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From ser...@apache.org
Subject [21/50] [abbrv] hive git commit: HIVE-17536 : StatsUtil::getBasicStatForTable doesn't distinguish b/w absence of statistics or zero stats (Vineet Garg, reviewed by Ashutosh Chauhan)
Date Wed, 27 Sep 2017 20:22:56 GMT
http://git-wip-us.apache.org/repos/asf/hive/blob/6a99cf53/ql/src/test/results/clientpositive/llap/auto_sortmerge_join_5.q.out
----------------------------------------------------------------------
diff --git a/ql/src/test/results/clientpositive/llap/auto_sortmerge_join_5.q.out b/ql/src/test/results/clientpositive/llap/auto_sortmerge_join_5.q.out
index 7bab86f..68b69e8 100644
--- a/ql/src/test/results/clientpositive/llap/auto_sortmerge_join_5.q.out
+++ b/ql/src/test/results/clientpositive/llap/auto_sortmerge_join_5.q.out
@@ -82,16 +82,16 @@ STAGE PLANS:
             Map Operator Tree:
                 TableScan
                   alias: a
-                  Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE
                   GatherStats: false
                   Filter Operator
                     isSamplingPred: false
                     predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE
                     Select Operator
                       expressions: key (type: string)
                       outputColumnNames: _col0
-                      Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE
             Path -> Alias:
 #### A masked pattern was here ####
             Path -> Partition:
@@ -147,16 +147,16 @@ STAGE PLANS:
             Map Operator Tree:
                 TableScan
                   alias: b
-                  Statistics: Num rows: 27 Data size: 4968 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE
                   GatherStats: false
                   Filter Operator
                     isSamplingPred: false
                     predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 26 Data size: 4784 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE
                     Select Operator
                       expressions: key (type: string)
                       outputColumnNames: _col0
-                      Statistics: Num rows: 26 Data size: 4784 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE
                       Merge Join Operator
                         condition map:
                              Inner Join 0 to 1
@@ -164,7 +164,7 @@ STAGE PLANS:
                           0 _col0 (type: string)
                           1 _col0 (type: string)
                         Position of Big Table: 1
-                        Statistics: Num rows: 28 Data size: 5262 Basic stats: COMPLETE Column stats: NONE
+                        Statistics: Num rows: 1 Data size: 202 Basic stats: COMPLETE Column stats: NONE
                         Group By Operator
                           aggregations: count()
                           mode: hash
@@ -299,16 +299,16 @@ STAGE PLANS:
             Map Operator Tree:
                 TableScan
                   alias: b
-                  Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE
                   GatherStats: false
                   Filter Operator
                     isSamplingPred: false
                     predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE
                     Select Operator
                       expressions: key (type: string)
                       outputColumnNames: _col0
-                      Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE
             Path -> Alias:
 #### A masked pattern was here ####
             Path -> Partition:
@@ -364,16 +364,16 @@ STAGE PLANS:
             Map Operator Tree:
                 TableScan
                   alias: a
-                  Statistics: Num rows: 27 Data size: 4968 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE
                   GatherStats: false
                   Filter Operator
                     isSamplingPred: false
                     predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 26 Data size: 4784 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE
                     Select Operator
                       expressions: key (type: string)
                       outputColumnNames: _col0
-                      Statistics: Num rows: 26 Data size: 4784 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE
                       Merge Join Operator
                         condition map:
                              Inner Join 0 to 1
@@ -381,7 +381,7 @@ STAGE PLANS:
                           0 _col0 (type: string)
                           1 _col0 (type: string)
                         Position of Big Table: 0
-                        Statistics: Num rows: 28 Data size: 5262 Basic stats: COMPLETE Column stats: NONE
+                        Statistics: Num rows: 1 Data size: 202 Basic stats: COMPLETE Column stats: NONE
                         Group By Operator
                           aggregations: count()
                           mode: hash
@@ -517,27 +517,27 @@ STAGE PLANS:
             Map Operator Tree:
                 TableScan
                   alias: a
-                  Statistics: Num rows: 27 Data size: 4968 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE
                   GatherStats: false
                   Filter Operator
                     isSamplingPred: false
                     predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 26 Data size: 4784 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE
                     Select Operator
                       expressions: key (type: string)
                       outputColumnNames: _col0
-                      Statistics: Num rows: 26 Data size: 4784 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE
                       Map Join Operator
                         condition map:
                              Inner Join 0 to 1
-                        Estimated key counts: Map 3 => 2
+                        Estimated key counts: Map 3 => 1
                         keys:
                           0 _col0 (type: string)
                           1 _col0 (type: string)
                         input vertices:
                           1 Map 3
                         Position of Big Table: 0
-                        Statistics: Num rows: 28 Data size: 5262 Basic stats: COMPLETE Column stats: NONE
+                        Statistics: Num rows: 1 Data size: 202 Basic stats: COMPLETE Column stats: NONE
                         Group By Operator
                           aggregations: count()
                           mode: hash
@@ -609,22 +609,22 @@ STAGE PLANS:
             Map Operator Tree:
                 TableScan
                   alias: b
-                  Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE
                   GatherStats: false
                   Filter Operator
                     isSamplingPred: false
                     predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE
                     Select Operator
                       expressions: key (type: string)
                       outputColumnNames: _col0
-                      Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE
                       Reduce Output Operator
                         key expressions: _col0 (type: string)
                         null sort order: a
                         sort order: +
                         Map-reduce partition columns: _col0 (type: string)
-                        Statistics: Num rows: 2 Data size: 368 Basic stats: COMPLETE Column stats: NONE
+                        Statistics: Num rows: 1 Data size: 184 Basic stats: COMPLETE Column stats: NONE
                         tag: 1
                         auto parallelism: true
             Execution mode: llap

http://git-wip-us.apache.org/repos/asf/hive/blob/6a99cf53/ql/src/test/results/clientpositive/llap/bucketmapjoin1.q.out
----------------------------------------------------------------------
diff --git a/ql/src/test/results/clientpositive/llap/bucketmapjoin1.q.out b/ql/src/test/results/clientpositive/llap/bucketmapjoin1.q.out
index e1373c4..c6ab95c 100644
--- a/ql/src/test/results/clientpositive/llap/bucketmapjoin1.q.out
+++ b/ql/src/test/results/clientpositive/llap/bucketmapjoin1.q.out
@@ -406,22 +406,22 @@ STAGE PLANS:
