED BY (key) ON ((2)) STORED AS TEXTFILE
+PREHOOK: type: CREATETABLE
+PREHOOK: Output: database:default
+PREHOOK: Output: default@T1
+POSTHOOK: query: CREATE TABLE T1(key STRING, val STRING)
+SKEWED BY (key) ON ((2)) STORED AS TEXTFILE
+POSTHOOK: type: CREATETABLE
+POSTHOOK: Output: database:default
+POSTHOOK: Output: default@T1
+PREHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T1.txt' INTO TABLE T1
+PREHOOK: type: LOAD
+#### A masked pattern was here ####
+PREHOOK: Output: default@t1
+POSTHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T1.txt' INTO TABLE T1
+POSTHOOK: type: LOAD
+#### A masked pattern was here ####
+POSTHOOK: Output: default@t1
+PREHOOK: query: CREATE TABLE T2(key STRING, val STRING)
+SKEWED BY (key) ON ((3)) STORED AS TEXTFILE
+PREHOOK: type: CREATETABLE
+PREHOOK: Output: database:default
+PREHOOK: Output: default@T2
+POSTHOOK: query: CREATE TABLE T2(key STRING, val STRING)
+SKEWED BY (key) ON ((3)) STORED AS TEXTFILE
+POSTHOOK: type: CREATETABLE
+POSTHOOK: Output: database:default
+POSTHOOK: Output: default@T2
+PREHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T2.txt' INTO TABLE T2
+PREHOOK: type: LOAD
+#### A masked pattern was here ####
+PREHOOK: Output: default@t2
+POSTHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T2.txt' INTO TABLE T2
+POSTHOOK: type: LOAD
+#### A masked pattern was here ####
+POSTHOOK: Output: default@t2
+PREHOOK: query: -- a simple join query with skew on both the tables on the join key
+-- adding a order by at the end to make the results deterministic
+
+EXPLAIN
+SELECT a.*, b.* FROM T1 a JOIN T2 b ON a.key = b.key
+PREHOOK: type: QUERY
+POSTHOOK: query: -- a simple join query with skew on both the tables on the join key
+-- adding a order by at the end to make the results deterministic
+
+EXPLAIN
+SELECT a.*, b.* FROM T1 a JOIN T2 b ON a.key = b.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 PARTITION-LEVEL SORT, 1), Map 3 (GROUP PARTITION-LEVEL SORT, 1)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+                  Filter Operator
+                    predicate: key is not null (type: boolean)
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: key (type: string)
+                      sort order: +
+                      Map-reduce partition columns: key (type: string)
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      value expressions: val (type: string)
+        Map 3 
+            Map Operator Tree:
+                TableScan
+                  alias: a
+                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+                  Filter Operator
+                    predicate: key is not null (type: boolean)
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: key (type: string)
+                      sort order: +
+                      Map-reduce partition columns: key (type: string)
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      value expressions: val (type: string)
+        Reducer 2 
+            Reduce Operator Tree:
+              Join Operator
+                condition map:
+                     Inner Join 0 to 1
+                condition expressions:
+                  0 {KEY.reducesinkkey0} {VALUE._col0}
+                  1 {KEY.reducesinkkey0} {VALUE._col0}
+                outputColumnNames: _col0, _col1, _col5, _col6
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                Select Operator
+                  expressions: _col0 (type: string), _col1 (type: string), _col5 (type: string), _col6 (type: string)
+                  outputColumnNames: _col0, _col1, _col2, _col3
+                  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: SELECT a.*, b.* FROM T1 a JOIN T2 b ON a.key = b.key
+ORDER BY a.key, b.key, a.val, b.val
+PREHOOK: type: QUERY
+PREHOOK: Input: default@t1
+PREHOOK: Input: default@t2
+#### A masked pattern was here ####
+POSTHOOK: query: SELECT a.*, b.* FROM T1 a JOIN T2 b ON a.key = b.key
+ORDER BY a.key, b.key, a.val, b.val
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@t1
+POSTHOOK: Input: default@t2
+#### A masked pattern was here ####
+2	12	2	22
+3	13	3	13
+8	18	8	18
+8	18	8	18
+8	28	8	18
+8	28	8	18
+PREHOOK: query: -- test outer joins also
+
+EXPLAIN
+SELECT a.*, b.* FROM T1 a RIGHT OUTER JOIN T2 b ON a.key = b.key
+PREHOOK: type: QUERY
+POSTHOOK: query: -- test outer joins also
+
+EXPLAIN
+SELECT a.*, b.* FROM T1 a RIGHT OUTER JOIN T2 b ON a.key = b.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 PARTITION-LEVEL SORT, 1), Map 3 (GROUP PARTITION-LEVEL SORT, 1)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: key (type: string)
+                    sort order: +
+                    Map-reduce partition columns: key (type: string)
+                    Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+                    value expressions: val (type: string)
+        Map 3 
+            Map Operator Tree:
+                TableScan
+                  alias: a
+                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: key (type: string)
+                    sort order: +
+                    Map-reduce partition columns: key (type: string)
