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Posted to commits@hive.apache.org by se...@apache.org on 2016/10/25 21:43:25 UTC

[06/28] hive git commit: HIVE-12765: Support Intersect (distinct/all) Except (distinct/all) Minus (distinct/all) (Pengcheng Xiong, reviewed by Ashutosh Chauhan)

http://git-wip-us.apache.org/repos/asf/hive/blob/0049a21f/ql/src/test/results/clientpositive/llap/intersect_merge.q.out
----------------------------------------------------------------------
diff --git a/ql/src/test/results/clientpositive/llap/intersect_merge.q.out b/ql/src/test/results/clientpositive/llap/intersect_merge.q.out
new file mode 100644
index 0000000..40e657d
--- /dev/null
+++ b/ql/src/test/results/clientpositive/llap/intersect_merge.q.out
@@ -0,0 +1,1956 @@
+PREHOOK: query: create table a(key int, value int)
+PREHOOK: type: CREATETABLE
+PREHOOK: Output: database:default
+PREHOOK: Output: default@a
+POSTHOOK: query: create table a(key int, value int)
+POSTHOOK: type: CREATETABLE
+POSTHOOK: Output: database:default
+POSTHOOK: Output: default@a
+PREHOOK: query: insert into table a values (1,2),(1,2),(1,3),(2,3)
+PREHOOK: type: QUERY
+PREHOOK: Input: default@values__tmp__table__1
+PREHOOK: Output: default@a
+POSTHOOK: query: insert into table a values (1,2),(1,2),(1,3),(2,3)
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@values__tmp__table__1
+POSTHOOK: Output: default@a
+POSTHOOK: Lineage: a.key EXPRESSION [(values__tmp__table__1)values__tmp__table__1.FieldSchema(name:tmp_values_col1, type:string, comment:), ]
+POSTHOOK: Lineage: a.value EXPRESSION [(values__tmp__table__1)values__tmp__table__1.FieldSchema(name:tmp_values_col2, type:string, comment:), ]
+PREHOOK: query: create table b(key int, value int)
+PREHOOK: type: CREATETABLE
+PREHOOK: Output: database:default
+PREHOOK: Output: default@b
+POSTHOOK: query: create table b(key int, value int)
+POSTHOOK: type: CREATETABLE
+POSTHOOK: Output: database:default
+POSTHOOK: Output: default@b
+PREHOOK: query: insert into table b values (1,2),(2,3)
+PREHOOK: type: QUERY
+PREHOOK: Input: default@values__tmp__table__2
+PREHOOK: Output: default@b
+POSTHOOK: query: insert into table b values (1,2),(2,3)
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@values__tmp__table__2
+POSTHOOK: Output: default@b
+POSTHOOK: Lineage: b.key EXPRESSION [(values__tmp__table__2)values__tmp__table__2.FieldSchema(name:tmp_values_col1, type:string, comment:), ]
+POSTHOOK: Lineage: b.value EXPRESSION [(values__tmp__table__2)values__tmp__table__2.FieldSchema(name:tmp_values_col2, type:string, comment:), ]
+PREHOOK: query: explain select * from b intersect distinct select * from a intersect distinct select * from b intersect distinct select * from a intersect distinct select * from b
+PREHOOK: type: QUERY
+POSTHOOK: query: explain select * from b intersect distinct select * from a intersect distinct select * from b intersect distinct select * from a intersect distinct select * from b
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Tez
+#### A masked pattern was here ####
+      Edges:
+        Reducer 10 <- Map 9 (SIMPLE_EDGE), Union 3 (CONTAINS)
+        Reducer 12 <- Map 11 (SIMPLE_EDGE), Union 3 (CONTAINS)
+        Reducer 2 <- Map 1 (SIMPLE_EDGE), Union 3 (CONTAINS)
+        Reducer 4 <- Union 3 (SIMPLE_EDGE)
+        Reducer 6 <- Map 5 (SIMPLE_EDGE), Union 3 (CONTAINS)
+        Reducer 8 <- Map 7 (SIMPLE_EDGE), Union 3 (CONTAINS)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int), value (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                    Group By Operator
+                      aggregations: count(1)
+                      keys: _col0 (type: int), _col1 (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1, _col2
+                      Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col2 (type: bigint)
+            Execution mode: llap
+            LLAP IO: no inputs
+        Map 11 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int), value (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                    Group By Operator
+                      aggregations: count(1)
+                      keys: _col0 (type: int), _col1 (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1, _col2
+                      Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col2 (type: bigint)
+            Execution mode: llap
+            LLAP IO: no inputs
+        Map 5 
+            Map Operator Tree:
+                TableScan
+                  alias: a
+                  Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int), value (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                    Group By Operator
+                      aggregations: count(1)
+                      keys: _col0 (type: int), _col1 (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1, _col2
+                      Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col2 (type: bigint)
+            Execution mode: llap
+            LLAP IO: no inputs
+        Map 7 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int), value (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                    Group By Operator
+                      aggregations: count(1)
+                      keys: _col0 (type: int), _col1 (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1, _col2
+                      Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col2 (type: bigint)
+            Execution mode: llap
+            LLAP IO: no inputs
+        Map 9 
+            Map Operator Tree:
+                TableScan
+                  alias: a
+                  Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int), value (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                    Group By Operator
+                      aggregations: count(1)
+                      keys: _col0 (type: int), _col1 (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1, _col2
+                      Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col2 (type: bigint)