             Map Operator Tree:
                 TableScan
                   alias: a
-                  Statistics: Num rows: 26 Data size: 4888 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 188 Basic stats: COMPLETE Column stats: NONE
                   GatherStats: false
                   Filter Operator
                     isSamplingPred: false
                     predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 25 Data size: 4700 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 188 Basic stats: COMPLETE Column stats: NONE
                     Select Operator
                       expressions: key (type: int), value (type: string)
                       outputColumnNames: _col0, _col1
-                      Statistics: Num rows: 25 Data size: 4700 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 188 Basic stats: COMPLETE Column stats: NONE
                       Reduce Output Operator
                         key expressions: _col0 (type: int)
                         null sort order: a
                         sort order: +
                         Map-reduce partition columns: _col0 (type: int)
-                        Statistics: Num rows: 25 Data size: 4700 Basic stats: COMPLETE Column stats: NONE
+                        Statistics: Num rows: 1 Data size: 188 Basic stats: COMPLETE Column stats: NONE
                         tag: 0
                         value expressions: _col1 (type: string)
                         auto parallelism: true
@@ -772,22 +772,22 @@ STAGE PLANS:
             Map Operator Tree:
                 TableScan
                   alias: a
-                  Statistics: Num rows: 26 Data size: 4888 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 188 Basic stats: COMPLETE Column stats: NONE
                   GatherStats: false
                   Filter Operator
                     isSamplingPred: false
                     predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 25 Data size: 4700 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 188 Basic stats: COMPLETE Column stats: NONE
                     Select Operator
                       expressions: key (type: int), value (type: string)
                       outputColumnNames: _col0, _col1
-                      Statistics: Num rows: 25 Data size: 4700 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 188 Basic stats: COMPLETE Column stats: NONE
                       Reduce Output Operator
                         key expressions: _col0 (type: int)
                         null sort order: a
                         sort order: +
                         Map-reduce partition columns: _col0 (type: int)
-                        Statistics: Num rows: 25 Data size: 4700 Basic stats: COMPLETE Column stats: NONE
+                        Statistics: Num rows: 1 Data size: 188 Basic stats: COMPLETE Column stats: NONE
                         tag: 0
                         value expressions: _col1 (type: string)
                         auto parallelism: true

http://git-wip-us.apache.org/repos/asf/hive/blob/6a99cf53/ql/src/test/results/clientpositive/llap/bucketmapjoin4.q.out
----------------------------------------------------------------------
diff --git a/ql/src/test/results/clientpositive/llap/bucketmapjoin4.q.out b/ql/src/test/results/clientpositive/llap/bucketmapjoin4.q.out
index dd67a55..b871c93 100644
--- a/ql/src/test/results/clientpositive/llap/bucketmapjoin4.q.out
+++ b/ql/src/test/results/clientpositive/llap/bucketmapjoin4.q.out
@@ -142,22 +142,22 @@ STAGE PLANS:
             Map Operator Tree:
                 TableScan
                   alias: a
-                  Statistics: Num rows: 26 Data size: 4888 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 188 Basic stats: COMPLETE Column stats: NONE
                   GatherStats: false
                   Filter Operator
                     isSamplingPred: false
                     predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 25 Data size: 4700 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 188 Basic stats: COMPLETE Column stats: NONE
                     Select Operator
                       expressions: key (type: int), value (type: string)
                       outputColumnNames: _col0, _col1
-                      Statistics: Num rows: 25 Data size: 4700 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 188 Basic stats: COMPLETE Column stats: NONE
                       Reduce Output Operator
                         key expressions: _col0 (type: int)
                         null sort order: a
                         sort order: +
                         Map-reduce partition columns: _col0 (type: int)
-                        Statistics: Num rows: 25 Data size: 4700 Basic stats: COMPLETE Column stats: NONE
+                        Statistics: Num rows: 1 Data size: 188 Basic stats: COMPLETE Column stats: NONE
                         tag: 0
                         value expressions: _col1 (type: string)
                         auto parallelism: true
@@ -218,22 +218,22 @@ STAGE PLANS:
             Map Operator Tree:
                 TableScan
                   alias: b
-                  Statistics: Num rows: 26 Data size: 4888 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 188 Basic stats: COMPLETE Column stats: NONE
                   GatherStats: false
                   Filter Operator
                     isSamplingPred: false
                     predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 25 Data size: 4700 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 188 Basic stats: COMPLETE Column stats: NONE
                     Select Operator
                       expressions: key (type: int), value (type: string)
                       outputColumnNames: _col0, _col1
-                      Statistics: Num rows: 25 Data size: 4700 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 188 Basic stats: COMPLETE Column stats: NONE
                       Reduce Output Operator
                         key expressions: _col0 (type: int)
                         null sort order: a
                         sort order: +
                         Map-reduce partition columns: _col0 (type: int)
-                        Statistics: Num rows: 25 Data size: 4700 Basic stats: COMPLETE Column stats: NONE
+                        Statistics: Num rows: 1 Data size: 188 Basic stats: COMPLETE Column stats: NONE
                         tag: 1
                         value expressions: _col1 (type: string)
                         auto parallelism: true
@@ -302,17 +302,17 @@ STAGE PLANS:
                   1 _col0 (type: int)
                 outputColumnNames: _col0, _col1, _col3
                 Position of Big Table: 0
-                Statistics: Num rows: 27 Data size: 5170 Basic stats: COMPLETE Column stats: NONE
+                Statistics: Num rows: 1 Data size: 206 Basic stats: COMPLETE Column stats: NONE
                 Select Operator
                   expressions: UDFToString(_col0) (type: string), _col1 (type: string), _col3 (type: string)
                   outputColumnNames: _col0, _col1, _col2
-                  Statistics: Num rows: 27 Data size: 5170 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 206 Basic stats: COMPLETE Column stats: NONE
                   File Output Operator
                     compressed: false
                     GlobalTableId: 1
 #### A masked pattern was here ####
                     NumFilesPerFileSink: 1
-                    Statistics: Num rows: 27 Data size: 5170 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 206 Basic stats: COMPLETE Column stats: NONE
 #### A masked pattern was here ####
                     table:
                         input format: org.apache.hadoop.mapred.TextInputFormat
@@ -498,22 +498,22 @@ STAGE PLANS:
             Map Operator Tree:
                 TableScan
                   alias: a
-                  Statistics: Num rows: 26 Data size: 4888 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 188 Basic stats: COMPLETE Column stats: NONE
                   GatherStats: false
                   Filter Operator
                     isSamplingPred: false
                     predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 25 Data size: 4700 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 188 Basic stats: COMPLETE Column stats: NONE