+                    Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+                    value expressions: val (type: string)
+        Reducer 2 
+            Reduce Operator Tree:
+              Join Operator
+                condition map:
+                     Right Outer Join0 to 1
+                condition expressions:
+                  0 {KEY.reducesinkkey0} {VALUE._col0}
+                  1 {KEY.reducesinkkey0} {VALUE._col0}
+                outputColumnNames: _col0, _col1, _col5, _col6
+                Statistics: Num rows: 0 Data size: 33 Basic stats: PARTIAL Column stats: NONE
+                Select Operator
+                  expressions: _col0 (type: string), _col1 (type: string), _col5 (type: string), _col6 (type: string)
+                  outputColumnNames: _col0, _col1, _col2, _col3
+                  Statistics: Num rows: 0 Data size: 33 Basic stats: PARTIAL Column stats: NONE
+                  File Output Operator
+                    compressed: false
+                    Statistics: Num rows: 0 Data size: 33 Basic stats: PARTIAL 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 a.*, b.* FROM T1 a RIGHT OUTER JOIN T2 b ON a.key = b.key
+ORDER BY a.key, b.key, a.val, b.val
+PREHOOK: type: QUERY
+PREHOOK: Input: default@t1
+PREHOOK: Input: default@t2
+#### A masked pattern was here ####
+POSTHOOK: query: SELECT a.*, b.* FROM T1 a RIGHT OUTER JOIN T2 b ON a.key = b.key
+ORDER BY a.key, b.key, a.val, b.val
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@t1
+POSTHOOK: Input: default@t2
+#### A masked pattern was here ####
+NULL	NULL	4	14
+NULL	NULL	5	15
+2	12	2	22
+3	13	3	13
+8	18	8	18
+8	18	8	18
+8	28	8	18
+8	28	8	18
+PREHOOK: query: -- an aggregation at the end should not change anything
+
+EXPLAIN
+SELECT count(1) FROM T1 a JOIN T2 b ON a.key = b.key
+PREHOOK: type: QUERY
+POSTHOOK: query: -- an aggregation at the end should not change anything
+
+EXPLAIN
+SELECT count(1) FROM T1 a JOIN T2 b ON a.key = b.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 PARTITION-LEVEL SORT, 1), Map 4 (GROUP PARTITION-LEVEL SORT, 1)
+        Reducer 3 <- Reducer 2 (GROUP, 1)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+                  Filter Operator
+                    predicate: key is not null (type: boolean)
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: key (type: string)
+                      sort order: +
+                      Map-reduce partition columns: key (type: string)
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+        Map 4 
+            Map Operator Tree:
+                TableScan
+                  alias: a
+                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+                  Filter Operator
+                    predicate: key is not null (type: boolean)
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: key (type: string)
+                      sort order: +
+                      Map-reduce partition columns: key (type: string)
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+        Reducer 2 
+            Reduce Operator Tree:
+              Join Operator
+                condition map:
+                     Inner Join 0 to 1
+                condition expressions:
+                  0 
+                  1 
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                Select Operator
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  Group By Operator
+                    aggregations: count(1)
+                    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 3 
+            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: 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: SELECT count(1) FROM T1 a JOIN T2 b ON a.key = b.key
+PREHOOK: type: QUERY
+PREHOOK: Input: default@t1
+PREHOOK: Input: default@t2
+#### A masked pattern was here ####
+POSTHOOK: query: SELECT count(1) FROM T1 a JOIN T2 b ON a.key = b.key
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@t1
+POSTHOOK: Input: default@t2
+#### A masked pattern was here ####
+6
+PREHOOK: query: EXPLAIN
+SELECT count(1) FROM T1 a RIGHT OUTER JOIN T2 b ON a.key = b.key
+PREHOOK: type: QUERY
+POSTHOOK: query: EXPLAIN
+SELECT count(1) FROM T1 a RIGHT OUTER JOIN T2 b ON a.key = b.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 PARTITION-LEVEL SORT, 1), Map 4 (GROUP PARTITION-LEVEL SORT, 1)
+        Reducer 3 <- Reducer 2 (GROUP, 1)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: key (type: string)
+                    sort order: +
+                    Map-reduce partition columns: key (type: string)
+                    Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+        Map 4 
+            Map Operator Tree:
+                TableScan
+                  alias: a
+                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: key (type: string)
+                    sort order: +
+                    Map-reduce partition columns: key (type: string)
+                    Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+        Reducer 2 
+            Reduce Operator Tree:
+              Join Operator
+                condition map:
