http://git-wip-us.apache.org/repos/asf/hive/blob/975a49b6/ql/src/test/results/clientpositive/tez/auto_sortmerge_join_9.q.out
----------------------------------------------------------------------
diff --git a/ql/src/test/results/clientpositive/tez/auto_sortmerge_join_9.q.out 
b/ql/src/test/results/clientpositive/tez/auto_sortmerge_join_9.q.out
deleted file mode 100644
index c5ffab0..0000000
--- a/ql/src/test/results/clientpositive/tez/auto_sortmerge_join_9.q.out
+++ /dev/null
@@ -1,3567 +0,0 @@
-PREHOOK: query: -- SORT_QUERY_RESULTS
-
-CREATE TABLE tbl1(key int, value string) CLUSTERED BY (key) SORTED BY (key) 
INTO 2 BUCKETS
-PREHOOK: type: CREATETABLE
-PREHOOK: Output: database:default
-PREHOOK: Output: default@tbl1
-POSTHOOK: query: -- SORT_QUERY_RESULTS
-
-CREATE TABLE tbl1(key int, value string) CLUSTERED BY (key) SORTED BY (key) 
INTO 2 BUCKETS
-POSTHOOK: type: CREATETABLE
-POSTHOOK: Output: database:default
-POSTHOOK: Output: default@tbl1
-PREHOOK: query: CREATE TABLE tbl2(key int, value string) CLUSTERED BY (key) 
SORTED BY (key) INTO 2 BUCKETS
-PREHOOK: type: CREATETABLE
-PREHOOK: Output: database:default
-PREHOOK: Output: default@tbl2
-POSTHOOK: query: CREATE TABLE tbl2(key int, value string) CLUSTERED BY (key) 
SORTED BY (key) INTO 2 BUCKETS
-POSTHOOK: type: CREATETABLE
-POSTHOOK: Output: database:default
-POSTHOOK: Output: default@tbl2
-PREHOOK: query: insert overwrite table tbl1
-select * from src where key < 10
-PREHOOK: type: QUERY
-PREHOOK: Input: default@src
-PREHOOK: Output: default@tbl1
-POSTHOOK: query: insert overwrite table tbl1
-select * from src where key < 10
-POSTHOOK: type: QUERY
-POSTHOOK: Input: default@src
-POSTHOOK: Output: default@tbl1
-POSTHOOK: Lineage: tbl1.key EXPRESSION [(src)src.FieldSchema(name:key, 
type:string, comment:default), ]
-POSTHOOK: Lineage: tbl1.value SIMPLE [(src)src.FieldSchema(name:value, 
type:string, comment:default), ]
-PREHOOK: query: insert overwrite table tbl2
-select * from src where key < 10
-PREHOOK: type: QUERY
-PREHOOK: Input: default@src
-PREHOOK: Output: default@tbl2
-POSTHOOK: query: insert overwrite table tbl2
-select * from src where key < 10
-POSTHOOK: type: QUERY
-POSTHOOK: Input: default@src
-POSTHOOK: Output: default@tbl2
-POSTHOOK: Lineage: tbl2.key EXPRESSION [(src)src.FieldSchema(name:key, 
type:string, comment:default), ]
-POSTHOOK: Lineage: tbl2.value SIMPLE [(src)src.FieldSchema(name:value, 
type:string, comment:default), ]
-PREHOOK: query: -- The join is being performed as part of sub-query. It should 
be converted to a sort-merge join
-explain
-select count(*) from (
-  select a.key as key, a.value as val1, b.value as val2 from tbl1 a join tbl2 
b on a.key = b.key
-) subq1
-PREHOOK: type: QUERY
-POSTHOOK: query: -- The join is being performed as part of sub-query. It 
should be converted to a sort-merge join
-explain
-select count(*) from (
-  select a.key as key, a.value as val1, b.value as val2 from tbl1 a join tbl2 
b on a.key = b.key
-) subq1
-POSTHOOK: type: QUERY
-STAGE DEPENDENCIES:
-  Stage-1 is a root stage
-  Stage-0 depends on stages: Stage-1
-
-STAGE PLANS:
-  Stage: Stage-1
-    Tez
-#### A masked pattern was here ####
-      Edges:
-        Map 1 <- Map 3 (BROADCAST_EDGE)
-        Reducer 2 <- Map 1 (SIMPLE_EDGE)
-#### A masked pattern was here ####
-      Vertices:
-        Map 1 
-            Map Operator Tree:
-                TableScan
-                  alias: a
-                  Statistics: Num rows: 10 Data size: 70 Basic stats: COMPLETE 
Column stats: NONE
-                  Filter Operator
-                    predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 10 Data size: 70 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 10 Data size: 70 Basic stats: 
COMPLETE Column stats: NONE
-                      Map Join Operator
-                        condition map:
-                             Inner Join 0 to 1
-                        keys:
-                          0 _col0 (type: int)
-                          1 _col0 (type: int)
-                        input vertices:
-                          1 Map 3
-                        Statistics: Num rows: 11 Data size: 77 Basic stats: 
COMPLETE Column stats: NONE
-                        HybridGraceHashJoin: true
-                        Group By Operator
