svn commit: r1628118 [4/4] - in /hive/trunk: common/src/java/org/apache/hadoop/hive/conf/ data/files/ ql/src/java/org/apache/hadoop/hive/ql/exec/ ql/src/java/org/apache/hadoop/hive/ql/exec/tez/ ql/src/java/org/apache/hadoop/hive/ql/optimizer/stats/anno...

Sun, 28 Sep 2014 22:39:07 -0700 

Modified: hive/trunk/ql/src/test/results/clientpositive/union_remove_20.q.out
URL: 
http://svn.apache.org/viewvc/hive/trunk/ql/src/test/results/clientpositive/union_remove_20.q.out?rev=1628118&r1=1628117&r2=1628118&view=diff
==============================================================================
--- hive/trunk/ql/src/test/results/clientpositive/union_remove_20.q.out 
(original)
+++ hive/trunk/ql/src/test/results/clientpositive/union_remove_20.q.out Mon Sep 
29 05:38:05 2014
@@ -83,12 +83,12 @@ STAGE PLANS:
                 keys: key (type: string)
                 mode: hash
                 outputColumnNames: _col0, _col1
-                Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column 
stats: NONE
                 Reduce Output Operator
                   key expressions: _col0 (type: string)
                   sort order: +
                   Map-reduce partition columns: _col0 (type: string)
-                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE 
Column stats: NONE
                   value expressions: _col1 (type: bigint)
       Reduce Operator Tree:
         Group By Operator
@@ -135,12 +135,12 @@ STAGE PLANS:
                 keys: key (type: string)
                 mode: hash
                 outputColumnNames: _col0, _col1
-                Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column 
stats: NONE
                 Reduce Output Operator
                   key expressions: _col0 (type: string)
                   sort order: +
                   Map-reduce partition columns: _col0 (type: string)
-                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE 
Column stats: NONE
                   value expressions: _col1 (type: bigint)
       Reduce Operator Tree:
         Group By Operator

Modified: hive/trunk/ql/src/test/results/clientpositive/union_remove_21.q.out
URL: 
http://svn.apache.org/viewvc/hive/trunk/ql/src/test/results/clientpositive/union_remove_21.q.out?rev=1628118&r1=1628117&r2=1628118&view=diff
==============================================================================
--- hive/trunk/ql/src/test/results/clientpositive/union_remove_21.q.out 
(original)
+++ hive/trunk/ql/src/test/results/clientpositive/union_remove_21.q.out Mon Sep 
29 05:38:05 2014
@@ -83,12 +83,12 @@ STAGE PLANS:
                 keys: key (type: string)
                 mode: hash
                 outputColumnNames: _col0, _col1
-                Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column 
stats: NONE
                 Reduce Output Operator
                   key expressions: _col0 (type: string)
                   sort order: +
                   Map-reduce partition columns: _col0 (type: string)
-                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE 
Column stats: NONE
                   value expressions: _col1 (type: bigint)
       Reduce Operator Tree:
         Group By Operator
@@ -135,12 +135,12 @@ STAGE PLANS:
                 keys: key (type: string)
                 mode: hash
                 outputColumnNames: _col0, _col1
-                Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column 
stats: NONE
                 Reduce Output Operator
                   key expressions: _col0 (type: string)
                   sort order: +
                   Map-reduce partition columns: _col0 (type: string)
-                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE 
Column stats: NONE
                   value expressions: _col1 (type: bigint)
       Reduce Operator Tree:
         Group By Operator

