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From pxi...@apache.org
Subject hive git commit: HIVE-16227: GenMRFileSink1.java may refer to a wrong MR task in multi-insert case (Pengcheng Xiong, reviewed by Ashutosh Chauhan)
Date Mon, 20 Mar 2017 18:06:54 GMT
Repository: hive
Updated Branches:
  refs/heads/master 031890ca8 -> 7ea85a0a4


HIVE-16227: GenMRFileSink1.java may refer to a wrong MR task in multi-insert case (Pengcheng Xiong, reviewed by Ashutosh Chauhan)


Project: http://git-wip-us.apache.org/repos/asf/hive/repo
Commit: http://git-wip-us.apache.org/repos/asf/hive/commit/7ea85a0a
Tree: http://git-wip-us.apache.org/repos/asf/hive/tree/7ea85a0a
Diff: http://git-wip-us.apache.org/repos/asf/hive/diff/7ea85a0a

Branch: refs/heads/master
Commit: 7ea85a0a48fb34508f84126ef91158440d159a36
Parents: 031890c
Author: Pengcheng Xiong <pxiong@apache.org>
Authored: Mon Mar 20 11:07:23 2017 -0700
Committer: Pengcheng Xiong <pxiong@apache.org>
Committed: Mon Mar 20 11:07:23 2017 -0700

----------------------------------------------------------------------
 .../test/resources/testconfiguration.properties |    1 +
 .../hive/ql/optimizer/GenMRFileSink1.java       |   11 +-
 .../queries/clientpositive/parallel_colstats.q  |   32 +
 .../groupby_multi_single_reducer.q.out          |    2 +-
 .../clientpositive/groupby_sort_skew_1_23.q.out |    4 +-
 .../clientpositive/llap/parallel_colstats.q.out | 1516 +++++++++++++++++
 .../clientpositive/multi_insert_gby3.q.out      |    2 +-
 .../clientpositive/multi_insert_mixed.q.out     |    2 +-
 .../clientpositive/parallel_colstats.q.out      | 1529 ++++++++++++++++++
 9 files changed, 3092 insertions(+), 7 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/hive/blob/7ea85a0a/itests/src/test/resources/testconfiguration.properties
----------------------------------------------------------------------
diff --git a/itests/src/test/resources/testconfiguration.properties b/itests/src/test/resources/testconfiguration.properties
index afcc3ee..3c98a57 100644
--- a/itests/src/test/resources/testconfiguration.properties
+++ b/itests/src/test/resources/testconfiguration.properties
@@ -71,6 +71,7 @@ minillap.shared.query.files=insert_into1.q,\
   orc_merge3.q,\
   orc_merge4.q,\
   orc_merge_diff_fs.q,\
+  parallel_colstats.q,\
   unionDistinct_1.q,\
   union_type_chk.q,\
   cte_2.q,\

http://git-wip-us.apache.org/repos/asf/hive/blob/7ea85a0a/ql/src/java/org/apache/hadoop/hive/ql/optimizer/GenMRFileSink1.java
----------------------------------------------------------------------
diff --git a/ql/src/java/org/apache/hadoop/hive/ql/optimizer/GenMRFileSink1.java b/ql/src/java/org/apache/hadoop/hive/ql/optimizer/GenMRFileSink1.java
index a231543..d7a83f7 100644
--- a/ql/src/java/org/apache/hadoop/hive/ql/optimizer/GenMRFileSink1.java
+++ b/ql/src/java/org/apache/hadoop/hive/ql/optimizer/GenMRFileSink1.java
@@ -38,6 +38,7 @@ import org.apache.hadoop.hive.ql.exec.UnionOperator;
 import org.apache.hadoop.hive.ql.lib.Node;
 import org.apache.hadoop.hive.ql.lib.NodeProcessor;
 import org.apache.hadoop.hive.ql.lib.NodeProcessorCtx;
+import org.apache.hadoop.hive.ql.optimizer.GenMRProcContext.GenMapRedCtx;
 import org.apache.hadoop.hive.ql.parse.ParseContext;
 import org.apache.hadoop.hive.ql.parse.SemanticException;
 import org.apache.hadoop.hive.ql.plan.FileSinkDesc;
@@ -68,10 +69,16 @@ public class GenMRFileSink1 implements NodeProcessor {
     GenMRProcContext ctx = (GenMRProcContext) opProcCtx;
     ParseContext parseCtx = ctx.getParseCtx();
     boolean chDir = false;
-    Task<? extends Serializable> currTask = ctx.getCurrTask();
+    // we should look take the parent of fsOp's task as the current task.
+    FileSinkOperator fsOp = (FileSinkOperator) nd;
+    Map<Operator<? extends OperatorDesc>, GenMapRedCtx> mapCurrCtx = ctx
+        .getMapCurrCtx();
+    GenMapRedCtx mapredCtx = mapCurrCtx.get(fsOp.getParentOperators().get(0));
+    Task<? extends Serializable> currTask = mapredCtx.getCurrTask();
+    
+    ctx.setCurrTask(currTask);
     ctx.addRootIfPossible(currTask);
 