+                     Right Outer Join0 to 1
+                condition expressions:
+                  0 
+                  1 
+                Statistics: Num rows: 0 Data size: 33 Basic stats: PARTIAL Column stats: NONE
+                Select Operator
+                  Statistics: Num rows: 0 Data size: 33 Basic stats: PARTIAL Column stats: NONE
+                  Group By Operator
+                    aggregations: count(1)
+                    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 3 
+            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: 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: SELECT count(1) FROM T1 a RIGHT OUTER JOIN T2 b ON a.key = b.key
+PREHOOK: type: QUERY
+PREHOOK: Input: default@t1
+PREHOOK: Input: default@t2
+#### A masked pattern was here ####
+POSTHOOK: query: SELECT count(1) FROM T1 a RIGHT OUTER JOIN T2 b ON a.key = b.key
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@t1
+POSTHOOK: Input: default@t2
+#### A masked pattern was here ####
+8

Added: hive/branches/spark/ql/src/test/results/clientpositive/spark/skewjoinopt10.q.out
URL: http://svn.apache.org/viewvc/hive/branches/spark/ql/src/test/results/clientpositive/spark/skewjoinopt10.q.out?rev=1634671&view=auto
==============================================================================
--- hive/branches/spark/ql/src/test/results/clientpositive/spark/skewjoinopt10.q.out (added)
+++ hive/branches/spark/ql/src/test/results/clientpositive/spark/skewjoinopt10.q.out Mon Oct 27 19:56:58 2014
@@ -0,0 +1,170 @@
+PREHOOK: query: CREATE TABLE T1(key STRING, value STRING) STORED AS TEXTFILE
+PREHOOK: type: CREATETABLE
+PREHOOK: Output: database:default
+PREHOOK: Output: default@T1
+POSTHOOK: query: CREATE TABLE T1(key STRING, value STRING) STORED AS TEXTFILE
+POSTHOOK: type: CREATETABLE
+POSTHOOK: Output: database:default
+POSTHOOK: Output: default@T1
+PREHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T1.txt' INTO TABLE T1
+PREHOOK: type: LOAD
+#### A masked pattern was here ####
+PREHOOK: Output: default@t1
+POSTHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T1.txt' INTO TABLE T1
+POSTHOOK: type: LOAD
+#### A masked pattern was here ####
+POSTHOOK: Output: default@t1
+PREHOOK: query: drop table array_valued_T1
+PREHOOK: type: DROPTABLE
+POSTHOOK: query: drop table array_valued_T1
+POSTHOOK: type: DROPTABLE
+PREHOOK: query: create table array_valued_T1 (key string, value array<string>) SKEWED BY (key) ON ((8))
+PREHOOK: type: CREATETABLE
+PREHOOK: Output: database:default
+PREHOOK: Output: default@array_valued_T1
+POSTHOOK: query: create table array_valued_T1 (key string, value array<string>) SKEWED BY (key) ON ((8))
+POSTHOOK: type: CREATETABLE
+POSTHOOK: Output: database:default
+POSTHOOK: Output: default@array_valued_T1
+PREHOOK: query: insert overwrite table array_valued_T1 select key, array(value) from T1
+PREHOOK: type: QUERY
+PREHOOK: Input: default@t1
+PREHOOK: Output: default@array_valued_t1
+[Error 30017]: Skipping stats aggregation by error org.apache.hadoop.hive.ql.metadata.HiveException: [Error 30015]: Stats aggregator of type counter cannot be connected to
+POSTHOOK: query: insert overwrite table array_valued_T1 select key, array(value) from T1
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@t1
+POSTHOOK: Output: default@array_valued_t1
+POSTHOOK: Lineage: array_valued_t1.key SIMPLE [(t1)t1.FieldSchema(name:key, type:string, comment:null), ]
+POSTHOOK: Lineage: array_valued_t1.value EXPRESSION [(t1)t1.FieldSchema(name:value, type:string, comment:null), ]
+PREHOOK: query: -- This test is to verify the skew join compile optimization when the join is followed by a lateral view
+-- adding a order by at the end to make the results deterministic
+
+explain 
+select * from (select a.key as key, b.value as array_val from T1 a join array_valued_T1 b on a.key=b.key) i lateral view explode (array_val) c as val
+PREHOOK: type: QUERY
+POSTHOOK: query: -- This test is to verify the skew join compile optimization when the join is followed by a lateral view
+-- adding a order by at the end to make the results deterministic
+
+explain 
+select * from (select a.key as key, b.value as array_val from T1 a join array_valued_T1 b on a.key=b.key) i lateral view explode (array_val) c as val
+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 PARTITION-LEVEL SORT, 1), Map 3 (GROUP PARTITION-LEVEL SORT, 1)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: a
+                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+                  Filter Operator
+                    predicate: key is not null (type: boolean)
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: key (type: string)
+                      sort order: +
+                      Map-reduce partition columns: key (type: string)
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+        Map 3 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+                  Filter Operator
+                    predicate: key is not null (type: boolean)
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: key (type: string)
+                      sort order: +