Modified: hive/trunk/ql/src/test/results/clientpositive/union_remove_22.q.out
URL: 
http://svn.apache.org/viewvc/hive/trunk/ql/src/test/results/clientpositive/union_remove_22.q.out?rev=1628118&r1=1628117&r2=1628118&view=diff
==============================================================================
--- hive/trunk/ql/src/test/results/clientpositive/union_remove_22.q.out 
(original)
+++ hive/trunk/ql/src/test/results/clientpositive/union_remove_22.q.out Mon Sep 
29 05:38:05 2014
@@ -81,12 +81,12 @@ STAGE PLANS:
                 keys: key (type: string)
                 mode: hash
                 outputColumnNames: _col0, _col1
-                Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column 
stats: NONE
                 Reduce Output Operator
                   key expressions: _col0 (type: string)
                   sort order: +
                   Map-reduce partition columns: _col0 (type: string)
-                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE 
Column stats: NONE
                   value expressions: _col1 (type: bigint)
       Reduce Operator Tree:
         Group By Operator
@@ -133,12 +133,12 @@ STAGE PLANS:
                 keys: key (type: string)
                 mode: hash
                 outputColumnNames: _col0, _col1
-                Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column 
stats: NONE
                 Reduce Output Operator
                   key expressions: _col0 (type: string)
                   sort order: +
                   Map-reduce partition columns: _col0 (type: string)
-                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE 
Column stats: NONE
                   value expressions: _col1 (type: bigint)
       Reduce Operator Tree:
         Group By Operator
@@ -277,12 +277,12 @@ STAGE PLANS:
                 keys: key (type: string)
                 mode: hash
                 outputColumnNames: _col0, _col1
-                Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column 
stats: NONE
                 Reduce Output Operator
                   key expressions: _col0 (type: string)
                   sort order: +
                   Map-reduce partition columns: _col0 (type: string)
-                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE 
Column stats: NONE
                   value expressions: _col1 (type: bigint)
       Reduce Operator Tree:
         Group By Operator
@@ -329,12 +329,12 @@ STAGE PLANS:
                 keys: key (type: string)
                 mode: hash
                 outputColumnNames: _col0, _col1
-                Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column 
stats: NONE
                 Reduce Output Operator
                   key expressions: _col0 (type: string)
                   sort order: +
                   Map-reduce partition columns: _col0 (type: string)
-                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE 
Column stats: NONE
                   value expressions: _col1 (type: bigint)
       Reduce Operator Tree:
         Group By Operator

Modified: hive/trunk/ql/src/test/results/clientpositive/union_remove_23.q.out
URL: 
http://svn.apache.org/viewvc/hive/trunk/ql/src/test/results/clientpositive/union_remove_23.q.out?rev=1628118&r1=1628117&r2=1628118&view=diff
==============================================================================
--- hive/trunk/ql/src/test/results/clientpositive/union_remove_23.q.out 
(original)
+++ hive/trunk/ql/src/test/results/clientpositive/union_remove_23.q.out Mon Sep 
29 05:38:05 2014
@@ -86,12 +86,12 @@ STAGE PLANS:
                 keys: key (type: string)
                 mode: hash
                 outputColumnNames: _col0, _col1
-                Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column 
stats: NONE
                 Reduce Output Operator
                   key expressions: _col0 (type: string)
                   sort order: +
                   Map-reduce partition columns: _col0 (type: string)
-                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE 
Column stats: NONE
                   value expressions: _col1 (type: bigint)
       Reduce Operator Tree:
         Group By Operator

Modified: hive/trunk/ql/src/test/results/clientpositive/union_remove_24.q.out
URL: 
http://svn.apache.org/viewvc/hive/trunk/ql/src/test/results/clientpositive/union_remove_24.q.out?rev=1628118&r1=1628117&r2=1628118&view=diff
==============================================================================
--- hive/trunk/ql/src/test/results/clientpositive/union_remove_24.q.out 
(original)
+++ hive/trunk/ql/src/test/results/clientpositive/union_remove_24.q.out Mon Sep 
29 05:38:05 2014
@@ -79,12 +79,12 @@ STAGE PLANS:
                 keys: key (type: string)
                 mode: hash
                 outputColumnNames: _col0, _col1
-                Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column 
stats: NONE
                 Reduce Output Operator
                   key expressions: _col0 (type: string)
                   sort order: +
                   Map-reduce partition columns: _col0 (type: string)
-                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE 
Column stats: NONE
                   value expressions: _col1 (type: bigint)
       Reduce Operator Tree:
         Group By Operator
@@ -131,12 +131,12 @@ STAGE PLANS:
                 keys: key (type: string)
                 mode: hash
                 outputColumnNames: _col0, _col1
-                Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column 
stats: NONE
                 Reduce Output Operator
                   key expressions: _col0 (type: string)
                   sort order: +
                   Map-reduce partition columns: _col0 (type: string)
-                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE 
Column stats: NONE
                   value expressions: _col1 (type: bigint)
       Reduce Operator Tree:
         Group By Operator