-    FileSinkOperator fsOp = (FileSinkOperator) nd;
     boolean isInsertTable = // is INSERT OVERWRITE TABLE
         GenMapRedUtils.isInsertInto(parseCtx, fsOp);
     HiveConf hconf = parseCtx.getConf();

http://git-wip-us.apache.org/repos/asf/hive/blob/7ea85a0a/ql/src/test/queries/clientpositive/parallel_colstats.q
----------------------------------------------------------------------
diff --git a/ql/src/test/queries/clientpositive/parallel_colstats.q b/ql/src/test/queries/clientpositive/parallel_colstats.q
new file mode 100644
index 0000000..86603c1
--- /dev/null
+++ b/ql/src/test/queries/clientpositive/parallel_colstats.q
@@ -0,0 +1,32 @@
+set hive.explain.user=false;
+set mapred.job.name='test_parallel';
+set hive.exec.parallel=true;
+set hive.input.format=org.apache.hadoop.hive.ql.io.HiveInputFormat;
+set hive.stats.column.autogather=true;
+
+-- SORT_QUERY_RESULTS
+
+create table if not exists src_a like src;
+create table if not exists src_b like src;
+
+explain
+from (select key, value from src group by key, value) s
+insert overwrite table src_a select s.key, s.value group by s.key, s.value
+insert overwrite table src_b select s.key, s.value group by s.key, s.value;
+
+from (select key, value from src group by key, value) s
+insert overwrite table src_a select s.key, s.value group by s.key, s.value
+insert overwrite table src_b select s.key, s.value group by s.key, s.value;
+
+select * from src_a;
+select * from src_b;
+
+
+set hive.input.format=org.apache.hadoop.hive.ql.io.CombineHiveInputFormat;
+
+from (select key, value from src group by key, value) s
+insert overwrite table src_a select s.key, s.value group by s.key, s.value
+insert overwrite table src_b select s.key, s.value group by s.key, s.value;
+
+select * from src_a;
+select * from src_b;

http://git-wip-us.apache.org/repos/asf/hive/blob/7ea85a0a/ql/src/test/results/clientpositive/groupby_multi_single_reducer.q.out
----------------------------------------------------------------------
diff --git a/ql/src/test/results/clientpositive/groupby_multi_single_reducer.q.out b/ql/src/test/results/clientpositive/groupby_multi_single_reducer.q.out
index a05c245..256784d 100644
--- a/ql/src/test/results/clientpositive/groupby_multi_single_reducer.q.out
+++ b/ql/src/test/results/clientpositive/groupby_multi_single_reducer.q.out
@@ -284,7 +284,7 @@ STAGE DEPENDENCIES:
   Stage-10 depends on stages: Stage-9
   Stage-3 depends on stages: Stage-10
   Stage-11 depends on stages: Stage-3
-  Stage-4 depends on stages: Stage-10
+  Stage-4 depends on stages: Stage-9
   Stage-12 depends on stages: Stage-4
 
 STAGE PLANS:

http://git-wip-us.apache.org/repos/asf/hive/blob/7ea85a0a/ql/src/test/results/clientpositive/groupby_sort_skew_1_23.q.out
----------------------------------------------------------------------
diff --git a/ql/src/test/results/clientpositive/groupby_sort_skew_1_23.q.out b/ql/src/test/results/clientpositive/groupby_sort_skew_1_23.q.out
index 9c09302..6e09753 100644
--- a/ql/src/test/results/clientpositive/groupby_sort_skew_1_23.q.out
+++ b/ql/src/test/results/clientpositive/groupby_sort_skew_1_23.q.out
@@ -6204,7 +6204,7 @@ STAGE DEPENDENCIES:
   Stage-3 depends on stages: Stage-2
   Stage-0 depends on stages: Stage-3
   Stage-4 depends on stages: Stage-0
-  Stage-1 depends on stages: Stage-3
+  Stage-1 depends on stages: Stage-2
   Stage-5 depends on stages: Stage-1
 
 STAGE PLANS:
@@ -6384,7 +6384,7 @@ STAGE DEPENDENCIES:
   Stage-3 depends on stages: Stage-2
   Stage-0 depends on stages: Stage-3
   Stage-4 depends on stages: Stage-0
-  Stage-1 depends on stages: Stage-3
+  Stage-1 depends on stages: Stage-2
   Stage-5 depends on stages: Stage-1
 
 STAGE PLANS:

http://git-wip-us.apache.org/repos/asf/hive/blob/7ea85a0a/ql/src/test/results/clientpositive/llap/parallel_colstats.q.out
----------------------------------------------------------------------
diff --git a/ql/src/test/results/clientpositive/llap/parallel_colstats.q.out b/ql/src/test/results/clientpositive/llap/parallel_colstats.q.out
new file mode 100644
index 0000000..95ed8b8
--- /dev/null
+++ b/ql/src/test/results/clientpositive/llap/parallel_colstats.q.out
@@ -0,0 +1,1516 @@
+PREHOOK: query: create table if not exists src_a like src
+PREHOOK: type: CREATETABLE
+PREHOOK: Output: database:default
+PREHOOK: Output: default@src_a
+POSTHOOK: query: create table if not exists src_a like src
+POSTHOOK: type: CREATETABLE
+POSTHOOK: Output: database:default
+POSTHOOK: Output: default@src_a
+PREHOOK: query: create table if not exists src_b like src
+PREHOOK: type: CREATETABLE
+PREHOOK: Output: database:default
+PREHOOK: Output: default@src_b
+POSTHOOK: query: create table if not exists src_b like src
+POSTHOOK: type: CREATETABLE
+POSTHOOK: Output: database:default
+POSTHOOK: Output: default@src_b
+PREHOOK: query: explain
+from (select key, value from src group by key, value) s
+insert overwrite table src_a select s.key, s.value group by s.key, s.value
+insert overwrite table src_b select s.key, s.value group by s.key, s.value
+PREHOOK: type: QUERY
+POSTHOOK: query: explain
+from (select key, value from src group by key, value) s
+insert overwrite table src_a select s.key, s.value group by s.key, s.value
+insert overwrite table src_b select s.key, s.value group by s.key, s.value
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-2 is a root stage
+  Stage-3 depends on stages: Stage-2
+  Stage-0 depends on stages: Stage-3
+  Stage-4 depends on stages: Stage-0
+  Stage-6 depends on stages: Stage-4, Stage-5
+  Stage-7 depends on stages: Stage-4, Stage-5
+  Stage-1 depends on stages: Stage-3
+  Stage-5 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-2
+    Tez
+#### A masked pattern was here ####
+      Edges:
+        Reducer 2 <- Map 1 (SIMPLE_EDGE)
+        Reducer 3 <- Reducer 2 (SIMPLE_EDGE)
+        Reducer 4 <- Reducer 3 (CUSTOM_SIMPLE_EDGE)
+        Reducer 5 <- Reducer 3 (CUSTOM_SIMPLE_EDGE)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: src
+                  Statistics: Num rows: 500 Data size: 89000 Basic stats: COMPLETE Column stats: COMPLETE
+                  Select Operator
+                    expressions: key (type: string), value (type: string)
+                    outputColumnNames: key, value
+                    Statistics: Num rows: 500 Data size: 89000 Basic stats: COMPLETE Column stats: COMPLETE
+                    Group By Operator
+                      keys: key (type: string), value (type: string)
+                      mode: hash
+                      outputColumnNames: _col0, _col1
+                      Statistics: Num rows: 250 Data size: 44500 Basic stats: COMPLETE Column stats: COMPLETE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: string), _col1 (type: string)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: string), _col1 (type: string)
+                        Statistics: Num rows: 250 Data size: 44500 Basic stats: COMPLETE Column stats: COMPLETE
+            Execution mode: llap
+            LLAP IO: no inputs
+        Reducer 2 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                keys: KEY._col0 (type: string), KEY._col1 (type: string)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1
+                Statistics: Num rows: 250 Data size: 44500 Basic stats: COMPLETE Column stats: COMPLETE
+                Reduce Output Operator
+                  key expressions: _col0 (type: string), _col1 (type: string)
+                  sort order: ++
+                  Map-reduce partition columns: _col0 (type: string), _col1 (type: string)
+                  Statistics: Num rows: 250 Data size: 44500 Basic stats: COMPLETE Column stats: COMPLETE
+        Reducer 3 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Forward
+                Statistics: Num rows: 250 Data size: 44500 Basic stats: COMPLETE Column stats: COMPLETE
+                Group By Operator
+                  keys: KEY._col0 (type: string), KEY._col1 (type: string)
+                  mode: complete
+                  outputColumnNames: _col0, _col1
+                  Statistics: Num rows: 250 Data size: 44500 Basic stats: COMPLETE Column stats: COMPLETE
+                  File Output Operator
+                    compressed: false
+                    Statistics: Num rows: 250 Data size: 44500 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
+                        name: default.src_a
+                  Select Operator
+                    expressions: _col0 (type: string), _col1 (type: string)
+                    outputColumnNames: key, value
+                    Statistics: Num rows: 250 Data size: 44500 Basic stats: COMPLETE Column stats: COMPLETE
+                    Group By Operator
+                      aggregations: compute_stats(key, 16), compute_stats(value, 16)
+                      mode: hash
+                      outputColumnNames: _col0, _col1
+                      Statistics: Num rows: 1 Data size: 984 Basic stats: COMPLETE Column stats: COMPLETE
+                      Reduce Output Operator
+                        sort order: 
+                        Statistics: Num rows: 1 Data size: 984 Basic stats: COMPLETE Column stats: COMPLETE
+                        value expressions: _col0 (type: struct<columntype:string,maxlength:bigint,sumlength:bigint,count:bigint,countnulls:bigint,bitvector:string,numbitvectors:int>), _col1 (type: struct<columntype:string,maxlength:bigint,sumlength:bigint,count:bigint,countnulls:bigint,bitvector:string,numbitvectors:int>)
+                Group By Operator
+                  keys: KEY._col0 (type: string), KEY._col1 (type: string)
+                  mode: complete
+                  outputColumnNames: _col0, _col1
+                  Statistics: Num rows: 250 Data size: 44500 Basic stats: COMPLETE Column stats: COMPLETE
+                  File Output Operator
+                    compressed: false
+                    Statistics: Num rows: 250 Data size: 44500 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
+                        name: default.src_b
+                  Select Operator
+                    expressions: _col0 (type: string), _col1 (type: string)
+                    outputColumnNames: key, value
+                    Statistics: Num rows: 250 Data size: 44500 Basic stats: COMPLETE Column stats: COMPLETE
+                    Group By Operator
+                      aggregations: compute_stats(key, 16), compute_stats(value, 16)
+                      mode: hash
+                      outputColumnNames: _col0, _col1
+                      Statistics: Num rows: 1 Data size: 984 Basic stats: COMPLETE Column stats: COMPLETE
+                      Reduce Output Operator
+                        sort order: 
+                        Statistics: Num rows: 1 Data size: 984 Basic stats: COMPLETE Column stats: COMPLETE
+                        value expressions: _col0 (type: struct<columntype:string,maxlength:bigint,sumlength:bigint,count:bigint,countnulls:bigint,bitvector:string,numbitvectors:int>), _col1 (type: struct<columntype:string,maxlength:bigint,sumlength:bigint,count:bigint,countnulls:bigint,bitvector:string,numbitvectors:int>)
+        Reducer 4 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: compute_stats(VALUE._col0), compute_stats(VALUE._col1)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1
+                Statistics: Num rows: 1 Data size: 960 Basic stats: COMPLETE Column stats: COMPLETE
+                File Output Operator
+                  compressed: false
+                  Statistics: Num rows: 1 Data size: 960 Basic stats: COMPLETE Column stats: COMPLETE
+                  table:
+                      input format: org.apache.hadoop.mapred.SequenceFileInputFormat
+                      output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
+                      serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+        Reducer 5 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: compute_stats(VALUE._col0), compute_stats(VALUE._col1)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1
+                Statistics: Num rows: 1 Data size: 960 Basic stats: COMPLETE Column stats: COMPLETE
+                File Output Operator
+                  compressed: false
+                  Statistics: Num rows: 1 Data size: 960 Basic stats: COMPLETE Column stats: COMPLETE
+                  table:
+                      input format: org.apache.hadoop.mapred.SequenceFileInputFormat
+                      output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
+                      serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+
+  Stage: Stage-3
+    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.src_a
+
+  Stage: Stage-4
+    Stats-Aggr Operator
+
+  Stage: Stage-6
+    Column Stats Work
+      Column Stats Desc:
+          Columns: key, value
+          Column Types: string, string
+          Table: default.src_a
+
+  Stage: Stage-7
+    Column Stats Work
+      Column Stats Desc:
+          Columns: key, value
+          Column Types: string, string
+          Table: default.src_b
+
+  Stage: Stage-1
+    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.src_b
+
+  Stage: Stage-5
+    Stats-Aggr Operator
+
+PREHOOK: query: from (select key, value from src group by key, value) s
+insert overwrite table src_a select s.key, s.value group by s.key, s.value
+insert overwrite table src_b select s.key, s.value group by s.key, s.value
+PREHOOK: type: QUERY
+PREHOOK: Input: default@src
+PREHOOK: Output: default@src_a
+PREHOOK: Output: default@src_b
+POSTHOOK: query: from (select key, value from src group by key, value) s
+insert overwrite table src_a select s.key, s.value group by s.key, s.value
+insert overwrite table src_b select s.key, s.value group by s.key, s.value
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@src
+POSTHOOK: Output: default@src_a
+POSTHOOK: Output: default@src_b
+POSTHOOK: Lineage: src_a.key SIMPLE [(src)src.FieldSchema(name:key, type:string, comment:default), ]
+POSTHOOK: Lineage: src_a.value SIMPLE [(src)src.FieldSchema(name:value, type:string, comment:default), ]
+POSTHOOK: Lineage: src_b.key SIMPLE [(src)src.FieldSchema(name:key, type:string, comment:default), ]
+POSTHOOK: Lineage: src_b.value SIMPLE [(src)src.FieldSchema(name:value, type:string, comment:default), ]
+PREHOOK: query: select * from src_a
+PREHOOK: type: QUERY
+PREHOOK: Input: default@src_a
+#### A masked pattern was here ####
+POSTHOOK: query: select * from src_a
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@src_a
+#### A masked pattern was here ####
+0	val_0
+10	val_10
+100	val_100
+103	val_103
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+105	val_105
+11	val_11
+111	val_111
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+114	val_114
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+118	val_118
+119	val_119
+12	val_12
+120	val_120
+125	val_125
+126	val_126
+128	val_128
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+136	val_136
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+143	val_143
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+149	val_149
+15	val_15
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+26	val_26
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+27	val_27
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+28	val_28
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+30	val_30
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+315	val_315
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+321	val_321
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+33	val_33
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+34	val_34
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+345	val_345
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+35	val_35
+351	val_351
+353	val_353
+356	val_356
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+PREHOOK: query: select * from src_b
+PREHOOK: type: QUERY
+PREHOOK: Input: default@src_b
+#### A masked pattern was here ####
+POSTHOOK: query: select * from src_b
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@src_b
+#### A masked pattern was here ####
+0	val_0
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+97	val_97
+98	val_98
+PREHOOK: query: from (select key, value from src group by key, value) s
+insert overwrite table src_a select s.key, s.value group by s.key, s.value
+insert overwrite table src_b select s.key, s.value group by s.key, s.value
+PREHOOK: type: QUERY
+PREHOOK: Input: default@src
+PREHOOK: Output: default@src_a
+PREHOOK: Output: default@src_b
+POSTHOOK: query: from (select key, value from src group by key, value) s
+insert overwrite table src_a select s.key, s.value group by s.key, s.value
+insert overwrite table src_b select s.key, s.value group by s.key, s.value
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@src
+POSTHOOK: Output: default@src_a
+POSTHOOK: Output: default@src_b
+POSTHOOK: Lineage: src_a.key SIMPLE [(src)src.FieldSchema(name:key, type:string, comment:default), ]
+POSTHOOK: Lineage: src_a.value SIMPLE [(src)src.FieldSchema(name:value, type:string, comment:default), ]
+POSTHOOK: Lineage: src_b.key SIMPLE [(src)src.FieldSchema(name:key, type:string, comment:default), ]
+POSTHOOK: Lineage: src_b.value SIMPLE [(src)src.FieldSchema(name:value, type:string, comment:default), ]
+PREHOOK: query: select * from src_a
+PREHOOK: type: QUERY
+PREHOOK: Input: default@src_a
+#### A masked pattern was here ####
+POSTHOOK: query: select * from src_a
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@src_a
+#### A masked pattern was here ####
+0	val_0
+10	val_10
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+105	val_105
+11	val_11
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+PREHOOK: query: select * from src_b
+PREHOOK: type: QUERY
+PREHOOK: Input: default@src_b
+#### A masked pattern was here ####
+POSTHOOK: query: select * from src_b
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@src_b
+#### A masked pattern was here ####
+0	val_0
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+367	val_367
+368	val_368
+369	val_369
+37	val_37
+373	val_373
+374	val_374
+375	val_375
+377	val_377
+378	val_378
+379	val_379
+382	val_382
+384	val_384
+386	val_386
+389	val_389
+392	val_392
+393	val_393
+394	val_394
+395	val_395
+396	val_396
+397	val_397
+399	val_399
+4	val_4
+400	val_400
+401	val_401
+402	val_402
+403	val_403
+404	val_404
+406	val_406
+407	val_407
+409	val_409
+41	val_41
+411	val_411
+413	val_413
+414	val_414
+417	val_417
+418	val_418
+419	val_419
+42	val_42
+421	val_421
+424	val_424
+427	val_427
+429	val_429
+43	val_43
+430	val_430
+431	val_431
+432	val_432
+435	val_435
+436	val_436
+437	val_437
+438	val_438
+439	val_439
+44	val_44
+443	val_443
+444	val_444
+446	val_446
+448	val_448
+449	val_449
+452	val_452
+453	val_453
+454	val_454
+455	val_455
+457	val_457
+458	val_458
+459	val_459
+460	val_460
+462	val_462
+463	val_463
+466	val_466
+467	val_467
+468	val_468
+469	val_469
+47	val_47
+470	val_470
+472	val_472
+475	val_475
+477	val_477
+478	val_478
+479	val_479
+480	val_480
+481	val_481
+482	val_482
+483	val_483
+484	val_484
+485	val_485
+487	val_487
+489	val_489
+490	val_490
+491	val_491
+492	val_492
+493	val_493
+494	val_494
+495	val_495
+496	val_496
+497	val_497
+498	val_498
+5	val_5
+51	val_51
+53	val_53
+54	val_54
+57	val_57
+58	val_58
+64	val_64
+65	val_65
+66	val_66
+67	val_67
+69	val_69
+70	val_70
+72	val_72
+74	val_74
+76	val_76
+77	val_77
+78	val_78
+8	val_8
+80	val_80
+82	val_82
+83	val_83
+84	val_84
+85	val_85
+86	val_86
+87	val_87
+9	val_9
+90	val_90
+92	val_92
+95	val_95
+96	val_96
+97	val_97
+98	val_98