+            Execution mode: llap
+            LLAP IO: no inputs
+        Reducer 10 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: count(_col2)
+                  keys: _col0 (type: int), _col1 (type: int)
+                  mode: hash
+                  outputColumnNames: _col0, _col1, _col2
+                  Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: _col0 (type: int), _col1 (type: int)
+                    sort order: ++
+                    Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                    Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col2 (type: bigint)
+        Reducer 12 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 1 Data size: 3 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: count(_col2)
+                  keys: _col0 (type: int), _col1 (type: int)
+                  mode: hash
+                  outputColumnNames: _col0, _col1, _col2
+                  Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: _col0 (type: int), _col1 (type: int)
+                    sort order: ++
+                    Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                    Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col2 (type: bigint)
+        Reducer 2 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 1 Data size: 3 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: count(_col2)
+                  keys: _col0 (type: int), _col1 (type: int)
+                  mode: hash
+                  outputColumnNames: _col0, _col1, _col2
+                  Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: _col0 (type: int), _col1 (type: int)
+                    sort order: ++
+                    Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                    Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col2 (type: bigint)
+        Reducer 4 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 3 Data size: 9 Basic stats: COMPLETE Column stats: NONE
+                Filter Operator
+                  predicate: (_col2 = 5) (type: boolean)
+                  Statistics: Num rows: 1 Data size: 3 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: _col0 (type: int), _col1 (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 1 Data size: 3 Basic stats: COMPLETE Column stats: NONE
+                    File Output Operator
+                      compressed: false
+                      Statistics: Num rows: 1 Data size: 3 Basic stats: COMPLETE Column stats: NONE
+                      table:
+                          input format: org.apache.hadoop.mapred.SequenceFileInputFormat
+                          output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
+                          serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+        Reducer 6 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: count(_col2)
+                  keys: _col0 (type: int), _col1 (type: int)
+                  mode: hash
+                  outputColumnNames: _col0, _col1, _col2
+                  Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: _col0 (type: int), _col1 (type: int)
+                    sort order: ++
+                    Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                    Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col2 (type: bigint)
+        Reducer 8 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 1 Data size: 3 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: count(_col2)
+                  keys: _col0 (type: int), _col1 (type: int)
+                  mode: hash
+                  outputColumnNames: _col0, _col1, _col2
+                  Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: _col0 (type: int), _col1 (type: int)
+                    sort order: ++
+                    Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                    Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col2 (type: bigint)
+        Union 3 
+            Vertex: Union 3
+
+  Stage: Stage-0
+    Fetch Operator
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: explain (select * from b intersect distinct select * from a) intersect distinct (select * from b intersect distinct select * from a)
+PREHOOK: type: QUERY
+POSTHOOK: query: explain (select * from b intersect distinct select * from a) intersect distinct (select * from b intersect distinct select * from a)
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Tez
+#### A masked pattern was here ####
+      Edges:
+        Reducer 10 <- Map 9 (SIMPLE_EDGE), Union 3 (CONTAINS)
+        Reducer 2 <- Map 1 (SIMPLE_EDGE), Union 3 (CONTAINS)
+        Reducer 4 <- Union 3 (SIMPLE_EDGE)
+        Reducer 6 <- Map 5 (SIMPLE_EDGE), Union 3 (CONTAINS)
+        Reducer 8 <- Map 7 (SIMPLE_EDGE), Union 3 (CONTAINS)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int), value (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                    Group By Operator
+                      aggregations: count(1)
+                      keys: _col0 (type: int), _col1 (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1, _col2
+                      Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col2 (type: bigint)
+            Execution mode: llap
+            LLAP IO: no inputs
+        Map 5 
+            Map Operator Tree:
+                TableScan
+                  alias: a
+                  Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int), value (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                    Group By Operator
+                      aggregations: count(1)
+                      keys: _col0 (type: int), _col1 (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1, _col2
+                      Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col2 (type: bigint)
+            Execution mode: llap
+            LLAP IO: no inputs