+                      Map-reduce partition columns: key (type: string)
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      value expressions: value (type: array<string>)
+        Reducer 2 
+            Reduce Operator Tree:
+              Join Operator
+                condition map:
+                     Inner Join 0 to 1
+                condition expressions:
+                  0 {KEY.reducesinkkey0}
+                  1 {VALUE._col0}
+                outputColumnNames: _col0, _col6
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                Select Operator
+                  expressions: _col0 (type: string), _col6 (type: array<string>)
+                  outputColumnNames: _col0, _col1
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  Lateral View Forward
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Select Operator
+                      SELECT * : (no compute)
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      Lateral View Join Operator
+                        outputColumnNames: _col0, _col1, _col2
+                        Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                        Select Operator
+                          expressions: _col0 (type: string), _col1 (type: array<string>), _col2 (type: string)
+                          outputColumnNames: _col0, _col1, _col2
+                          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
+                    Select Operator
+                      expressions: _col1 (type: array<string>)
+                      outputColumnNames: _col0
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      UDTF Operator
+                        Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                        function name: explode
+                        Lateral View Join Operator
+                          outputColumnNames: _col0, _col1, _col2
+                          Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                          Select Operator
+                            expressions: _col0 (type: string), _col1 (type: array<string>), _col2 (type: string)
+                            outputColumnNames: _col0, _col1, _col2
+                            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: select * from (select a.key as key, b.value as array_val from T1 a join array_valued_T1 b on a.key=b.key) i lateral view explode (array_val) c as val
+ORDER BY key, val
+PREHOOK: type: QUERY
+PREHOOK: Input: default@array_valued_t1
+PREHOOK: Input: default@t1
+#### A masked pattern was here ####
+POSTHOOK: query: select * from (select a.key as key, b.value as array_val from T1 a join array_valued_T1 b on a.key=b.key) i lateral view explode (array_val) c as val
+ORDER BY key, val
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@array_valued_t1
+POSTHOOK: Input: default@t1
+#### A masked pattern was here ####
+1	["11"]	11
+2	["12"]	12
+3	["13"]	13
+7	["17"]	17
+8	["18"]	18
+8	["18"]	18
+8	["28"]	28
+8	["28"]	28

Added: hive/branches/spark/ql/src/test/results/clientpositive/spark/skewjoinopt11.q.out
URL: http://svn.apache.org/viewvc/hive/branches/spark/ql/src/test/results/clientpositive/spark/skewjoinopt11.q.out?rev=1634671&view=auto
==============================================================================
--- hive/branches/spark/ql/src/test/results/clientpositive/spark/skewjoinopt11.q.out (added)
+++ hive/branches/spark/ql/src/test/results/clientpositive/spark/skewjoinopt11.q.out Mon Oct 27 19:56:58 2014
@@ -0,0 +1,214 @@
+PREHOOK: query: CREATE TABLE T1(key STRING, val STRING)	
+SKEWED BY (key) ON ((2)) STORED AS TEXTFILE
+PREHOOK: type: CREATETABLE
+PREHOOK: Output: database:default
+PREHOOK: Output: default@T1
+POSTHOOK: query: CREATE TABLE T1(key STRING, val STRING)	
+SKEWED BY (key) ON ((2)) STORED AS TEXTFILE
+POSTHOOK: type: CREATETABLE
+POSTHOOK: Output: database:default
+POSTHOOK: Output: default@T1
+PREHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T1.txt' INTO TABLE T1
+PREHOOK: type: LOAD
+#### A masked pattern was here ####
+PREHOOK: Output: default@t1
+POSTHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T1.txt' INTO TABLE T1
+POSTHOOK: type: LOAD
+#### A masked pattern was here ####
+POSTHOOK: Output: default@t1
+PREHOOK: query: CREATE TABLE T2(key STRING, val STRING) STORED AS TEXTFILE
+PREHOOK: type: CREATETABLE
+PREHOOK: Output: database:default
+PREHOOK: Output: default@T2
+POSTHOOK: query: CREATE TABLE T2(key STRING, val STRING) STORED AS TEXTFILE
+POSTHOOK: type: CREATETABLE
+POSTHOOK: Output: database:default
+POSTHOOK: Output: default@T2
+PREHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T2.txt' INTO TABLE T2
+PREHOOK: type: LOAD
+#### A masked pattern was here ####
+PREHOOK: Output: default@t2
+POSTHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T2.txt' INTO TABLE T2
+POSTHOOK: type: LOAD
+#### A masked pattern was here ####
+POSTHOOK: Output: default@t2
+PREHOOK: query: -- This test is to verify the skew join compile optimization when the join is followed
+-- by a union. Both sides of a union consist of a join, which should have used
+-- skew join compile time optimization.