http://git-wip-us.apache.org/repos/asf/hive/blob/7ea85a0a/ql/src/test/results/clientpositive/multi_insert_gby3.q.out
----------------------------------------------------------------------
diff --git a/ql/src/test/results/clientpositive/multi_insert_gby3.q.out b/ql/src/test/results/clientpositive/multi_insert_gby3.q.out
index b25ffcd..9fc5c2f 100644
--- a/ql/src/test/results/clientpositive/multi_insert_gby3.q.out
+++ b/ql/src/test/results/clientpositive/multi_insert_gby3.q.out
@@ -1748,7 +1748,7 @@ STAGE DEPENDENCIES:
   Stage-5 depends on stages: Stage-0
   Stage-1 depends on stages: Stage-4
   Stage-6 depends on stages: Stage-1
-  Stage-2 depends on stages: Stage-4
+  Stage-2 depends on stages: Stage-3
   Stage-7 depends on stages: Stage-2
 
 STAGE PLANS:

http://git-wip-us.apache.org/repos/asf/hive/blob/7ea85a0a/ql/src/test/results/clientpositive/multi_insert_mixed.q.out
----------------------------------------------------------------------
diff --git a/ql/src/test/results/clientpositive/multi_insert_mixed.q.out b/ql/src/test/results/clientpositive/multi_insert_mixed.q.out
index eb81b50..d6b1b13 100644
--- a/ql/src/test/results/clientpositive/multi_insert_mixed.q.out
+++ b/ql/src/test/results/clientpositive/multi_insert_mixed.q.out
@@ -43,7 +43,7 @@ STAGE DEPENDENCIES:
   Stage-7 depends on stages: Stage-6
   Stage-1 depends on stages: Stage-7
   Stage-8 depends on stages: Stage-1
-  Stage-2 depends on stages: Stage-7
+  Stage-2 depends on stages: Stage-3
   Stage-9 depends on stages: Stage-2
 
 STAGE PLANS:

http://git-wip-us.apache.org/repos/asf/hive/blob/7ea85a0a/ql/src/test/results/clientpositive/parallel_colstats.q.out
----------------------------------------------------------------------
diff --git a/ql/src/test/results/clientpositive/parallel_colstats.q.out b/ql/src/test/results/clientpositive/parallel_colstats.q.out
new file mode 100644
index 0000000..c851131
--- /dev/null
+++ b/ql/src/test/results/clientpositive/parallel_colstats.q.out
@@ -0,0 +1,1529 @@
+PREHOOK: query: create table if not exists src_a like src
+PREHOOK: type: CREATETABLE
+PREHOOK: Output: database:default
+PREHOOK: Output: default@src_a
+POSTHOOK: query: create table if not exists src_a like src
+POSTHOOK: type: CREATETABLE
+POSTHOOK: Output: database:default
+POSTHOOK: Output: default@src_a
+PREHOOK: query: create table if not exists src_b like src
+PREHOOK: type: CREATETABLE
+PREHOOK: Output: database:default
+PREHOOK: Output: default@src_b
+POSTHOOK: query: create table if not exists src_b like src
+POSTHOOK: type: CREATETABLE
+POSTHOOK: Output: database:default
+POSTHOOK: Output: default@src_b
+PREHOOK: query: explain
+from (select key, value from src group by key, value) s
+insert overwrite table src_a select s.key, s.value group by s.key, s.value
+insert overwrite table src_b select s.key, s.value group by s.key, s.value
+PREHOOK: type: QUERY
+POSTHOOK: query: explain
+from (select key, value from src group by key, value) s
+insert overwrite table src_a select s.key, s.value group by s.key, s.value
+insert overwrite table src_b select s.key, s.value group by s.key, s.value
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-2 is a root stage
+  Stage-3 depends on stages: Stage-2
+  Stage-0 depends on stages: Stage-3
+  Stage-4 depends on stages: Stage-0
+  Stage-8 depends on stages: Stage-4, Stage-5, Stage-6, Stage-7
+  Stage-9 depends on stages: Stage-4, Stage-5, Stage-6, Stage-7
+  Stage-5 depends on stages: Stage-3
+  Stage-1 depends on stages: Stage-3
+  Stage-6 depends on stages: Stage-1
+  Stage-7 depends on stages: Stage-3
+
+STAGE PLANS:
+  Stage: Stage-2
+    Map Reduce
+      Map Operator Tree:
+          TableScan
+            alias: src
+            Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
+            Select Operator
+              expressions: key (type: string), value (type: string)
+              outputColumnNames: key, value
+              Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
+              Group By Operator
+                keys: key (type: string), value (type: string)
+                mode: hash
+                outputColumnNames: _col0, _col1
+                Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
+                Reduce Output Operator
+                  key expressions: _col0 (type: string), _col1 (type: string)
+                  sort order: ++
+                  Map-reduce partition columns: _col0 (type: string), _col1 (type: string)
+                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
+      Reduce Operator Tree:
+        Group By Operator
+          keys: KEY._col0 (type: string), KEY._col1 (type: string)
+          mode: mergepartial
+          outputColumnNames: _col0, _col1
+          Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+          File Output Operator
+            compressed: false
+            table:
+                input format: org.apache.hadoop.mapred.SequenceFileInputFormat
+                output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
+                serde: org.apache.hadoop.hive.serde2.lazybinary.LazyBinarySerDe
+
+  Stage: Stage-3
+    Map Reduce
+      Map Operator Tree:
+          TableScan
+            Reduce Output Operator
+              key expressions: _col0 (type: string), _col1 (type: string)
+              sort order: ++
+              Map-reduce partition columns: _col0 (type: string), _col1 (type: string)
+              Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+      Reduce Operator Tree:
+        Forward
+          Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+          Group By Operator
+            keys: KEY._col0 (type: string), KEY._col1 (type: string)
+            mode: complete
+            outputColumnNames: _col0, _col1
+            Statistics: Num rows: 125 Data size: 1328 Basic stats: COMPLETE Column stats: NONE
+            File Output Operator
+              compressed: false
+              Statistics: Num rows: 125 Data size: 1328 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.src_a
+            Select Operator
+              expressions: _col0 (type: string), _col1 (type: string)
+              outputColumnNames: key, value
+              Statistics: Num rows: 125 Data size: 1328 Basic stats: COMPLETE Column stats: NONE
+              Group By Operator
+                aggregations: compute_stats(key, 16), compute_stats(value, 16)
+                mode: hash
+                outputColumnNames: _col0, _col1
+                Statistics: Num rows: 1 Data size: 984 Basic stats: COMPLETE Column stats: NONE
+                File Output Operator
+                  compressed: false
+                  table:
+                      input format: org.apache.hadoop.mapred.SequenceFileInputFormat
+                      output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
+                      serde: org.apache.hadoop.hive.serde2.lazybinary.LazyBinarySerDe
+          Group By Operator
+            keys: KEY._col0 (type: string), KEY._col1 (type: string)
+            mode: complete
+            outputColumnNames: _col0, _col1
+            Statistics: Num rows: 125 Data size: 1328 Basic stats: COMPLETE Column stats: NONE
+            File Output Operator
+              compressed: false
+              Statistics: Num rows: 125 Data size: 1328 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.src_b
+            Select Operator
+              expressions: _col0 (type: string), _col1 (type: string)
+              outputColumnNames: key, value
+              Statistics: Num rows: 125 Data size: 1328 Basic stats: COMPLETE Column stats: NONE
+              Group By Operator
+                aggregations: compute_stats(key, 16), compute_stats(value, 16)
+                mode: hash
+                outputColumnNames: _col0, _col1
+                Statistics: Num rows: 1 Data size: 984 Basic stats: COMPLETE Column stats: NONE
+                File Output Operator
+                  compressed: false
+                  table:
+                      input format: org.apache.hadoop.mapred.SequenceFileInputFormat
+                      output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
+                      serde: org.apache.hadoop.hive.serde2.lazybinary.LazyBinarySerDe
+