-                          aggregations: count()
-                          mode: hash
-                          outputColumnNames: _col0
-                          Statistics: Num rows: 1 Data size: 8 Basic stats: 
COMPLETE Column stats: NONE
-                          Reduce Output Operator
-                            sort order: 
-                            Statistics: Num rows: 1 Data size: 8 Basic stats: 
COMPLETE Column stats: NONE
-                            value expressions: _col0 (type: bigint)
-        Map 3 
-            Map Operator Tree:
-                TableScan
-                  alias: b
-                  Statistics: Num rows: 10 Data size: 70 Basic stats: COMPLETE 
Column stats: NONE
-                  Filter Operator
-                    predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 10 Data size: 70 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 10 Data size: 70 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: 10 Data size: 70 Basic stats: 
COMPLETE Column stats: NONE
-        Reducer 2 
-            Reduce Operator Tree:
-              Group By Operator
-                aggregations: count(VALUE._col0)
-                mode: mergepartial
-                outputColumnNames: _col0
-                Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE 
Column stats: NONE
-                File Output Operator
-                  compressed: false
-                  Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE 
Column stats: NONE
-                  table:
-                      input format: 
org.apache.hadoop.mapred.SequenceFileInputFormat
-                      output format: 
org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
-                      serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
-
-  Stage: Stage-0
-    Fetch Operator
-      limit: -1
-      Processor Tree:
-        ListSink
-
-PREHOOK: query: select count(*) from (
-  select a.key as key, a.value as val1, b.value as val2 from tbl1 a join tbl2 
b on a.key = b.key
-) subq1
-PREHOOK: type: QUERY
-PREHOOK: Input: default@tbl1
-PREHOOK: Input: default@tbl2
-#### A masked pattern was here ####
-POSTHOOK: query: select count(*) from (
-  select a.key as key, a.value as val1, b.value as val2 from tbl1 a join tbl2 
b on a.key = b.key
-) subq1
-POSTHOOK: type: QUERY
-POSTHOOK: Input: default@tbl1
-POSTHOOK: Input: default@tbl2
-#### A masked pattern was here ####
-22
-PREHOOK: query: -- The join is being performed as part of sub-query. It should 
be converted to a sort-merge join
-explain
-select key, count(*) from 
-(
-  select a.key as key, a.value as val1, b.value as val2 from tbl1 a join tbl2 
b on a.key = b.key
-) subq1
-group by key
-PREHOOK: type: QUERY
-POSTHOOK: query: -- The join is being performed as part of sub-query. It 
should be converted to a sort-merge join
-explain
-select key, count(*) from 
-(
-  select a.key as key, a.value as val1, b.value as val2 from tbl1 a join tbl2 
b on a.key = b.key
-) subq1
-group by key
-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:
-        Map 1 <- Map 3 (BROADCAST_EDGE)
-        Reducer 2 <- Map 1 (SIMPLE_EDGE)
-#### A masked pattern was here ####
-      Vertices:
-        Map 1 
-            Map Operator Tree:
-                TableScan
-                  alias: a
-                  Statistics: Num rows: 10 Data size: 70 Basic stats: COMPLETE 
Column stats: NONE
-                  Filter Operator
-                    predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 10 Data size: 70 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 10 Data size: 70 Basic stats: 
COMPLETE Column stats: NONE
-                      Map Join Operator
-                        condition map:
-                             Inner Join 0 to 1
-                        keys:
-                          0 _col0 (type: int)
-                          1 _col0 (type: int)
-                        outputColumnNames: _col0
-                        input vertices:
-                          1 Map 3
-                        Statistics: Num rows: 11 Data size: 77 Basic stats: 
COMPLETE Column stats: NONE
-                        HybridGraceHashJoin: true
-                        Group By Operator
-                          aggregations: count()