                     Select Operator
                       expressions: key (type: int), value (type: string)
                       outputColumnNames: _col0, _col1
-                      Statistics: Num rows: 25 Data size: 4700 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 188 Basic stats: COMPLETE Column stats: NONE
                       Reduce Output Operator
                         key expressions: _col0 (type: int)
                         null sort order: a
                         sort order: +
                         Map-reduce partition columns: _col0 (type: int)
-                        Statistics: Num rows: 25 Data size: 4700 Basic stats: COMPLETE Column stats: NONE
+                        Statistics: Num rows: 1 Data size: 188 Basic stats: COMPLETE Column stats: NONE
                         tag: 0
                         value expressions: _col1 (type: string)
                         auto parallelism: true
@@ -574,22 +574,22 @@ STAGE PLANS:
             Map Operator Tree:
                 TableScan
                   alias: b
-                  Statistics: Num rows: 26 Data size: 4888 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 188 Basic stats: COMPLETE Column stats: NONE
                   GatherStats: false
                   Filter Operator
                     isSamplingPred: false
                     predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 25 Data size: 4700 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 188 Basic stats: COMPLETE Column stats: NONE
                     Select Operator
                       expressions: key (type: int), value (type: string)
                       outputColumnNames: _col0, _col1
-                      Statistics: Num rows: 25 Data size: 4700 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 188 Basic stats: COMPLETE Column stats: NONE
                       Reduce Output Operator
                         key expressions: _col0 (type: int)
                         null sort order: a
                         sort order: +
                         Map-reduce partition columns: _col0 (type: int)
-                        Statistics: Num rows: 25 Data size: 4700 Basic stats: COMPLETE Column stats: NONE
+                        Statistics: Num rows: 1 Data size: 188 Basic stats: COMPLETE Column stats: NONE
                         tag: 1
                         value expressions: _col1 (type: string)
                         auto parallelism: true
@@ -658,17 +658,17 @@ STAGE PLANS:
                   1 _col0 (type: int)
                 outputColumnNames: _col0, _col1, _col3
                 Position of Big Table: 0
-                Statistics: Num rows: 27 Data size: 5170 Basic stats: COMPLETE Column stats: NONE
+                Statistics: Num rows: 1 Data size: 206 Basic stats: COMPLETE Column stats: NONE
                 Select Operator
                   expressions: UDFToString(_col0) (type: string), _col1 (type: string), _col3 (type: string)
                   outputColumnNames: _col0, _col1, _col2
-                  Statistics: Num rows: 27 Data size: 5170 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 206 Basic stats: COMPLETE Column stats: NONE
                   File Output Operator
                     compressed: false
                     GlobalTableId: 1
 #### A masked pattern was here ####
                     NumFilesPerFileSink: 1
-                    Statistics: Num rows: 27 Data size: 5170 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 206 Basic stats: COMPLETE Column stats: NONE
 #### A masked pattern was here ####
                     table:
                         input format: org.apache.hadoop.mapred.TextInputFormat

http://git-wip-us.apache.org/repos/asf/hive/blob/6a99cf53/ql/src/test/results/clientpositive/llap/column_table_stats.q.out
----------------------------------------------------------------------
diff --git a/ql/src/test/results/clientpositive/llap/column_table_stats.q.out b/ql/src/test/results/clientpositive/llap/column_table_stats.q.out
index c397f80..9aad454 100644
--- a/ql/src/test/results/clientpositive/llap/column_table_stats.q.out
+++ b/ql/src/test/results/clientpositive/llap/column_table_stats.q.out
@@ -73,13 +73,13 @@ STAGE PLANS:
             Map Operator Tree:
                 TableScan
                   alias: s
-                  Statistics: Num rows: 29 Data size: 10672 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 368 Basic stats: COMPLETE Column stats: NONE
                   Statistics Aggregation Key Prefix: default.s/
                   GatherStats: true
                   Select Operator
                     expressions: key (type: string), value (type: string)
                     outputColumnNames: key, value
-                    Statistics: Num rows: 29 Data size: 10672 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 368 Basic stats: COMPLETE Column stats: NONE
                     Group By Operator
                       aggregations: compute_stats(key, 'hll'), compute_stats(value, 'hll')
                       mode: hash

http://git-wip-us.apache.org/repos/asf/hive/blob/6a99cf53/ql/src/test/results/clientpositive/llap/correlationoptimizer4.q.out
----------------------------------------------------------------------
diff --git a/ql/src/test/results/clientpositive/llap/correlationoptimizer4.q.out b/ql/src/test/results/clientpositive/llap/correlationoptimizer4.q.out
index edf8506..3c9b6fc 100644
--- a/ql/src/test/results/clientpositive/llap/correlationoptimizer4.q.out
+++ b/ql/src/test/results/clientpositive/llap/correlationoptimizer4.q.out
@@ -76,57 +76,57 @@ STAGE PLANS:
             Map Operator Tree:
                 TableScan
                   alias: x
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Filter Operator
                     predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                     Select Operator
                       expressions: key (type: int)
                       outputColumnNames: _col0
-                      Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                       Reduce Output Operator
                         key expressions: _col0 (type: int)
                         sort order: +
                         Map-reduce partition columns: _col0 (type: int)
-                        Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                        Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
             Execution mode: llap
             LLAP IO: no inputs
         Map 5 
             Map Operator Tree:
                 TableScan
                   alias: y
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Filter Operator
                     predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                     Select Operator
                       expressions: key (type: int)
                       outputColumnNames: _col0
-                      Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                       Reduce Output Operator
                         key expressions: _col0 (type: int)
                         sort order: +
                         Map-reduce partition columns: _col0 (type: int)
-                        Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                        Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
             Execution mode: llap
             LLAP IO: no inputs
         Map 6 
             Map Operator Tree:
                 TableScan
                   alias: z
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Filter Operator
                     predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                     Select Operator
                       expressions: key (type: int)
                       outputColumnNames: _col0
-                      Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                       Reduce Output Operator
                         key expressions: _col0 (type: int)
                         sort order: +
                         Map-reduce partition columns: _col0 (type: int)
-                        Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                        Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
             Execution mode: llap
             LLAP IO: no inputs
         Reducer 2 