+  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.src_a
+
+  Stage: Stage-4
+    Stats-Aggr Operator
+
+  Stage: Stage-8
+    Column Stats Work
+      Column Stats Desc:
+          Columns: key, value
+          Column Types: string, string
+          Table: default.src_a
+
+  Stage: Stage-9
+    Column Stats Work
+      Column Stats Desc:
+          Columns: key, value
+          Column Types: string, string
+          Table: default.src_b
+
+  Stage: Stage-5
+    Map Reduce
+      Map Operator Tree:
+          TableScan
+            Reduce Output Operator
+              sort order: 
+              Statistics: Num rows: 1 Data size: 984 Basic stats: COMPLETE Column stats: NONE
+              value expressions: _col0 (type: struct<columntype:string,maxlength:bigint,sumlength:bigint,count:bigint,countnulls:bigint,bitvector:string,numbitvectors:int>), _col1 (type: struct<columntype:string,maxlength:bigint,sumlength:bigint,count:bigint,countnulls:bigint,bitvector:string,numbitvectors:int>)
+      Reduce Operator Tree:
+        Group By Operator
+          aggregations: compute_stats(VALUE._col0), compute_stats(VALUE._col1)
+          mode: mergepartial
+          outputColumnNames: _col0, _col1
+          Statistics: Num rows: 1 Data size: 984 Basic stats: COMPLETE Column stats: NONE
+          File Output Operator
+            compressed: false
+            Statistics: Num rows: 1 Data size: 984 Basic stats: COMPLETE Column stats: NONE
+            table:
+                input format: org.apache.hadoop.mapred.SequenceFileInputFormat
+                output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
+                serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+
+  Stage: Stage-1
+    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.src_b
+
+  Stage: Stage-6
+    Stats-Aggr Operator
+
+  Stage: Stage-7
+    Map Reduce
+      Map Operator Tree:
+          TableScan
+            Reduce Output Operator
+              sort order: 
+              Statistics: Num rows: 1 Data size: 984 Basic stats: COMPLETE Column stats: NONE
+              value expressions: _col0 (type: struct<columntype:string,maxlength:bigint,sumlength:bigint,count:bigint,countnulls:bigint,bitvector:string,numbitvectors:int>), _col1 (type: struct<columntype:string,maxlength:bigint,sumlength:bigint,count:bigint,countnulls:bigint,bitvector:string,numbitvectors:int>)
+      Reduce Operator Tree:
+        Group By Operator
+          aggregations: compute_stats(VALUE._col0), compute_stats(VALUE._col1)
+          mode: mergepartial
+          outputColumnNames: _col0, _col1
+          Statistics: Num rows: 1 Data size: 984 Basic stats: COMPLETE Column stats: NONE
+          File Output Operator
+            compressed: false
+            Statistics: Num rows: 1 Data size: 984 Basic stats: COMPLETE Column stats: NONE
+            table:
+                input format: org.apache.hadoop.mapred.SequenceFileInputFormat
+                output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
+                serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+
+PREHOOK: query: from (select key, value from src group by key, value) s
+insert overwrite table src_a select s.key, s.value group by s.key, s.value
+insert overwrite table src_b select s.key, s.value group by s.key, s.value
+PREHOOK: type: QUERY
+PREHOOK: Input: default@src
+PREHOOK: Output: default@src_a
+PREHOOK: Output: default@src_b
+POSTHOOK: query: from (select key, value from src group by key, value) s
+insert overwrite table src_a select s.key, s.value group by s.key, s.value
+insert overwrite table src_b select s.key, s.value group by s.key, s.value
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@src
+POSTHOOK: Output: default@src_a
+POSTHOOK: Output: default@src_b
+POSTHOOK: Lineage: src_a.key SIMPLE [(src)src.FieldSchema(name:key, type:string, comment:default), ]
+POSTHOOK: Lineage: src_a.value SIMPLE [(src)src.FieldSchema(name:value, type:string, comment:default), ]
+POSTHOOK: Lineage: src_b.key SIMPLE [(src)src.FieldSchema(name:key, type:string, comment:default), ]
+POSTHOOK: Lineage: src_b.value SIMPLE [(src)src.FieldSchema(name:value, type:string, comment:default), ]
+PREHOOK: query: select * from src_a
+PREHOOK: type: QUERY
+PREHOOK: Input: default@src_a
+#### A masked pattern was here ####
+POSTHOOK: query: select * from src_a
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@src_a
+#### A masked pattern was here ####
+0	val_0
+10	val_10
+100	val_100
+103	val_103
+104	val_104
+105	val_105
+11	val_11
+111	val_111
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+114	val_114
+116	val_116
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+12	val_12
+120	val_120
+125	val_125
+126	val_126
+128	val_128
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+4	val_4
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+497	val_497
+498	val_498
+5	val_5
+51	val_51
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+54	val_54
+57	val_57
+58	val_58
+64	val_64
+65	val_65
+66	val_66
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+69	val_69
+70	val_70
+72	val_72
+74	val_74
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+8	val_8
+80	val_80
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+84	val_84
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+9	val_9
+90	val_90
+92	val_92
+95	val_95
+96	val_96
+97	val_97
+98	val_98
+PREHOOK: query: select * from src_b
+PREHOOK: type: QUERY
+PREHOOK: Input: default@src_b
+#### A masked pattern was here ####
+POSTHOOK: query: select * from src_b
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@src_b
+#### A masked pattern was here ####
+0	val_0
+10	val_10
+100	val_100
+103	val_103
+104	val_104
+105	val_105
+11	val_11
+111	val_111
+113	val_113
+114	val_114
+116	val_116
+118	val_118
+119	val_119
+12	val_12
+120	val_120
+125	val_125
+126	val_126
+128	val_128
+129	val_129
+131	val_131
+133	val_133
+134	val_134
+136	val_136
+137	val_137
+138	val_138
+143	val_143
+145	val_145
+146	val_146
+149	val_149
+15	val_15
+150	val_150
+152	val_152
+153	val_153
+155	val_155
+156	val_156
+157	val_157
+158	val_158
+160	val_160
+162	val_162
+163	val_163
+164	val_164
+165	val_165
+166	val_166
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+169	val_169
+17	val_17
+170	val_170
+172	val_172
+174	val_174
+175	val_175
+176	val_176
+177	val_177
+178	val_178
+179	val_179
+18	val_18
+180	val_180
+181	val_181
+183	val_183
+186	val_186
+187	val_187
+189	val_189
+19	val_19
+190	val_190
+191	val_191
+192	val_192
+193	val_193
+194	val_194
+195	val_195
+196	val_196
+197	val_197
+199	val_199
+2	val_2
+20	val_20
+200	val_200
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+202	val_202
+203	val_203
+205	val_205
+207	val_207