+        Map 7 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int), value (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                    Group By Operator
+                      aggregations: count(1)
+                      keys: _col0 (type: int), _col1 (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1, _col2
+                      Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col2 (type: bigint)
+            Execution mode: llap
+            LLAP IO: no inputs
+        Map 9 
+            Map Operator Tree:
+                TableScan
+                  alias: a
+                  Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int), value (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                    Group By Operator
+                      aggregations: count(1)
+                      keys: _col0 (type: int), _col1 (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1, _col2
+                      Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col2 (type: bigint)
+            Execution mode: llap
+            LLAP IO: no inputs
+        Reducer 10 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: count(_col2)
+                  keys: _col0 (type: int), _col1 (type: int)
+                  mode: hash
+                  outputColumnNames: _col0, _col1, _col2
+                  Statistics: Num rows: 6 Data size: 18 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: _col0 (type: int), _col1 (type: int)
+                    sort order: ++
+                    Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                    Statistics: Num rows: 6 Data size: 18 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col2 (type: bigint)
+        Reducer 2 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 1 Data size: 3 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: count(_col2)
+                  keys: _col0 (type: int), _col1 (type: int)
+                  mode: hash
+                  outputColumnNames: _col0, _col1, _col2
+                  Statistics: Num rows: 6 Data size: 18 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: _col0 (type: int), _col1 (type: int)
+                    sort order: ++
+                    Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                    Statistics: Num rows: 6 Data size: 18 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col2 (type: bigint)
+        Reducer 4 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 3 Data size: 9 Basic stats: COMPLETE Column stats: NONE
+                Filter Operator
+                  predicate: (_col2 = 4) (type: boolean)
+                  Statistics: Num rows: 1 Data size: 3 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: _col0 (type: int), _col1 (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 1 Data size: 3 Basic stats: COMPLETE Column stats: NONE
+                    File Output Operator
+                      compressed: false
+                      Statistics: Num rows: 1 Data size: 3 Basic stats: COMPLETE Column stats: NONE
+                      table:
+                          input format: org.apache.hadoop.mapred.SequenceFileInputFormat
+                          output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
+                          serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+        Reducer 6 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: count(_col2)
+                  keys: _col0 (type: int), _col1 (type: int)
+                  mode: hash
+                  outputColumnNames: _col0, _col1, _col2
+                  Statistics: Num rows: 6 Data size: 18 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: _col0 (type: int), _col1 (type: int)
+                    sort order: ++
+                    Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                    Statistics: Num rows: 6 Data size: 18 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col2 (type: bigint)
+        Reducer 8 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 1 Data size: 3 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: count(_col2)
+                  keys: _col0 (type: int), _col1 (type: int)
+                  mode: hash
+                  outputColumnNames: _col0, _col1, _col2
+                  Statistics: Num rows: 6 Data size: 18 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: _col0 (type: int), _col1 (type: int)
+                    sort order: ++
+                    Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                    Statistics: Num rows: 6 Data size: 18 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col2 (type: bigint)
+        Union 3 
+            Vertex: Union 3
+
+  Stage: Stage-0
+    Fetch Operator
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: explain select * from b intersect distinct (select * from a intersect distinct (select * from b intersect distinct (select * from a intersect distinct select * from b)))
+PREHOOK: type: QUERY
+POSTHOOK: query: explain select * from b intersect distinct (select * from a intersect distinct (select * from b intersect distinct (select * from a intersect distinct select * from b)))
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Tez
+#### A masked pattern was here ####
+      Edges:
+        Reducer 10 <- Map 9 (SIMPLE_EDGE), Union 3 (CONTAINS)
+        Reducer 12 <- Map 11 (SIMPLE_EDGE), Union 3 (CONTAINS)
+        Reducer 2 <- Map 1 (SIMPLE_EDGE), Union 3 (CONTAINS)
+        Reducer 4 <- Union 3 (SIMPLE_EDGE)
+        Reducer 6 <- Map 5 (SIMPLE_EDGE), Union 3 (CONTAINS)
+        Reducer 8 <- Map 7 (SIMPLE_EDGE), Union 3 (CONTAINS)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int), value (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                    Group By Operator
+                      aggregations: count(1)
+                      keys: _col0 (type: int), _col1 (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1, _col2
+                      Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col2 (type: bigint)