Modified: hive/trunk/ql/src/test/results/clientpositive/union_remove_25.q.out
URL: 
http://svn.apache.org/viewvc/hive/trunk/ql/src/test/results/clientpositive/union_remove_25.q.out?rev=1628118&r1=1628117&r2=1628118&view=diff
==============================================================================
--- hive/trunk/ql/src/test/results/clientpositive/union_remove_25.q.out 
(original)
+++ hive/trunk/ql/src/test/results/clientpositive/union_remove_25.q.out Mon Sep 
29 05:38:05 2014
@@ -97,12 +97,12 @@ STAGE PLANS:
                 keys: key (type: string)
                 mode: hash
                 outputColumnNames: _col0, _col1
-                Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column 
stats: NONE
                 Reduce Output Operator
                   key expressions: _col0 (type: string)
                   sort order: +
                   Map-reduce partition columns: _col0 (type: string)
-                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE 
Column stats: NONE
                   value expressions: _col1 (type: bigint)
       Reduce Operator Tree:
         Group By Operator
@@ -151,12 +151,12 @@ STAGE PLANS:
                 keys: key (type: string)
                 mode: hash
                 outputColumnNames: _col0, _col1
-                Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column 
stats: NONE
                 Reduce Output Operator
                   key expressions: _col0 (type: string)
                   sort order: +
                   Map-reduce partition columns: _col0 (type: string)
-                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE 
Column stats: NONE
                   value expressions: _col1 (type: bigint)
       Reduce Operator Tree:
         Group By Operator

Modified: hive/trunk/ql/src/test/results/clientpositive/union_remove_4.q.out
URL: 
http://svn.apache.org/viewvc/hive/trunk/ql/src/test/results/clientpositive/union_remove_4.q.out?rev=1628118&r1=1628117&r2=1628118&view=diff
==============================================================================
--- hive/trunk/ql/src/test/results/clientpositive/union_remove_4.q.out 
(original)
+++ hive/trunk/ql/src/test/results/clientpositive/union_remove_4.q.out Mon Sep 
29 05:38:05 2014
@@ -86,12 +86,12 @@ STAGE PLANS:
                 keys: key (type: string)
                 mode: hash
                 outputColumnNames: _col0, _col1
-                Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column 
stats: NONE
                 Reduce Output Operator
                   key expressions: _col0 (type: string)
                   sort order: +
                   Map-reduce partition columns: _col0 (type: string)
-                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE 
Column stats: NONE
                   value expressions: _col1 (type: bigint)
       Reduce Operator Tree:
         Group By Operator
@@ -177,12 +177,12 @@ STAGE PLANS:
                 keys: key (type: string)
                 mode: hash
                 outputColumnNames: _col0, _col1
-                Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column 
stats: NONE
                 Reduce Output Operator
                   key expressions: _col0 (type: string)
                   sort order: +
                   Map-reduce partition columns: _col0 (type: string)
-                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE 
Column stats: NONE
                   value expressions: _col1 (type: bigint)
       Reduce Operator Tree:
         Group By Operator

Modified: hive/trunk/ql/src/test/results/clientpositive/union_remove_5.q.out
URL: 
http://svn.apache.org/viewvc/hive/trunk/ql/src/test/results/clientpositive/union_remove_5.q.out?rev=1628118&r1=1628117&r2=1628118&view=diff
==============================================================================
--- hive/trunk/ql/src/test/results/clientpositive/union_remove_5.q.out 
(original)
+++ hive/trunk/ql/src/test/results/clientpositive/union_remove_5.q.out Mon Sep 
29 05:38:05 2014
@@ -163,12 +163,12 @@ STAGE PLANS:
                 keys: key (type: string)
                 mode: hash
                 outputColumnNames: _col0, _col1
-                Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column 
stats: NONE
                 Reduce Output Operator
                   key expressions: _col0 (type: string)
                   sort order: +
                   Map-reduce partition columns: _col0 (type: string)
-                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE 
Column stats: NONE
                   value expressions: _col1 (type: bigint)
       Reduce Operator Tree:
         Group By Operator