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+213	val_213
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+216	val_216
+217	val_217
+218	val_218
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+221	val_221
+222	val_222
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+224	val_224
+226	val_226
+228	val_228
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+239	val_239
+24	val_24
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+249	val_249
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+257	val_257
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+26	val_26
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+27	val_27
+272	val_272
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+28	val_28
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+33	val_33
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+35	val_35
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+4	val_4
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+42	val_42
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+53	val_53
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+58	val_58
+64	val_64
+65	val_65
+66	val_66
+67	val_67
+69	val_69
+70	val_70
+72	val_72
+74	val_74
+76	val_76
+77	val_77
+78	val_78
+8	val_8
+80	val_80
+82	val_82
+83	val_83
+84	val_84
+85	val_85
+86	val_86
+87	val_87
+9	val_9
+90	val_90
+92	val_92
+95	val_95
+96	val_96
+97	val_97
+98	val_98
+PREHOOK: query: from (select key, value from src group by key, value) s
+insert overwrite table src_a select s.key, s.value group by s.key, s.value
+insert overwrite table src_b select s.key, s.value group by s.key, s.value
+PREHOOK: type: QUERY
+PREHOOK: Input: default@src
+PREHOOK: Output: default@src_a
+PREHOOK: Output: default@src_b
+POSTHOOK: query: from (select key, value from src group by key, value) s
+insert overwrite table src_a select s.key, s.value group by s.key, s.value
+insert overwrite table src_b select s.key, s.value group by s.key, s.value
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@src
+POSTHOOK: Output: default@src_a
+POSTHOOK: Output: default@src_b
+POSTHOOK: Lineage: src_a.key SIMPLE [(src)src.FieldSchema(name:key, type:string, comment:default), ]
+POSTHOOK: Lineage: src_a.value SIMPLE [(src)src.FieldSchema(name:value, type:string, comment:default), ]
+POSTHOOK: Lineage: src_b.key SIMPLE [(src)src.FieldSchema(name:key, type:string, comment:default), ]
+POSTHOOK: Lineage: src_b.value SIMPLE [(src)src.FieldSchema(name:value, type:string, comment:default), ]
+PREHOOK: query: select * from src_a
+PREHOOK: type: QUERY
+PREHOOK: Input: default@src_a
+#### A masked pattern was here ####
+POSTHOOK: query: select * from src_a
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@src_a
+#### A masked pattern was here ####
+0	val_0
+10	val_10
+100	val_100
+103	val_103
+104	val_104
+105	val_105
+11	val_11
+111	val_111
+113	val_113
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+116	val_116
+118	val_118
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+12	val_12
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+129	val_129
+131	val_131
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+136	val_136
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+143	val_143
+145	val_145
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+15	val_15
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+158	val_158
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+178	val_178
+179	val_179
+18	val_18
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+189	val_189
+19	val_19
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+193	val_193
+194	val_194
+195	val_195
+196	val_196
+197	val_197
+199	val_199
+2	val_2
+20	val_20
+200	val_200
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+202	val_202
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+207	val_207
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+213	val_213
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+216	val_216
+217	val_217
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+224	val_224
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+24	val_24
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+26	val_26
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+263	val_263
+265	val_265
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+27	val_27
+272	val_272
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+277	val_277
+278	val_278
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+41	val_41
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+5	val_5
+51	val_51
+53	val_53
+54	val_54
+57	val_57
+58	val_58
+64	val_64
+65	val_65
+66	val_66
+67	val_67
+69	val_69
+70	val_70
+72	val_72
+74	val_74
+76	val_76
+77	val_77
+78	val_78
+8	val_8
+80	val_80
+82	val_82
+83	val_83
+84	val_84
+85	val_85
+86	val_86
+87	val_87
+9	val_9
+90	val_90
+92	val_92
+95	val_95
+96	val_96
+97	val_97
+98	val_98
+PREHOOK: query: select * from src_b
+PREHOOK: type: QUERY
+PREHOOK: Input: default@src_b
+#### A masked pattern was here ####
+POSTHOOK: query: select * from src_b
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@src_b
+#### A masked pattern was here ####
+0	val_0
+10	val_10
+100	val_100
+103	val_103
+104	val_104
+105	val_105
+11	val_11
+111	val_111
+113	val_113
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+118	val_118
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+12	val_12
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+125	val_125
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+128	val_128
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+131	val_131
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+136	val_136
+137	val_137
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+143	val_143
+145	val_145
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+15	val_15
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+155	val_155
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+18	val_18
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+181	val_181
+183	val_183
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+19	val_19
+190	val_190
+191	val_191
+192	val_192
+193	val_193
+194	val_194
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+199	val_199
+2	val_2
+20	val_20
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+207	val_207
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+57	val_57
+58	val_58
+64	val_64
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+67	val_67
+69	val_69
+70	val_70
+72	val_72
+74	val_74
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+78	val_78
+8	val_8
+80	val_80
+82	val_82
+83	val_83
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+86	val_86
+87	val_87
+9	val_9
+90	val_90
+92	val_92
+95	val_95
+96	val_96
+97	val_97
+98	val_98


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