+-- adding an order by at the end to make the results deterministic
+
+EXPLAIN	 
+select * from	
+(      
+  select a.key, a.val as val1, b.val as val2 from T1 a join T2 b on a.key = b.key
+    union all 	
+  select a.key, a.val as val1, b.val as val2 from T1 a join T2 b on a.key = b.key
+) subq1
+PREHOOK: type: QUERY
+POSTHOOK: query: -- This test is to verify the skew join compile optimization when the join is followed
+-- by a union. Both sides of a union consist of a join, which should have used
+-- skew join compile time optimization.
+-- adding an order by at the end to make the results deterministic
+
+EXPLAIN	 
+select * from	
+(      
+  select a.key, a.val as val1, b.val as val2 from T1 a join T2 b on a.key = b.key
+    union all 	
+  select a.key, a.val as val1, b.val as val2 from T1 a join T2 b on a.key = b.key
+) subq1
+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 PARTITION-LEVEL SORT, 1), Map 4 (GROUP PARTITION-LEVEL SORT, 1)
+        Reducer 6 <- Map 5 (GROUP PARTITION-LEVEL SORT, 1), Map 7 (GROUP PARTITION-LEVEL SORT, 1)
+        Union 3 <- Reducer 2 (NONE, 0), Reducer 6 (NONE, 0)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: a
+                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+                  Filter Operator
+                    predicate: key is not null (type: boolean)
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: key (type: string)
+                      sort order: +
+                      Map-reduce partition columns: key (type: string)
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      value expressions: val (type: string)
+        Map 4 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+                  Filter Operator
+                    predicate: key is not null (type: boolean)
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: key (type: string)
+                      sort order: +
+                      Map-reduce partition columns: key (type: string)
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      value expressions: val (type: string)
+        Map 5 
+            Map Operator Tree:
+                TableScan
+                  alias: a
+                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+                  Filter Operator
+                    predicate: key is not null (type: boolean)
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: key (type: string)
+                      sort order: +
+                      Map-reduce partition columns: key (type: string)
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      value expressions: val (type: string)
+        Map 7 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+                  Filter Operator
+                    predicate: key is not null (type: boolean)
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: key (type: string)
+                      sort order: +
+                      Map-reduce partition columns: key (type: string)
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      value expressions: val (type: string)
+        Reducer 2 
+            Reduce Operator Tree:
+              Join Operator
+                condition map:
+                     Inner Join 0 to 1
+                condition expressions:
+                  0 {KEY.reducesinkkey0} {VALUE._col0}
+                  1 {VALUE._col0}
+                outputColumnNames: _col0, _col1, _col6
+                Select Operator
+                  expressions: _col0 (type: string), _col1 (type: string), _col6 (type: string)
+                  outputColumnNames: _col0, _col1, _col2
+                  Select Operator
+                    expressions: _col0 (type: string), _col1 (type: string), _col2 (type: string)
+                    outputColumnNames: _col0, _col1, _col2
+                    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
+        Reducer 6 
+            Reduce Operator Tree:
+              Join Operator
+                condition map:
+                     Inner Join 0 to 1
+                condition expressions:
+                  0 {KEY.reducesinkkey0} {VALUE._col0}