@@ -141,18 +141,18 @@ STAGE PLANS:
                   1 _col0 (type: int)
                   2 _col0 (type: int)
                 outputColumnNames: _col1
-                Statistics: Num rows: 15 Data size: 61 Basic stats: COMPLETE Column stats: NONE
+                Statistics: Num rows: 2 Data size: 8 Basic stats: COMPLETE Column stats: NONE
                 Group By Operator
                   aggregations: count()
                   keys: _col1 (type: int)
                   mode: hash
                   outputColumnNames: _col0, _col1
-                  Statistics: Num rows: 15 Data size: 61 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 2 Data size: 8 Basic stats: COMPLETE Column stats: NONE
                   Reduce Output Operator
                     key expressions: _col0 (type: int)
                     sort order: +
                     Map-reduce partition columns: _col0 (type: int)
-                    Statistics: Num rows: 15 Data size: 61 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 2 Data size: 8 Basic stats: COMPLETE Column stats: NONE
                     value expressions: _col1 (type: bigint)
         Reducer 3 
             Execution mode: llap
@@ -162,11 +162,11 @@ STAGE PLANS:
                 keys: KEY._col0 (type: int)
                 mode: mergepartial
                 outputColumnNames: _col0, _col1
-                Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                 Select Operator
                   expressions: hash(_col0) (type: int), hash(_col1) (type: int)
                   outputColumnNames: _col0, _col1
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Group By Operator
                     aggregations: sum(_col0), sum(_col1)
                     mode: hash
@@ -247,57 +247,57 @@ STAGE PLANS:
             Map Operator Tree:
                 TableScan
                   alias: x
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Filter Operator
                     predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                     Select Operator
                       expressions: key (type: int)
                       outputColumnNames: _col0
-                      Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                       Reduce Output Operator
                         key expressions: _col0 (type: int)
                         sort order: +
                         Map-reduce partition columns: _col0 (type: int)
-                        Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                        Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
             Execution mode: llap
             LLAP IO: no inputs
         Map 5 
             Map Operator Tree:
                 TableScan
                   alias: y
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Filter Operator
                     predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                     Select Operator
                       expressions: key (type: int)
                       outputColumnNames: _col0
-                      Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                       Reduce Output Operator
                         key expressions: _col0 (type: int)
                         sort order: +
                         Map-reduce partition columns: _col0 (type: int)
-                        Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                        Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
             Execution mode: llap
             LLAP IO: no inputs
         Map 6 
             Map Operator Tree:
                 TableScan
                   alias: z
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Filter Operator
                     predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                     Select Operator
                       expressions: key (type: int)
                       outputColumnNames: _col0
-                      Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                       Reduce Output Operator
                         key expressions: _col0 (type: int)
                         sort order: +
                         Map-reduce partition columns: _col0 (type: int)
-                        Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                        Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
             Execution mode: llap
             LLAP IO: no inputs
         Reducer 2 
@@ -312,18 +312,18 @@ STAGE PLANS:
                   1 _col0 (type: int)
                   2 _col0 (type: int)
                 outputColumnNames: _col1
-                Statistics: Num rows: 15 Data size: 61 Basic stats: COMPLETE Column stats: NONE
+                Statistics: Num rows: 2 Data size: 8 Basic stats: COMPLETE Column stats: NONE
                 Group By Operator
                   aggregations: count()
                   keys: _col1 (type: int)
                   mode: hash
                   outputColumnNames: _col0, _col1
-                  Statistics: Num rows: 15 Data size: 61 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 2 Data size: 8 Basic stats: COMPLETE Column stats: NONE
                   Reduce Output Operator
                     key expressions: _col0 (type: int)
                     sort order: +
                     Map-reduce partition columns: _col0 (type: int)
-                    Statistics: Num rows: 15 Data size: 61 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 2 Data size: 8 Basic stats: COMPLETE Column stats: NONE
                     value expressions: _col1 (type: bigint)
         Reducer 3 
             Execution mode: llap
@@ -333,11 +333,11 @@ STAGE PLANS:
                 keys: KEY._col0 (type: int)
                 mode: mergepartial
                 outputColumnNames: _col0, _col1
-                Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                 Select Operator
                   expressions: hash(_col0) (type: int), hash(_col1) (type: int)
                   outputColumnNames: _col0, _col1
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Group By Operator
                     aggregations: sum(_col0), sum(_col1)
                     mode: hash
@@ -418,14 +418,14 @@ STAGE PLANS:
             Map Operator Tree:
                 TableScan
                   alias: x
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Filter Operator
                     predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                     Select Operator
                       expressions: key (type: int)
                       outputColumnNames: _col0
-                      Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                       Map Join Operator
                         condition map:
                              Inner Join 0 to 1
@@ -438,18 +438,18 @@ STAGE PLANS:
                         input vertices:
                           1 Map 4
                           2 Map 5
-                        Statistics: Num rows: 15 Data size: 61 Basic stats: COMPLETE Column stats: NONE
+                        Statistics: Num rows: 2 Data size: 8 Basic stats: COMPLETE Column stats: NONE
                         Group By Operator
                           aggregations: count()
                           keys: _col1 (type: int)
                           mode: hash
                           outputColumnNames: _col0, _col1
-                          Statistics: Num rows: 15 Data size: 61 Basic stats: COMPLETE Column stats: NONE
+                          Statistics: Num rows: 2 Data size: 8 Basic stats: COMPLETE Column stats: NONE
                           Reduce Output Operator
                             key expressions: _col0 (type: int)
                             sort order: +
                             Map-reduce partition columns: _col0 (type: int)
-                            Statistics: Num rows: 15 Data size: 61 Basic stats: COMPLETE Column stats: NONE
+                            Statistics: Num rows: 2 Data size: 8 Basic stats: COMPLETE Column stats: NONE
                             value expressions: _col1 (type: bigint)
             Execution mode: llap
             LLAP IO: no inputs
@@ -457,38 +457,38 @@ STAGE PLANS:
             Map Operator Tree:
                 TableScan
                   alias: y
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Filter Operator