-                          keys: _col0 (type: int)
-                          mode: hash
-                          outputColumnNames: _col0, _col1
-                          Statistics: Num rows: 11 Data size: 77 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: 11 Data size: 77 Basic 
stats: COMPLETE Column stats: NONE
-                            value expressions: _col1 (type: bigint)
-        Map 3 
-            Map Operator Tree:
-                TableScan
-                  alias: b
-                  Statistics: Num rows: 10 Data size: 70 Basic stats: COMPLETE 
Column stats: NONE
-                  Filter Operator
-                    predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 10 Data size: 70 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 10 Data size: 70 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: 10 Data size: 70 Basic stats: 
COMPLETE Column stats: NONE
-        Reducer 2 
-            Reduce Operator Tree:
-              Group By Operator
-                aggregations: count(VALUE._col0)
-                keys: KEY._col0 (type: int)
-                mode: mergepartial
-                outputColumnNames: _col0, _col1
-                Statistics: Num rows: 5 Data size: 35 Basic stats: COMPLETE 
Column stats: NONE
-                File Output Operator
-                  compressed: false
-                  Statistics: Num rows: 5 Data size: 35 Basic stats: COMPLETE 
Column stats: NONE
-                  table:
-                      input format: 
org.apache.hadoop.mapred.SequenceFileInputFormat
-                      output format: 
org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
-                      serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
-
-  Stage: Stage-0
-    Fetch Operator
-      limit: -1
-      Processor Tree:
-        ListSink
-
-PREHOOK: query: select key, count(*) from 
-(
-  select a.key as key, a.value as val1, b.value as val2 from tbl1 a join tbl2 
b on a.key = b.key
-) subq1
-group by key
-PREHOOK: type: QUERY
-PREHOOK: Input: default@tbl1
-PREHOOK: Input: default@tbl2
-#### A masked pattern was here ####
-POSTHOOK: query: select key, count(*) from 
-(
-  select a.key as key, a.value as val1, b.value as val2 from tbl1 a join tbl2 
b on a.key = b.key
-) subq1
-group by key
-POSTHOOK: type: QUERY
-POSTHOOK: Input: default@tbl1
-POSTHOOK: Input: default@tbl2
-#### A masked pattern was here ####
-0      9
-2      1
-4      1
-5      9
-8      1
-9      1
-PREHOOK: query: -- The join is being performed as part of more than one 
sub-query. It should be converted to a sort-merge join
-explain
-select count(*) from
-(
-  select key, count(*) from 
-  (
-    select a.key as key, a.value as val1, b.value as val2 from tbl1 a join 
tbl2 b on a.key = b.key
-  ) subq1
-  group by key
-) subq2
-PREHOOK: type: QUERY
-POSTHOOK: query: -- The join is being performed as part of more than one 
sub-query. It should be converted to a sort-merge join
-explain
-select count(*) from
-(
-  select key, count(*) from 
-  (
-    select a.key as key, a.value as val1, b.value as val2 from tbl1 a join 
tbl2 b on a.key = b.key
-  ) subq1
-  group by key
-) subq2
-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:
-        Map 1 <- Map 4 (BROADCAST_EDGE)
-        Reducer 2 <- Map 1 (SIMPLE_EDGE)
-        Reducer 3 <- Reducer 2 (SIMPLE_EDGE)
-#### A masked pattern was here ####
-      Vertices:
-        Map 1 
-            Map Operator Tree:
-                TableScan
-                  alias: a
-                  Statistics: Num rows: 10 Data size: 70 Basic stats: COMPLETE 
Column stats: NONE
-                  Filter Operator
-                    predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 10 Data size: 70 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 10 Data size: 70 Basic stats: 
COMPLETE Column stats: NONE
-                      Map Join Operator
-                        condition map:
-                             Inner Join 0 to 1
-                        keys:
-                          0 _col0 (type: int)
-                          1 _col0 (type: int)
-                        outputColumnNames: _col0
-                        input vertices:
-                          1 Map 4
-                        Statistics: Num rows: 11 Data size: 77 Basic stats: 