Modified: hive/trunk/ql/src/test/results/clientpositive/union_remove_6.q.out
URL: 
http://svn.apache.org/viewvc/hive/trunk/ql/src/test/results/clientpositive/union_remove_6.q.out?rev=1628118&r1=1628117&r2=1628118&view=diff
==============================================================================
--- hive/trunk/ql/src/test/results/clientpositive/union_remove_6.q.out 
(original)
+++ hive/trunk/ql/src/test/results/clientpositive/union_remove_6.q.out Mon Sep 
29 05:38:05 2014
@@ -85,12 +85,12 @@ STAGE PLANS:
                 keys: key (type: string)
                 mode: hash
                 outputColumnNames: _col0, _col1
-                Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column 
stats: NONE
                 Reduce Output Operator
                   key expressions: _col0 (type: string)
                   sort order: +
                   Map-reduce partition columns: _col0 (type: string)
-                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE 
Column stats: NONE
                   value expressions: _col1 (type: bigint)
       Reduce Operator Tree:
         Group By Operator
@@ -203,12 +203,12 @@ STAGE PLANS:
                 keys: key (type: string)
                 mode: hash
                 outputColumnNames: _col0, _col1
-                Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column 
stats: NONE
                 Reduce Output Operator
                   key expressions: _col0 (type: string)
                   sort order: +
                   Map-reduce partition columns: _col0 (type: string)
-                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE 
Column stats: NONE
                   value expressions: _col1 (type: bigint)
       Reduce Operator Tree:
         Group By Operator

Modified: hive/trunk/ql/src/test/results/clientpositive/union_remove_7.q.out
URL: 
http://svn.apache.org/viewvc/hive/trunk/ql/src/test/results/clientpositive/union_remove_7.q.out?rev=1628118&r1=1628117&r2=1628118&view=diff
==============================================================================
--- hive/trunk/ql/src/test/results/clientpositive/union_remove_7.q.out 
(original)
+++ hive/trunk/ql/src/test/results/clientpositive/union_remove_7.q.out Mon Sep 
29 05:38:05 2014
@@ -85,12 +85,12 @@ STAGE PLANS:
                 keys: key (type: string)
                 mode: hash
                 outputColumnNames: _col0, _col1
-                Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column 
stats: NONE
                 Reduce Output Operator
                   key expressions: _col0 (type: string)
                   sort order: +
                   Map-reduce partition columns: _col0 (type: string)
-                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE 
Column stats: NONE
                   value expressions: _col1 (type: bigint)
       Reduce Operator Tree:
         Group By Operator
@@ -137,12 +137,12 @@ STAGE PLANS:
                 keys: key (type: string)
                 mode: hash
                 outputColumnNames: _col0, _col1
-                Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column 
stats: NONE
                 Reduce Output Operator
                   key expressions: _col0 (type: string)
                   sort order: +
                   Map-reduce partition columns: _col0 (type: string)
-                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE 
Column stats: NONE
                   value expressions: _col1 (type: bigint)
       Reduce Operator Tree:
         Group By Operator

Modified: hive/trunk/ql/src/test/results/clientpositive/union_remove_8.q.out
URL: 
http://svn.apache.org/viewvc/hive/trunk/ql/src/test/results/clientpositive/union_remove_8.q.out?rev=1628118&r1=1628117&r2=1628118&view=diff
==============================================================================
--- hive/trunk/ql/src/test/results/clientpositive/union_remove_8.q.out 
(original)
+++ hive/trunk/ql/src/test/results/clientpositive/union_remove_8.q.out Mon Sep 
29 05:38:05 2014
@@ -121,12 +121,12 @@ STAGE PLANS:
                 keys: key (type: string)
                 mode: hash
                 outputColumnNames: _col0, _col1
-                Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column 
stats: NONE
                 Reduce Output Operator
                   key expressions: _col0 (type: string)
                   sort order: +
                   Map-reduce partition columns: _col0 (type: string)
-                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE 
Column stats: NONE
                   value expressions: _col1 (type: bigint)
       Reduce Operator Tree:
         Group By Operator

Modified: hive/trunk/ql/src/test/results/clientpositive/union_remove_9.q.out
URL: 
http://svn.apache.org/viewvc/hive/trunk/ql/src/test/results/clientpositive/union_remove_9.q.out?rev=1628118&r1=1628117&r2=1628118&view=diff
==============================================================================
--- hive/trunk/ql/src/test/results/clientpositive/union_remove_9.q.out 
(original)
+++ hive/trunk/ql/src/test/results/clientpositive/union_remove_9.q.out Mon Sep 
29 05:38:05 2014
@@ -183,12 +183,12 @@ STAGE PLANS:
                 keys: key (type: string)
                 mode: hash
                 outputColumnNames: _col0, _col1
-                Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column 
stats: NONE
                 Reduce Output Operator
                   key expressions: _col0 (type: string)
                   sort order: +
                   Map-reduce partition columns: _col0 (type: string)
-                  Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 
Column stats: NONE
+                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE 
Column stats: NONE
                   value expressions: _col1 (type: bigint)
       Reduce Operator Tree:
         Group By Operator

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