                     predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                     Select Operator
                       expressions: key (type: int)
                       outputColumnNames: _col0
-                      Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                       Reduce Output Operator
                         key expressions: _col0 (type: int)
                         sort order: +
                         Map-reduce partition columns: _col0 (type: int)
-                        Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                        Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
             Execution mode: llap
             LLAP IO: no inputs
         Map 5 
             Map Operator Tree:
                 TableScan
                   alias: z
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Filter Operator
                     predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                     Select Operator
                       expressions: key (type: int)
                       outputColumnNames: _col0
-                      Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                       Reduce Output Operator
                         key expressions: _col0 (type: int)
                         sort order: +
                         Map-reduce partition columns: _col0 (type: int)
-                        Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                        Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
             Execution mode: llap
             LLAP IO: no inputs
         Reducer 2 
@@ -499,11 +499,11 @@ STAGE PLANS:
                 keys: KEY._col0 (type: int)
                 mode: mergepartial
                 outputColumnNames: _col0, _col1
-                Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                 Select Operator
                   expressions: hash(_col0) (type: int), hash(_col1) (type: int)
                   outputColumnNames: _col0, _col1
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Group By Operator
                     aggregations: sum(_col0), sum(_col1)
                     mode: hash
@@ -584,48 +584,48 @@ STAGE PLANS:
             Map Operator Tree:
                 TableScan
                   alias: x
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Select Operator
                     expressions: key (type: int)
                     outputColumnNames: _col0
-                    Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                     Reduce Output Operator
                       key expressions: _col0 (type: int)
                       sort order: +
                       Map-reduce partition columns: _col0 (type: int)
-                      Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
             Execution mode: llap
             LLAP IO: no inputs
         Map 5 
             Map Operator Tree:
                 TableScan
                   alias: y
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Select Operator
                     expressions: key (type: int)
                     outputColumnNames: _col0
-                    Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                     Reduce Output Operator
                       key expressions: _col0 (type: int)
                       sort order: +
                       Map-reduce partition columns: _col0 (type: int)
-                      Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
             Execution mode: llap
             LLAP IO: no inputs
         Map 6 
             Map Operator Tree:
                 TableScan
                   alias: z
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Select Operator
                     expressions: key (type: int)
                     outputColumnNames: _col0
-                    Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                     Reduce Output Operator
                       key expressions: _col0 (type: int)
                       sort order: +
                       Map-reduce partition columns: _col0 (type: int)
-                      Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
             Execution mode: llap
             LLAP IO: no inputs
         Reducer 2 
@@ -640,18 +640,18 @@ STAGE PLANS:
                   1 _col0 (type: int)
                   2 _col0 (type: int)
                 outputColumnNames: _col0
-                Statistics: Num rows: 15 Data size: 61 Basic stats: COMPLETE Column stats: NONE
+                Statistics: Num rows: 2 Data size: 8 Basic stats: COMPLETE Column stats: NONE
                 Group By Operator
                   aggregations: count()
                   keys: _col0 (type: int)
                   mode: hash
                   outputColumnNames: _col0, _col1
-                  Statistics: Num rows: 15 Data size: 61 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 2 Data size: 8 Basic stats: COMPLETE Column stats: NONE
                   Reduce Output Operator
                     key expressions: _col0 (type: int)
                     sort order: +
                     Map-reduce partition columns: _col0 (type: int)
-                    Statistics: Num rows: 15 Data size: 61 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 2 Data size: 8 Basic stats: COMPLETE Column stats: NONE
                     value expressions: _col1 (type: bigint)
         Reducer 3 
             Execution mode: llap
@@ -661,11 +661,11 @@ STAGE PLANS:
                 keys: KEY._col0 (type: int)
                 mode: mergepartial
                 outputColumnNames: _col0, _col1
-                Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                 Select Operator
                   expressions: hash(_col0) (type: int), hash(_col1) (type: int)
                   outputColumnNames: _col0, _col1
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Group By Operator
                     aggregations: sum(_col0), sum(_col1)
                     mode: hash
@@ -746,48 +746,48 @@ STAGE PLANS:
             Map Operator Tree:
                 TableScan
                   alias: x
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Select Operator
                     expressions: key (type: int)
                     outputColumnNames: _col0
-                    Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                     Reduce Output Operator
                       key expressions: _col0 (type: int)
                       sort order: +
                       Map-reduce partition columns: _col0 (type: int)
-                      Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
             Execution mode: llap
             LLAP IO: no inputs
         Map 5 
             Map Operator Tree:
                 TableScan
                   alias: y
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Select Operator
                     expressions: key (type: int)
                     outputColumnNames: _col0
-                    Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                     Reduce Output Operator
                       key expressions: _col0 (type: int)
                       sort order: +
                       Map-reduce partition columns: _col0 (type: int)
-                      Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
             Execution mode: llap
             LLAP IO: no inputs
         Map 6 
             Map Operator Tree:
                 TableScan
                   alias: z
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Select Operator
                     expressions: key (type: int)
                     outputColumnNames: _col0
-                    Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                     Reduce Output Operator
                       key expressions: _col0 (type: int)
                       sort order: +
                       Map-reduce partition columns: _col0 (type: int)
-                      Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
             Execution mode: llap
             LLAP IO: no inputs
         Reducer 2 
@@ -802,18 +802,18 @@ STAGE PLANS:
                   1 _col0 (type: int)
                   2 _col0 (type: int)
                 outputColumnNames: _col0