+            Execution mode: llap
+            LLAP IO: no inputs
+        Map 11 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int), value (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                    Group By Operator
+                      aggregations: count(1)
+                      keys: _col0 (type: int), _col1 (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1, _col2
+                      Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col2 (type: bigint)
+            Execution mode: llap
+            LLAP IO: no inputs
+        Map 5 
+            Map Operator Tree:
+                TableScan
+                  alias: a
+                  Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int), value (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                    Group By Operator
+                      aggregations: count(1)
+                      keys: _col0 (type: int), _col1 (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1, _col2
+                      Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col2 (type: bigint)
+            Execution mode: llap
+            LLAP IO: no inputs
+        Map 7 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int), value (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                    Group By Operator
+                      aggregations: count(1)
+                      keys: _col0 (type: int), _col1 (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1, _col2
+                      Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col2 (type: bigint)
+            Execution mode: llap
+            LLAP IO: no inputs
+        Map 9 
+            Map Operator Tree:
+                TableScan
+                  alias: a
+                  Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int), value (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                    Group By Operator
+                      aggregations: count(1)
+                      keys: _col0 (type: int), _col1 (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1, _col2
+                      Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col2 (type: bigint)
+            Execution mode: llap
+            LLAP IO: no inputs
+        Reducer 10 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: count(_col2)
+                  keys: _col0 (type: int), _col1 (type: int)
+                  mode: hash
+                  outputColumnNames: _col0, _col1, _col2
+                  Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: _col0 (type: int), _col1 (type: int)
+                    sort order: ++
+                    Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                    Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col2 (type: bigint)
+        Reducer 12 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 1 Data size: 3 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: count(_col2)
+                  keys: _col0 (type: int), _col1 (type: int)
+                  mode: hash
+                  outputColumnNames: _col0, _col1, _col2
+                  Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: _col0 (type: int), _col1 (type: int)
+                    sort order: ++
+                    Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                    Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col2 (type: bigint)
+        Reducer 2 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 1 Data size: 3 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: count(_col2)
+                  keys: _col0 (type: int), _col1 (type: int)
+                  mode: hash
+                  outputColumnNames: _col0, _col1, _col2
+                  Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: _col0 (type: int), _col1 (type: int)
+                    sort order: ++
+                    Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                    Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col2 (type: bigint)
+        Reducer 4 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 3 Data size: 9 Basic stats: COMPLETE Column stats: NONE
+                Filter Operator
+                  predicate: (_col2 = 5) (type: boolean)
+                  Statistics: Num rows: 1 Data size: 3 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: _col0 (type: int), _col1 (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 1 Data size: 3 Basic stats: COMPLETE Column stats: NONE
+                    File Output Operator
+                      compressed: false
+                      Statistics: Num rows: 1 Data size: 3 Basic stats: COMPLETE Column stats: NONE
+                      table:
+                          input format: org.apache.hadoop.mapred.SequenceFileInputFormat
+                          output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
+                          serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+        Reducer 6 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: count(_col2)
+                  keys: _col0 (type: int), _col1 (type: int)
+                  mode: hash
+                  outputColumnNames: _col0, _col1, _col2
+                  Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: _col0 (type: int), _col1 (type: int)
+                    sort order: ++
+                    Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                    Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col2 (type: bigint)
+        Reducer 8 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 1 Data size: 3 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: count(_col2)
+                  keys: _col0 (type: int), _col1 (type: int)
+                  mode: hash
+                  outputColumnNames: _col0, _col1, _col2
+                  Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: _col0 (type: int), _col1 (type: int)
+                    sort order: ++