+                  1 {VALUE._col0}
+                outputColumnNames: _col0, _col1, _col6
+                Select Operator
+                  expressions: _col0 (type: string), _col1 (type: string), _col6 (type: string)
+                  outputColumnNames: _col0, _col1, _col2
+                  Select Operator
+                    expressions: _col0 (type: string), _col1 (type: string), _col2 (type: string)
+                    outputColumnNames: _col0, _col1, _col2
+                    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
+        Union 3 
+            Vertex: Union 3
+
+  Stage: Stage-0
+    Fetch Operator
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: select * from	
+(      
+  select a.key, a.val as val1, b.val as val2 from T1 a join T2 b on a.key = b.key
+    union all 	
+  select a.key, a.val as val1, b.val as val2 from T1 a join T2 b on a.key = b.key
+) subq1
+ORDER BY key, val1, val2
+PREHOOK: type: QUERY
+PREHOOK: Input: default@t1
+PREHOOK: Input: default@t2
+#### A masked pattern was here ####
+POSTHOOK: query: select * from	
+(      
+  select a.key, a.val as val1, b.val as val2 from T1 a join T2 b on a.key = b.key
+    union all 	
+  select a.key, a.val as val1, b.val as val2 from T1 a join T2 b on a.key = b.key
+) subq1
+ORDER BY key, val1, val2
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@t1
+POSTHOOK: Input: default@t2
+#### A masked pattern was here ####
+2	12	22
+2	12	22
+3	13	13
+3	13	13
+8	18	18
+8	18	18
+8	18	18
+8	18	18
+8	28	18
+8	28	18
+8	28	18
+8	28	18

Added: hive/branches/spark/ql/src/test/results/clientpositive/spark/skewjoinopt12.q.out
URL: http://svn.apache.org/viewvc/hive/branches/spark/ql/src/test/results/clientpositive/spark/skewjoinopt12.q.out?rev=1634671&view=auto
==============================================================================
--- hive/branches/spark/ql/src/test/results/clientpositive/spark/skewjoinopt12.q.out (added)
+++ hive/branches/spark/ql/src/test/results/clientpositive/spark/skewjoinopt12.q.out Mon Oct 27 19:56:58 2014
@@ -0,0 +1,130 @@
+PREHOOK: query: CREATE TABLE T1(key STRING, val STRING)
+SKEWED BY (key, val) ON ((2, 12), (8, 18)) STORED AS TEXTFILE
+PREHOOK: type: CREATETABLE
+PREHOOK: Output: database:default
+PREHOOK: Output: default@T1
+POSTHOOK: query: CREATE TABLE T1(key STRING, val STRING)
+SKEWED BY (key, val) ON ((2, 12), (8, 18)) STORED AS TEXTFILE
+POSTHOOK: type: CREATETABLE
+POSTHOOK: Output: database:default
+POSTHOOK: Output: default@T1
+PREHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T1.txt' INTO TABLE T1
+PREHOOK: type: LOAD
+#### A masked pattern was here ####
+PREHOOK: Output: default@t1
+POSTHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T1.txt' INTO TABLE T1
+POSTHOOK: type: LOAD
+#### A masked pattern was here ####
+POSTHOOK: Output: default@t1
+PREHOOK: query: CREATE TABLE T2(key STRING, val STRING)
+SKEWED BY (key, val) ON ((3, 13), (8, 18)) STORED AS TEXTFILE
+PREHOOK: type: CREATETABLE
+PREHOOK: Output: database:default
+PREHOOK: Output: default@T2
+POSTHOOK: query: CREATE TABLE T2(key STRING, val STRING)
+SKEWED BY (key, val) ON ((3, 13), (8, 18)) STORED AS TEXTFILE
+POSTHOOK: type: CREATETABLE
+POSTHOOK: Output: database:default
+POSTHOOK: Output: default@T2
+PREHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T2.txt' INTO TABLE T2
+PREHOOK: type: LOAD
+#### A masked pattern was here ####
+PREHOOK: Output: default@t2
+POSTHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T2.txt' INTO TABLE T2
+POSTHOOK: type: LOAD
+#### A masked pattern was here ####
+POSTHOOK: Output: default@t2
+PREHOOK: query: -- Both the join tables are skewed by 2 keys, and one of the skewed values
+-- is common to both the tables. The join key matches the skewed key set.
+-- adding a order by at the end to make the results deterministic
+
+EXPLAIN
+SELECT a.*, b.* FROM T1 a JOIN T2 b ON a.key = b.key and a.val = b.val
+PREHOOK: type: QUERY
+POSTHOOK: query: -- Both the join tables are skewed by 2 keys, and one of the skewed values
+-- is common to both the tables. The join key matches the skewed key set.