-                Statistics: Num rows: 15 Data size: 61 Basic stats: COMPLETE Column stats: NONE
+                Statistics: Num rows: 2 Data size: 8 Basic stats: COMPLETE Column stats: NONE
                 Group By Operator
                   aggregations: count()
                   keys: _col0 (type: int)
                   mode: hash
                   outputColumnNames: _col0, _col1
-                  Statistics: Num rows: 15 Data size: 61 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 2 Data size: 8 Basic stats: COMPLETE Column stats: NONE
                   Reduce Output Operator
                     key expressions: _col0 (type: int)
                     sort order: +
                     Map-reduce partition columns: _col0 (type: int)
-                    Statistics: Num rows: 15 Data size: 61 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 2 Data size: 8 Basic stats: COMPLETE Column stats: NONE
                     value expressions: _col1 (type: bigint)
         Reducer 3 
             Execution mode: llap
@@ -823,11 +823,11 @@ STAGE PLANS:
                 keys: KEY._col0 (type: int)
                 mode: mergepartial
                 outputColumnNames: _col0, _col1
-                Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                 Select Operator
                   expressions: hash(_col0) (type: int), hash(_col1) (type: int)
                   outputColumnNames: _col0, _col1
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Group By Operator
                     aggregations: sum(_col0), sum(_col1)
                     mode: hash
@@ -908,48 +908,48 @@ STAGE PLANS:
             Map Operator Tree:
                 TableScan
                   alias: x
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Select Operator
                     expressions: key (type: int)
                     outputColumnNames: _col0
-                    Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                     Reduce Output Operator
                       key expressions: _col0 (type: int)
                       sort order: +
                       Map-reduce partition columns: _col0 (type: int)
-                      Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
             Execution mode: llap
             LLAP IO: no inputs
         Map 5 
             Map Operator Tree:
                 TableScan
                   alias: y
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Select Operator
                     expressions: key (type: int)
                     outputColumnNames: _col0
-                    Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                     Reduce Output Operator
                       key expressions: _col0 (type: int)
                       sort order: +
                       Map-reduce partition columns: _col0 (type: int)
-                      Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
             Execution mode: llap
             LLAP IO: no inputs
         Map 6 
             Map Operator Tree:
                 TableScan
                   alias: z
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Select Operator
                     expressions: key (type: int)
                     outputColumnNames: _col0
-                    Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                     Reduce Output Operator
                       key expressions: _col0 (type: int)
                       sort order: +
                       Map-reduce partition columns: _col0 (type: int)
-                      Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
             Execution mode: llap
             LLAP IO: no inputs
         Reducer 2 
@@ -964,18 +964,18 @@ STAGE PLANS:
                   1 _col0 (type: int)
                   2 _col0 (type: int)
                 outputColumnNames: _col1
-                Statistics: Num rows: 15 Data size: 61 Basic stats: COMPLETE Column stats: NONE
+                Statistics: Num rows: 2 Data size: 8 Basic stats: COMPLETE Column stats: NONE
                 Group By Operator
                   aggregations: count()
                   keys: _col1 (type: int)
                   mode: hash
                   outputColumnNames: _col0, _col1
-                  Statistics: Num rows: 15 Data size: 61 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 2 Data size: 8 Basic stats: COMPLETE Column stats: NONE
                   Reduce Output Operator
                     key expressions: _col0 (type: int)
                     sort order: +
                     Map-reduce partition columns: _col0 (type: int)
-                    Statistics: Num rows: 15 Data size: 61 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 2 Data size: 8 Basic stats: COMPLETE Column stats: NONE
                     value expressions: _col1 (type: bigint)
         Reducer 3 
             Execution mode: llap
@@ -985,11 +985,11 @@ STAGE PLANS:
                 keys: KEY._col0 (type: int)
                 mode: mergepartial
                 outputColumnNames: _col0, _col1
-                Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                 Select Operator
                   expressions: hash(_col0) (type: int), hash(_col1) (type: int)
                   outputColumnNames: _col0, _col1
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Group By Operator
                     aggregations: sum(_col0), sum(_col1)
                     mode: hash
@@ -1070,48 +1070,48 @@ STAGE PLANS:
             Map Operator Tree:
                 TableScan
                   alias: x
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Select Operator
                     expressions: key (type: int)
                     outputColumnNames: _col0
-                    Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                     Reduce Output Operator
                       key expressions: _col0 (type: int)
                       sort order: +
                       Map-reduce partition columns: _col0 (type: int)
-                      Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
             Execution mode: llap
             LLAP IO: no inputs
         Map 5 
             Map Operator Tree:
                 TableScan
                   alias: y
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Select Operator
                     expressions: key (type: int)
                     outputColumnNames: _col0
-                    Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                     Reduce Output Operator
                       key expressions: _col0 (type: int)
                       sort order: +
                       Map-reduce partition columns: _col0 (type: int)
-                      Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
             Execution mode: llap
             LLAP IO: no inputs
         Map 6 
             Map Operator Tree:
                 TableScan
                   alias: z
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Select Operator
                     expressions: key (type: int)
                     outputColumnNames: _col0
-                    Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                     Reduce Output Operator
                       key expressions: _col0 (type: int)
                       sort order: +
                       Map-reduce partition columns: _col0 (type: int)
-                      Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
             Execution mode: llap
             LLAP IO: no inputs
         Reducer 2 
@@ -1126,18 +1126,18 @@ STAGE PLANS:
                   1 _col0 (type: int)
                   2 _col0 (type: int)
                 outputColumnNames: _col2
-                Statistics: Num rows: 15 Data size: 61 Basic stats: COMPLETE Column stats: NONE
+                Statistics: Num rows: 2 Data size: 8 Basic stats: COMPLETE Column stats: NONE
                 Group By Operator
                   aggregations: count()
                   keys: _col2 (type: int)
                   mode: hash
                   outputColumnNames: _col0, _col1
-                  Statistics: Num rows: 15 Data size: 61 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 2 Data size: 8 Basic stats: COMPLETE Column stats: NONE
                   Reduce Output Operator
                     key expressions: _col0 (type: int)