COMPLETE Column stats: NONE
-                        HybridGraceHashJoin: true
-                        Group By Operator
-                          keys: _col0 (type: int)
-                          mode: hash
-                          outputColumnNames: _col0
-                          Statistics: Num rows: 11 Data size: 77 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: 11 Data size: 77 Basic 
stats: COMPLETE Column stats: NONE
-        Map 4 
-            Map Operator Tree:
-                TableScan
-                  alias: b
-                  Statistics: Num rows: 10 Data size: 70 Basic stats: COMPLETE 
Column stats: NONE
-                  Filter Operator
-                    predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 10 Data size: 70 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 10 Data size: 70 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: 10 Data size: 70 Basic stats: 
COMPLETE Column stats: NONE
-        Reducer 2 
-            Reduce Operator Tree:
-              Group By Operator
-                keys: KEY._col0 (type: int)
-                mode: mergepartial
-                outputColumnNames: _col0
-                Statistics: Num rows: 5 Data size: 35 Basic stats: COMPLETE 
Column stats: NONE
-                Select Operator
-                  Statistics: Num rows: 5 Data size: 35 Basic stats: COMPLETE 
Column stats: NONE
-                  Group By Operator
-                    aggregations: count()
-                    mode: hash
-                    outputColumnNames: _col0
-                    Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE 
Column stats: NONE
-                    Reduce Output Operator
-                      sort order: 
-                      Statistics: Num rows: 1 Data size: 8 Basic stats: 
COMPLETE Column stats: NONE
-                      value expressions: _col0 (type: bigint)
-        Reducer 3 
-            Reduce Operator Tree:
-              Group By Operator
-                aggregations: count(VALUE._col0)
-                mode: mergepartial
-                outputColumnNames: _col0
-                Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE 
Column stats: NONE
-                File Output Operator
-                  compressed: false
-                  Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE 
Column stats: NONE
-                  table:
-                      input format: 
org.apache.hadoop.mapred.SequenceFileInputFormat
-                      output format: 
org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
-                      serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
-
-  Stage: Stage-0
-    Fetch Operator
-      limit: -1
-      Processor Tree:
-        ListSink
-
-PREHOOK: query: select count(*) from
-(
-  select key, count(*) from 
-  (
-    select a.key as key, a.value as val1, b.value as val2 from tbl1 a join 
tbl2 b on a.key = b.key
-  ) subq1
-  group by key
-) subq2
-PREHOOK: type: QUERY
-PREHOOK: Input: default@tbl1
-PREHOOK: Input: default@tbl2
-#### A masked pattern was here ####
-POSTHOOK: query: select count(*) from
-(
-  select key, count(*) from 
-  (
-    select a.key as key, a.value as val1, b.value as val2 from tbl1 a join 
tbl2 b on a.key = b.key
-  ) subq1
-  group by key
-) subq2
-POSTHOOK: type: QUERY
-POSTHOOK: Input: default@tbl1
-POSTHOOK: Input: default@tbl2
-#### A masked pattern was here ####
-6
-PREHOOK: query: -- A join is being performed across different sub-queries, 
where a join is being performed in each of them.
--- Each sub-query should be converted to a sort-merge join.
-explain
-select src1.key, src1.cnt1, src2.cnt1 from
-(
-  select key, count(*) as cnt1 from 
-  (
-    select a.key as key, a.value as val1, b.value as val2 from tbl1 a join 
tbl2 b on a.key = b.key
-  ) subq1 group by key
-) src1
-join
-(
-  select key, count(*) as cnt1 from 
-  (
-    select a.key as key, a.value as val1, b.value as val2 from tbl1 a join 
tbl2 b on a.key = b.key
-  ) subq2 group by key
-) src2
-on src1.key = src2.key
-PREHOOK: type: QUERY
-POSTHOOK: query: -- A join is being performed across different sub-queries, 
where a join is being performed in each of them.
--- Each sub-query should be converted to a sort-merge join.