+                    Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                    Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col2 (type: bigint)
+        Union 3 
+            Vertex: Union 3
+
+  Stage: Stage-0
+    Fetch Operator
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: explain (((select * from b intersect distinct select * from a) intersect distinct select * from b) intersect distinct select * from a) intersect distinct select * from b
+PREHOOK: type: QUERY
+POSTHOOK: query: explain (((select * from b intersect distinct select * from a) intersect distinct select * from b) intersect distinct select * from a) intersect distinct select * from b
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Tez
+#### A masked pattern was here ####
+      Edges:
+        Reducer 10 <- Map 9 (SIMPLE_EDGE), Union 3 (CONTAINS)
+        Reducer 12 <- Map 11 (SIMPLE_EDGE), Union 3 (CONTAINS)
+        Reducer 2 <- Map 1 (SIMPLE_EDGE), Union 3 (CONTAINS)
+        Reducer 4 <- Union 3 (SIMPLE_EDGE)
+        Reducer 6 <- Map 5 (SIMPLE_EDGE), Union 3 (CONTAINS)
+        Reducer 8 <- Map 7 (SIMPLE_EDGE), Union 3 (CONTAINS)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int), value (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                    Group By Operator
+                      aggregations: count(1)
+                      keys: _col0 (type: int), _col1 (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1, _col2
+                      Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col2 (type: bigint)
+            Execution mode: llap
+            LLAP IO: no inputs
+        Map 11 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int), value (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                    Group By Operator
+                      aggregations: count(1)
+                      keys: _col0 (type: int), _col1 (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1, _col2
+                      Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col2 (type: bigint)
+            Execution mode: llap
+            LLAP IO: no inputs
+        Map 5 
+            Map Operator Tree:
+                TableScan
+                  alias: a
+                  Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int), value (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                    Group By Operator
+                      aggregations: count(1)
+                      keys: _col0 (type: int), _col1 (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1, _col2
+                      Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col2 (type: bigint)
+            Execution mode: llap
+            LLAP IO: no inputs
+        Map 7 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int), value (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                    Group By Operator
+                      aggregations: count(1)
+                      keys: _col0 (type: int), _col1 (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1, _col2
+                      Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col2 (type: bigint)
+            Execution mode: llap
+            LLAP IO: no inputs
+        Map 9 
+            Map Operator Tree:
+                TableScan
+                  alias: a
+                  Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int), value (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                    Group By Operator
+                      aggregations: count(1)
+                      keys: _col0 (type: int), _col1 (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1, _col2
+                      Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col2 (type: bigint)
+            Execution mode: llap
+            LLAP IO: no inputs
+        Reducer 10 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: count(_col2)
+                  keys: _col0 (type: int), _col1 (type: int)
+                  mode: hash
+                  outputColumnNames: _col0, _col1, _col2
+                  Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: _col0 (type: int), _col1 (type: int)
+                    sort order: ++
+                    Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                    Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col2 (type: bigint)
+        Reducer 12 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 1 Data size: 3 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: count(_col2)
+                  keys: _col0 (type: int), _col1 (type: int)
+                  mode: hash
+                  outputColumnNames: _col0, _col1, _col2
+                  Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: _col0 (type: int), _col1 (type: int)
+                    sort order: ++
+                    Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                    Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col2 (type: bigint)
+        Reducer 2 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 1 Data size: 3 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: count(_col2)
+                  keys: _col0 (type: int), _col1 (type: int)
+                  mode: hash
+                  outputColumnNames: _col0, _col1, _col2
+                  Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: _col0 (type: int), _col1 (type: int)
+                    sort order: ++
+                    Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                    Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col2 (type: bigint)
+        Reducer 4 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 3 Data size: 9 Basic stats: COMPLETE Column stats: NONE
+                Filter Operator
+                  predicate: (_col2 = 5) (type: boolean)
+                  Statistics: Num rows: 1 Data size: 3 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: _col0 (type: int), _col1 (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 1 Data size: 3 Basic stats: COMPLETE Column stats: NONE