                     sort order: +
                     Map-reduce partition columns: _col0 (type: int)
-                    Statistics: Num rows: 15 Data size: 61 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 2 Data size: 8 Basic stats: COMPLETE Column stats: NONE
                     value expressions: _col1 (type: bigint)
         Reducer 3 
             Execution mode: llap
@@ -1147,11 +1147,11 @@ STAGE PLANS:
                 keys: KEY._col0 (type: int)
                 mode: mergepartial
                 outputColumnNames: _col0, _col1
-                Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                 Select Operator
                   expressions: hash(_col0) (type: int), hash(_col1) (type: int)
                   outputColumnNames: _col0, _col1
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Group By Operator
                     aggregations: sum(_col0), sum(_col1)
                     mode: hash
@@ -1232,48 +1232,48 @@ STAGE PLANS:
             Map Operator Tree:
                 TableScan
                   alias: x
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Select Operator
                     expressions: key (type: int)
                     outputColumnNames: _col0
-                    Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                     Reduce Output Operator
                       key expressions: _col0 (type: int)
                       sort order: +
                       Map-reduce partition columns: _col0 (type: int)
-                      Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
             Execution mode: llap
             LLAP IO: no inputs
         Map 5 
             Map Operator Tree:
                 TableScan
                   alias: y
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Select Operator
                     expressions: key (type: int)
                     outputColumnNames: _col0
-                    Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                     Reduce Output Operator
                       key expressions: _col0 (type: int)
                       sort order: +
                       Map-reduce partition columns: _col0 (type: int)
-                      Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
             Execution mode: llap
             LLAP IO: no inputs
         Map 6 
             Map Operator Tree:
                 TableScan
                   alias: z
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Select Operator
                     expressions: key (type: int)
                     outputColumnNames: _col0
-                    Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                     Reduce Output Operator
                       key expressions: _col0 (type: int)
                       sort order: +
                       Map-reduce partition columns: _col0 (type: int)
-                      Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
             Execution mode: llap
             LLAP IO: no inputs
         Reducer 2 
@@ -1288,18 +1288,18 @@ STAGE PLANS:
                   1 _col0 (type: int)
                   2 _col0 (type: int)
                 outputColumnNames: _col2
-                Statistics: Num rows: 15 Data size: 61 Basic stats: COMPLETE Column stats: NONE
+                Statistics: Num rows: 2 Data size: 8 Basic stats: COMPLETE Column stats: NONE
                 Group By Operator
                   aggregations: count()
                   keys: _col2 (type: int)
                   mode: hash
                   outputColumnNames: _col0, _col1
-                  Statistics: Num rows: 15 Data size: 61 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 2 Data size: 8 Basic stats: COMPLETE Column stats: NONE
                   Reduce Output Operator
                     key expressions: _col0 (type: int)
                     sort order: +
                     Map-reduce partition columns: _col0 (type: int)
-                    Statistics: Num rows: 15 Data size: 61 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 2 Data size: 8 Basic stats: COMPLETE Column stats: NONE
                     value expressions: _col1 (type: bigint)
         Reducer 3 
             Execution mode: llap
@@ -1309,11 +1309,11 @@ STAGE PLANS:
                 keys: KEY._col0 (type: int)
                 mode: mergepartial
                 outputColumnNames: _col0, _col1
-                Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                 Select Operator
                   expressions: hash(_col0) (type: int), hash(_col1) (type: int)
                   outputColumnNames: _col0, _col1
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Group By Operator
                     aggregations: sum(_col0), sum(_col1)
                     mode: hash
@@ -1394,48 +1394,48 @@ STAGE PLANS:
             Map Operator Tree:
                 TableScan
                   alias: x
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Select Operator
                     expressions: key (type: int)
                     outputColumnNames: _col0
-                    Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                     Reduce Output Operator
                       key expressions: _col0 (type: int)
                       sort order: +
                       Map-reduce partition columns: _col0 (type: int)
-                      Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
             Execution mode: llap
             LLAP IO: no inputs
         Map 5 
             Map Operator Tree:
                 TableScan
                   alias: y
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Select Operator
                     expressions: key (type: int)
                     outputColumnNames: _col0
-                    Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                     Reduce Output Operator
                       key expressions: _col0 (type: int)
                       sort order: +
                       Map-reduce partition columns: _col0 (type: int)
-                      Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
             Execution mode: llap
             LLAP IO: no inputs
         Map 6 
             Map Operator Tree:
                 TableScan
                   alias: z
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Select Operator
                     expressions: key (type: int)
                     outputColumnNames: _col0
-                    Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                     Reduce Output Operator
                       key expressions: _col0 (type: int)
                       sort order: +
                       Map-reduce partition columns: _col0 (type: int)
-                      Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
             Execution mode: llap
             LLAP IO: no inputs
         Reducer 2 
@@ -1450,18 +1450,18 @@ STAGE PLANS:
                   1 _col0 (type: int)
                   2 _col0 (type: int)
                 outputColumnNames: _col1
-                Statistics: Num rows: 15 Data size: 61 Basic stats: COMPLETE Column stats: NONE
+                Statistics: Num rows: 2 Data size: 8 Basic stats: COMPLETE Column stats: NONE
                 Group By Operator
                   aggregations: count()
                   keys: _col1 (type: int)
                   mode: hash
                   outputColumnNames: _col0, _col1
-                  Statistics: Num rows: 15 Data size: 61 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 2 Data size: 8 Basic stats: COMPLETE Column stats: NONE
                   Reduce Output Operator
                     key expressions: _col0 (type: int)
                     sort order: +
                     Map-reduce partition columns: _col0 (type: int)
-                    Statistics: Num rows: 15 Data size: 61 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 2 Data size: 8 Basic stats: COMPLETE Column stats: NONE
                     value expressions: _col1 (type: bigint)
         Reducer 3 
             Execution mode: llap
@@ -1471,11 +1471,11 @@ STAGE PLANS:
                 keys: KEY._col0 (type: int)
                 mode: mergepartial
                 outputColumnNames: _col0, _col1
-                Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                 Select Operator