+-- adding a order by at the end to make the results deterministic
+
+EXPLAIN
+SELECT a.*, b.* FROM T1 a JOIN T2 b ON a.key = b.key and a.val = b.val
+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 PARTITION-LEVEL SORT, 1), Map 3 (GROUP PARTITION-LEVEL SORT, 1)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+                  Filter Operator
+                    predicate: (key is not null and val is not null) (type: boolean)
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: key (type: string), val (type: string)
+                      sort order: ++
+                      Map-reduce partition columns: key (type: string), val (type: string)
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+        Map 3 
+            Map Operator Tree:
+                TableScan
+                  alias: a
+                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+                  Filter Operator
+                    predicate: (key is not null and val is not null) (type: boolean)
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: key (type: string), val (type: string)
+                      sort order: ++
+                      Map-reduce partition columns: key (type: string), val (type: string)
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+        Reducer 2 
+            Reduce Operator Tree:
+              Join Operator
+                condition map:
+                     Inner Join 0 to 1
+                condition expressions:
+                  0 {KEY.reducesinkkey0} {KEY.reducesinkkey1}
+                  1 {KEY.reducesinkkey0} {KEY.reducesinkkey1}
+                outputColumnNames: _col0, _col1, _col5, _col6
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                Select Operator
+                  expressions: _col0 (type: string), _col1 (type: string), _col5 (type: string), _col6 (type: string)
+                  outputColumnNames: _col0, _col1, _col2, _col3
+                  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: SELECT a.*, b.* FROM T1 a JOIN T2 b ON a.key = b.key and a.val = b.val
+ORDER BY a.key, b.key, a.val, b.val
+PREHOOK: type: QUERY
+PREHOOK: Input: default@t1
+PREHOOK: Input: default@t2
+#### A masked pattern was here ####
+POSTHOOK: query: SELECT a.*, b.* FROM T1 a JOIN T2 b ON a.key = b.key and a.val = b.val
+ORDER BY a.key, b.key, a.val, b.val
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@t1
+POSTHOOK: Input: default@t2
+#### A masked pattern was here ####
+3	13	3	13
+8	18	8	18
+8	18	8	18

Added: hive/branches/spark/ql/src/test/results/clientpositive/spark/skewjoinopt13.q.out
URL: http://svn.apache.org/viewvc/hive/branches/spark/ql/src/test/results/clientpositive/spark/skewjoinopt13.q.out?rev=1634671&view=auto
==============================================================================
--- hive/branches/spark/ql/src/test/results/clientpositive/spark/skewjoinopt13.q.out (added)
+++ hive/branches/spark/ql/src/test/results/clientpositive/spark/skewjoinopt13.q.out Mon Oct 27 19:56:58 2014
@@ -0,0 +1,195 @@
+PREHOOK: query: CREATE TABLE T1(key STRING, val STRING) STORED AS TEXTFILE
+PREHOOK: type: CREATETABLE
+PREHOOK: Output: database:default
+PREHOOK: Output: default@T1
+POSTHOOK: query: CREATE TABLE T1(key STRING, val STRING) STORED AS TEXTFILE
+POSTHOOK: type: CREATETABLE
+POSTHOOK: Output: database:default
+POSTHOOK: Output: default@T1
+PREHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T1.txt' INTO TABLE T1
+PREHOOK: type: LOAD
+#### A masked pattern was here ####
+PREHOOK: Output: default@t1
+POSTHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T1.txt' INTO TABLE T1
+POSTHOOK: type: LOAD
+#### A masked pattern was here ####
+POSTHOOK: Output: default@t1
+PREHOOK: query: CREATE TABLE T2(key STRING, val STRING) STORED AS TEXTFILE
+PREHOOK: type: CREATETABLE
+PREHOOK: Output: database:default
+PREHOOK: Output: default@T2
+POSTHOOK: query: CREATE TABLE T2(key STRING, val STRING) STORED AS TEXTFILE
+POSTHOOK: type: CREATETABLE
+POSTHOOK: Output: database:default
+POSTHOOK: Output: default@T2
+PREHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T2.txt' INTO TABLE T2
+PREHOOK: type: LOAD
+#### A masked pattern was here ####
+PREHOOK: Output: default@t2
+POSTHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T2.txt' INTO TABLE T2
+POSTHOOK: type: LOAD
+#### A masked pattern was here ####
+POSTHOOK: Output: default@t2
+PREHOOK: query: CREATE TABLE T3(key STRING, val STRING)
+SKEWED BY (val) ON ((12)) STORED AS TEXTFILE
+PREHOOK: type: CREATETABLE
+PREHOOK: Output: database:default
+PREHOOK: Output: default@T3
+POSTHOOK: query: CREATE TABLE T3(key STRING, val STRING)
+SKEWED BY (val) ON ((12)) STORED AS TEXTFILE
+POSTHOOK: type: CREATETABLE
+POSTHOOK: Output: database:default
+POSTHOOK: Output: default@T3
+PREHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T3.txt' INTO TABLE T3
+PREHOOK: type: LOAD
+#### A masked pattern was here ####
+PREHOOK: Output: default@t3
+POSTHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T3.txt' INTO TABLE T3
+POSTHOOK: type: LOAD
+#### A masked pattern was here ####
+POSTHOOK: Output: default@t3
+PREHOOK: query: -- This test is for skewed join compile time optimization for more than 2 tables.