+                    File Output Operator
+                      compressed: false
+                      Statistics: Num rows: 1 Data size: 3 Basic stats: COMPLETE Column stats: NONE
+                      table:
+                          input format: org.apache.hadoop.mapred.SequenceFileInputFormat
+                          output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
+                          serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+        Reducer 6 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: count(_col2)
+                  keys: _col0 (type: int), _col1 (type: int)
+                  mode: hash
+                  outputColumnNames: _col0, _col1, _col2
+                  Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: _col0 (type: int), _col1 (type: int)
+                    sort order: ++
+                    Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                    Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col2 (type: bigint)
+        Reducer 8 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 1 Data size: 3 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: count(_col2)
+                  keys: _col0 (type: int), _col1 (type: int)
+                  mode: hash
+                  outputColumnNames: _col0, _col1, _col2
+                  Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: _col0 (type: int), _col1 (type: int)
+                    sort order: ++
+                    Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                    Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col2 (type: bigint)
+        Union 3 
+            Vertex: Union 3
+
+  Stage: Stage-0
+    Fetch Operator
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: explain select * from b intersect distinct (select * from a intersect distinct select * from b) intersect distinct select * from a intersect distinct select * from b
+PREHOOK: type: QUERY
+POSTHOOK: query: explain select * from b intersect distinct (select * from a intersect distinct select * from b) intersect distinct select * from a intersect distinct select * from b
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Tez
+#### A masked pattern was here ####
+      Edges:
+        Reducer 10 <- Map 9 (SIMPLE_EDGE), Union 3 (CONTAINS)
+        Reducer 12 <- Map 11 (SIMPLE_EDGE), Union 3 (CONTAINS)
+        Reducer 2 <- Map 1 (SIMPLE_EDGE), Union 3 (CONTAINS)
+        Reducer 4 <- Union 3 (SIMPLE_EDGE)
+        Reducer 6 <- Map 5 (SIMPLE_EDGE), Union 3 (CONTAINS)
+        Reducer 8 <- Map 7 (SIMPLE_EDGE), Union 3 (CONTAINS)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int), value (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                    Group By Operator
+                      aggregations: count(1)
+                      keys: _col0 (type: int), _col1 (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1, _col2
+                      Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col2 (type: bigint)
+            Execution mode: llap
+            LLAP IO: no inputs
+        Map 11 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int), value (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                    Group By Operator
+                      aggregations: count(1)
+                      keys: _col0 (type: int), _col1 (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1, _col2
+                      Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col2 (type: bigint)
+            Execution mode: llap
+            LLAP IO: no inputs
+        Map 5 
+            Map Operator Tree:
+                TableScan
+                  alias: a
+                  Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int), value (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                    Group By Operator
+                      aggregations: count(1)
+                      keys: _col0 (type: int), _col1 (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1, _col2
+                      Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col2 (type: bigint)
+            Execution mode: llap
+            LLAP IO: no inputs
+        Map 7 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int), value (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                    Group By Operator
+                      aggregations: count(1)
+                      keys: _col0 (type: int), _col1 (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1, _col2
+                      Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col2 (type: bigint)
+            Execution mode: llap
+            LLAP IO: no inputs
+        Map 9 
+            Map Operator Tree:
+                TableScan
+                  alias: a
+                  Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int), value (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                    Group By Operator
+                      aggregations: count(1)
+                      keys: _col0 (type: int), _col1 (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1, _col2
+                      Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col2 (type: bigint)
+            Execution mode: llap
+            LLAP IO: no inputs
+        Reducer 10 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: count(_col2)
+                  keys: _col0 (type: int), _col1 (type: int)
+                  mode: hash
+                  outputColumnNames: _col0, _col1, _col2
+                  Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: _col0 (type: int), _col1 (type: int)
+                    sort order: ++
+                    Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                    Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col2 (type: bigint)