                   expressions: hash(_col0) (type: int), hash(_col1) (type: int)
                   outputColumnNames: _col0, _col1
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Group By Operator
                     aggregations: sum(_col0), sum(_col1)
                     mode: hash
@@ -1556,48 +1556,48 @@ STAGE PLANS:
             Map Operator Tree:
                 TableScan
                   alias: x
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Select Operator
                     expressions: key (type: int)
                     outputColumnNames: _col0
-                    Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                     Reduce Output Operator
                       key expressions: _col0 (type: int)
                       sort order: +
                       Map-reduce partition columns: _col0 (type: int)
-                      Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
             Execution mode: llap
             LLAP IO: no inputs
         Map 5 
             Map Operator Tree:
                 TableScan
                   alias: y
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Select Operator
                     expressions: key (type: int)
                     outputColumnNames: _col0
-                    Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                     Reduce Output Operator
                       key expressions: _col0 (type: int)
                       sort order: +
                       Map-reduce partition columns: _col0 (type: int)
-                      Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
             Execution mode: llap
             LLAP IO: no inputs
         Map 6 
             Map Operator Tree:
                 TableScan
                   alias: z
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Select Operator
                     expressions: key (type: int)
                     outputColumnNames: _col0
-                    Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                     Reduce Output Operator
                       key expressions: _col0 (type: int)
                       sort order: +
                       Map-reduce partition columns: _col0 (type: int)
-                      Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
             Execution mode: llap
             LLAP IO: no inputs
         Reducer 2 
@@ -1612,18 +1612,18 @@ STAGE PLANS:
                   1 _col0 (type: int)
                   2 _col0 (type: int)
                 outputColumnNames: _col1
-                Statistics: Num rows: 15 Data size: 61 Basic stats: COMPLETE Column stats: NONE
+                Statistics: Num rows: 2 Data size: 8 Basic stats: COMPLETE Column stats: NONE
                 Group By Operator
                   aggregations: count()
                   keys: _col1 (type: int)
                   mode: hash
                   outputColumnNames: _col0, _col1
-                  Statistics: Num rows: 15 Data size: 61 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 2 Data size: 8 Basic stats: COMPLETE Column stats: NONE
                   Reduce Output Operator
                     key expressions: _col0 (type: int)
                     sort order: +
                     Map-reduce partition columns: _col0 (type: int)
-                    Statistics: Num rows: 15 Data size: 61 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 2 Data size: 8 Basic stats: COMPLETE Column stats: NONE
                     value expressions: _col1 (type: bigint)
         Reducer 3 
             Execution mode: llap
@@ -1633,11 +1633,11 @@ STAGE PLANS:
                 keys: KEY._col0 (type: int)
                 mode: mergepartial
                 outputColumnNames: _col0, _col1
-                Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                 Select Operator
                   expressions: hash(_col0) (type: int), hash(_col1) (type: int)
                   outputColumnNames: _col0, _col1
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Group By Operator
                     aggregations: sum(_col0), sum(_col1)
                     mode: hash
@@ -1718,48 +1718,48 @@ STAGE PLANS:
             Map Operator Tree:
                 TableScan
                   alias: x
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Select Operator
                     expressions: key (type: int)
                     outputColumnNames: _col0
-                    Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                     Reduce Output Operator
                       key expressions: _col0 (type: int)
                       sort order: +
                       Map-reduce partition columns: _col0 (type: int)
-                      Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
             Execution mode: llap
             LLAP IO: no inputs
         Map 5 
             Map Operator Tree:
                 TableScan
                   alias: y
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Select Operator
                     expressions: key (type: int)
                     outputColumnNames: _col0
-                    Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                     Reduce Output Operator
                       key expressions: _col0 (type: int)
                       sort order: +
                       Map-reduce partition columns: _col0 (type: int)
-                      Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
             Execution mode: llap
             LLAP IO: no inputs
         Map 6 
             Map Operator Tree:
                 TableScan
                   alias: z
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Select Operator
                     expressions: key (type: int)
                     outputColumnNames: _col0
-                    Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                     Reduce Output Operator
                       key expressions: _col0 (type: int)
                       sort order: +
                       Map-reduce partition columns: _col0 (type: int)
-                      Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                      Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
             Execution mode: llap
             LLAP IO: no inputs
         Reducer 2 
@@ -1774,18 +1774,18 @@ STAGE PLANS:
                   1 _col0 (type: int)
                   2 _col0 (type: int)
                 outputColumnNames: _col1
-                Statistics: Num rows: 15 Data size: 61 Basic stats: COMPLETE Column stats: NONE
+                Statistics: Num rows: 2 Data size: 8 Basic stats: COMPLETE Column stats: NONE
                 Group By Operator
                   aggregations: count()
                   keys: _col1 (type: int)
                   mode: hash
                   outputColumnNames: _col0, _col1
-                  Statistics: Num rows: 15 Data size: 61 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 2 Data size: 8 Basic stats: COMPLETE Column stats: NONE
                   Reduce Output Operator
                     key expressions: _col0 (type: int)
                     sort order: +
                     Map-reduce partition columns: _col0 (type: int)
-                    Statistics: Num rows: 15 Data size: 61 Basic stats: COMPLETE Column stats: NONE
+                    Statistics: Num rows: 2 Data size: 8 Basic stats: COMPLETE Column stats: NONE
                     value expressions: _col1 (type: bigint)
         Reducer 3 
             Execution mode: llap
@@ -1795,11 +1795,11 @@ STAGE PLANS:
                 keys: KEY._col0 (type: int)
                 mode: mergepartial
                 outputColumnNames: _col0, _col1
-                Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                 Select Operator
                   expressions: hash(_col0) (type: int), hash(_col1) (type: int)
                   outputColumnNames: _col0, _col1
-                  Statistics: Num rows: 7 Data size: 28 Basic stats: COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1 Data size: 4 Basic stats: COMPLETE Column stats: NONE
                   Group By Operator
                     aggregations: sum(_col0), sum(_col1)
                     mode: hash


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