+-- The join key for table 3 is different from the join key used for joining
+-- tables 1 and 2. Table 3 is skewed, but since one of the join sources for table
+-- 3 consist of a sub-query which contains a join, the compile time skew join 
+-- optimization is not performed
+-- adding a order by at the end to make the results deterministic
+
+EXPLAIN
+select *
+from 
+T1 a join T2 b on a.key = b.key 
+join T3 c on a.val = c.val
+PREHOOK: type: QUERY
+POSTHOOK: query: -- This test is for skewed join compile time optimization for more than 2 tables.
+-- The join key for table 3 is different from the join key used for joining
+-- tables 1 and 2. Table 3 is skewed, but since one of the join sources for table
+-- 3 consist of a sub-query which contains a join, the compile time skew join 
+-- optimization is not performed
+-- adding a order by at the end to make the results deterministic
+
+EXPLAIN
+select *
+from 
+T1 a join T2 b on a.key = b.key 
+join T3 c on a.val = c.val
+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 PARTITION-LEVEL SORT, 1), Map 5 (GROUP PARTITION-LEVEL SORT, 1)
+        Reducer 3 <- Map 4 (GROUP PARTITION-LEVEL SORT, 1), Reducer 2 (GROUP PARTITION-LEVEL SORT, 1)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+                  Filter Operator
+                    predicate: key is not null (type: boolean)
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: key (type: string)
+                      sort order: +
+                      Map-reduce partition columns: key (type: string)
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      value expressions: val (type: string)
+        Map 4 
+            Map Operator Tree:
+                TableScan
+                  alias: c
+                  Statistics: Num rows: 0 Data size: 20 Basic stats: PARTIAL Column stats: NONE
+                  Filter Operator
+                    predicate: val is not null (type: boolean)
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: val (type: string)
+                      sort order: +
+                      Map-reduce partition columns: val (type: string)
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      value expressions: key (type: string)
+        Map 5 
+            Map Operator Tree:
+                TableScan
+                  alias: a
+                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
+                  Filter Operator
+                    predicate: (key is not null and val is not null) (type: boolean)
+                    Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: key (type: string)
+                      sort order: +
+                      Map-reduce partition columns: key (type: string)
+                      Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                      value expressions: val (type: string)
+        Reducer 2 
+            Reduce Operator Tree:
+              Join Operator
+                condition map:
+                     Inner Join 0 to 1
+                condition expressions:
+                  0 {KEY.reducesinkkey0} {VALUE._col0}
+                  1 {KEY.reducesinkkey0} {VALUE._col0}
+                outputColumnNames: _col0, _col1, _col5, _col6
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                Reduce Output Operator
+                  key expressions: _col1 (type: string)
+                  sort order: +
+                  Map-reduce partition columns: _col1 (type: string)
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                  value expressions: _col0 (type: string), _col5 (type: string), _col6 (type: string)
+        Reducer 3 
+            Reduce Operator Tree:
+              Join Operator
+                condition map:
+                     Inner Join 0 to 1
+                condition expressions:
+                  0 {VALUE._col0} {KEY.reducesinkkey0} {VALUE._col4} {VALUE._col5}
+                  1 {VALUE._col0} {KEY.reducesinkkey0}
+                outputColumnNames: _col0, _col1, _col5, _col6, _col10, _col11
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
+                Select Operator
+                  expressions: _col0 (type: string), _col1 (type: string), _col5 (type: string), _col6 (type: string), _col10 (type: string), _col11 (type: string)
+                  outputColumnNames: _col0, _col1, _col2, _col3, _col4, _col5
+                  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: select *
+from 
+T1 a join T2 b on a.key = b.key 
+join T3 c on a.val = c.val
+order by a.key, b.key, c.key, a.val, b.val, c.val
+PREHOOK: type: QUERY
+PREHOOK: Input: default@t1
+PREHOOK: Input: default@t2
+PREHOOK: Input: default@t3
+#### A masked pattern was here ####
+POSTHOOK: query: select *
+from 
+T1 a join T2 b on a.key = b.key 
+join T3 c on a.val = c.val
+order by a.key, b.key, c.key, a.val, b.val, c.val
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@t1
+POSTHOOK: Input: default@t2
+POSTHOOK: Input: default@t3
+#### A masked pattern was here ####
+2	12	2	22	2	12



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