+        Reducer 12 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 1 Data size: 3 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: count(_col2)
+                  keys: _col0 (type: int), _col1 (type: int)
+                  mode: hash
+                  outputColumnNames: _col0, _col1, _col2
+                  Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: _col0 (type: int), _col1 (type: int)
+                    sort order: ++
+                    Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                    Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col2 (type: bigint)
+        Reducer 2 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 1 Data size: 3 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: count(_col2)
+                  keys: _col0 (type: int), _col1 (type: int)
+                  mode: hash
+                  outputColumnNames: _col0, _col1, _col2
+                  Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: _col0 (type: int), _col1 (type: int)
+                    sort order: ++
+                    Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                    Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col2 (type: bigint)
+        Reducer 4 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 3 Data size: 9 Basic stats: COMPLETE Column stats: NONE
+                Filter Operator
+                  predicate: (_col2 = 5) (type: boolean)
+                  Statistics: Num rows: 1 Data size: 3 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: _col0 (type: int), _col1 (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 1 Data size: 3 Basic stats: COMPLETE Column stats: NONE
+                    File Output Operator
+                      compressed: false
+                      Statistics: Num rows: 1 Data size: 3 Basic stats: COMPLETE Column stats: NONE
+                      table:
+                          input format: org.apache.hadoop.mapred.SequenceFileInputFormat
+                          output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
+                          serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+        Reducer 6 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: count(_col2)
+                  keys: _col0 (type: int), _col1 (type: int)
+                  mode: hash
+                  outputColumnNames: _col0, _col1, _col2
+                  Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: _col0 (type: int), _col1 (type: int)
+                    sort order: ++
+                    Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                    Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col2 (type: bigint)
+        Reducer 8 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 1 Data size: 3 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: count(_col2)
+                  keys: _col0 (type: int), _col1 (type: int)
+                  mode: hash
+                  outputColumnNames: _col0, _col1, _col2
+                  Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: _col0 (type: int), _col1 (type: int)
+                    sort order: ++
+                    Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                    Statistics: Num rows: 7 Data size: 21 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col2 (type: bigint)
+        Union 3 
+            Vertex: Union 3
+
+  Stage: Stage-0
+    Fetch Operator
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: explain select * from b intersect distinct (select * from a intersect all select * from b)
+PREHOOK: type: QUERY
+POSTHOOK: query: explain select * from b intersect distinct (select * from a intersect all select * from b)
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Tez
+#### A masked pattern was here ####
+      Edges:
+        Reducer 2 <- Map 1 (SIMPLE_EDGE), Union 3 (CONTAINS)
+        Reducer 4 <- Union 3 (SIMPLE_EDGE)
+        Reducer 6 <- Map 5 (SIMPLE_EDGE), Union 3 (CONTAINS)
+        Reducer 8 <- Map 7 (SIMPLE_EDGE), Union 3 (CONTAINS)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int), value (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                    Group By Operator
+                      aggregations: count(1)
+                      keys: _col0 (type: int), _col1 (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1, _col2
+                      Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col2 (type: bigint)
+            Execution mode: llap
+            LLAP IO: no inputs
+        Map 5 
+            Map Operator Tree:
+                TableScan
+                  alias: a
+                  Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int), value (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                    Group By Operator
+                      aggregations: count(1)
+                      keys: _col0 (type: int), _col1 (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1, _col2
+                      Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col2 (type: bigint)
+            Execution mode: llap
+            LLAP IO: no inputs
+        Map 7 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int), value (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                    Group By Operator
+                      aggregations: count(1)
+                      keys: _col0 (type: int), _col1 (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1, _col2
+                      Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col2 (type: bigint)
+            Execution mode: llap
+            LLAP IO: no inputs
+        Reducer 2 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 1 Data size: 3 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: count(_col2)
+                  keys: _col0 (type: int), _col1 (type: int)
+                  mode: hash
+                  outputColumnNames: _col0, _col1, _col2
+                  Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: _col0 (type: int), _col1 (type: int)
+                    sort order: ++
+                    Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                    Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col2 (type: bigint)
+        Reducer 4 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                Filter Operator
+                  predicate: (_col2 = 3) (type: boolean)
+                  Statistics: Num rows: 1 Data size: 3 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: _col0 (type: int), _col1 (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 1 Data size: 3 Basic stats: COMPLETE Column stats: NONE
+                    File Output Operator
+                      compressed: false
+                      Statistics: Num rows: 1 Data size: 3 Basic stats: COMPLETE Column stats: NONE
+                      table:
+                          input format: org.apache.hadoop.mapred.SequenceFileInputFormat
+                          output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
+                          serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+        Reducer 6 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: count(_col2)
+                  keys: _col0 (type: int), _col1 (type: int)
+                  mode: hash
+                  outputColumnNames: _col0, _col1, _col2
+                  Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: _col0 (type: int), _col1 (type: int)
+                    sort order: ++
+                    Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                    Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col2 (type: bigint)
+        Reducer 8 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 1 Data size: 3 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: count(_col2)
+                  keys: _col0 (type: int), _col1 (type: int)
+                  mode: hash
+                  outputColumnNames: _col0, _col1, _col2
+                  Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: _col0 (type: int), _col1 (type: int)
+                    sort order: ++
+                    Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                    Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col2 (type: bigint)
+        Union 3 
+            Vertex: Union 3
+
+  Stage: Stage-0
+    Fetch Operator
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: explain select * from b intersect all (select * from a intersect all select * from b)
+PREHOOK: type: QUERY
+POSTHOOK: query: explain select * from b intersect all (select * from a intersect all select * from b)
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Tez
+#### A masked pattern was here ####
+      Edges:
+        Reducer 2 <- Map 1 (SIMPLE_EDGE), Union 3 (CONTAINS)
+        Reducer 4 <- Union 3 (SIMPLE_EDGE)
+        Reducer 6 <- Map 5 (SIMPLE_EDGE), Union 3 (CONTAINS)
+        Reducer 8 <- Map 7 (SIMPLE_EDGE), Union 3 (CONTAINS)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int), value (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                    Group By Operator
+                      aggregations: count(1)
+                      keys: _col0 (type: int), _col1 (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1, _col2
+                      Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col2 (type: bigint)
+            Execution mode: llap
+            LLAP IO: no inputs
+        Map 5 
+            Map Operator Tree:
+                TableScan
+                  alias: a
+                  Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int), value (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                    Group By Operator
+                      aggregations: count(1)
+                      keys: _col0 (type: int), _col1 (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1, _col2
+                      Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col2 (type: bigint)
+            Execution mode: llap
+            LLAP IO: no inputs
+        Map 7 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: int), value (type: int)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                    Group By Operator
+                      aggregations: count(1)
+                      keys: _col0 (type: int), _col1 (type: int)
+                      mode: hash
+                      outputColumnNames: _col0, _col1, _col2
+                      Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: int), _col1 (type: int)
+                        sort order: ++
+                        Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                        Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stats: NONE
+                        value expressions: _col2 (type: bigint)
+            Execution mode: llap
+            LLAP IO: no inputs
+        Reducer 2 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 1 Data size: 3 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: min(_col2), count(_col2)
+                  keys: _col0 (type: int), _col1 (type: int)
+                  mode: hash
+                  outputColumnNames: _col0, _col1, _col2, _col3
+                  Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    key expressions: _col0 (type: int), _col1 (type: int)
+                    sort order: ++
+                    Map-reduce partition columns: _col0 (type: int), _col1 (type: int)
+                    Statistics: Num rows: 4 Data size: 12 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col2 (type: bigint), _col3 (type: bigint)
+        Reducer 4 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: min(VALUE._col0), count(VALUE._col1)
+                keys: KEY._col0 (type: int), KEY._col1 (type: int)
+                mode: mergepartial
+                outputColumnNames: _col0, _col1, _col2, _col3
+                Statistics: Num rows: 2 Data size: 6 Basic stats: COMPLETE Column stat

<TRUNCATED>