-explain
-select src1.key, src1.cnt1, src2.cnt1 from
-(
-  select key, count(*) as cnt1 from 
-  (
-    select a.key as key, a.value as val1, b.value as val2 from tbl1 a join 
tbl2 b on a.key = b.key
-  ) subq1 group by key
-) src1
-join
-(
-  select key, count(*) as cnt1 from 
-  (
-    select a.key as key, a.value as val1, b.value as val2 from tbl1 a join 
tbl2 b on a.key = b.key
-  ) subq2 group by key
-) src2
-on src1.key = src2.key
-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:
-        Map 1 <- Map 3 (BROADCAST_EDGE)
-        Map 4 <- Map 6 (BROADCAST_EDGE)
-        Reducer 2 <- Map 1 (SIMPLE_EDGE), Reducer 5 (BROADCAST_EDGE)
-        Reducer 5 <- Map 4 (SIMPLE_EDGE)
-#### A masked pattern was here ####
-      Vertices:
-        Map 1 
-            Map Operator Tree:
-                TableScan
-                  alias: a
-                  Statistics: Num rows: 10 Data size: 70 Basic stats: COMPLETE 
Column stats: NONE
-                  Filter Operator
-                    predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 10 Data size: 70 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 10 Data size: 70 Basic stats: 
COMPLETE Column stats: NONE
-                      Map Join Operator
-                        condition map:
-                             Inner Join 0 to 1
-                        keys:
-                          0 _col0 (type: int)
-                          1 _col0 (type: int)
-                        outputColumnNames: _col0
-                        input vertices:
-                          1 Map 3
-                        Statistics: Num rows: 11 Data size: 77 Basic stats: 
COMPLETE Column stats: NONE
-                        HybridGraceHashJoin: true
-                        Group By Operator
-                          aggregations: count()
-                          keys: _col0 (type: int)
-                          mode: hash
-                          outputColumnNames: _col0, _col1
-                          Statistics: Num rows: 11 Data size: 77 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: 11 Data size: 77 Basic 
stats: COMPLETE Column stats: NONE
-                            value expressions: _col1 (type: bigint)
-        Map 3 
-            Map Operator Tree:
-                TableScan
-                  alias: b
-                  Statistics: Num rows: 10 Data size: 70 Basic stats: COMPLETE 
Column stats: NONE
-                  Filter Operator
-                    predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 10 Data size: 70 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 10 Data size: 70 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: 10 Data size: 70 Basic stats: 
COMPLETE Column stats: NONE
-        Map 4 
-            Map Operator Tree:
-                TableScan
-                  alias: a
-                  Statistics: Num rows: 10 Data size: 70 Basic stats: COMPLETE 
Column stats: NONE
-                  Filter Operator
-                    predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 10 Data size: 70 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 10 Data size: 70 Basic stats: 
COMPLETE Column stats: NONE
-                      Map Join Operator
-                        condition map:
-                             Inner Join 0 to 1
-                        keys:
-                          0 _col0 (type: int)
-                          1 _col0 (type: int)
-                        outputColumnNames: _col0
-                        input vertices:
-                          1 Map 6
-                        Statistics: Num rows: 11 Data size: 77 Basic stats: 
COMPLETE Column stats: NONE
-                        HybridGraceHashJoin: true
-                        Group By Operator
-                          aggregations: count()
-                          keys: _col0 (type: int)
-                          mode: hash
-                          outputColumnNames: _col0, _col1
-                          Statistics: Num rows: 11 Data size: 77 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: 11 Data size: 77 Basic 
stats: COMPLETE Column stats: NONE
-                            value expressions: _col1 (type: bigint)
-        Map 6 
-            Map Operator Tree:
-                TableScan
-                  alias: b
-                  Statistics: Num rows: 10 Data size: 70 Basic stats: COMPLETE 
Column stats: NONE
-                  Filter Operator
-                    predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 10 Data size: 70 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 10 Data size: 70 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: 10 Data size: 70 Basic stats: 
COMPLETE Column stats: NONE
-        Reducer 2 
-            Reduce Operator Tree:
-              Group By Operator
-                aggregations: count(VALUE._col0)
-                keys: KEY._col0 (type: int)
-                mode: mergepartial
-                outputColumnNames: _col0, _col1
-                Statistics: Num rows: 5 Data size: 35 Basic stats: COMPLETE 
Column stats: NONE
-                Map Join Operator
-                  condition map:
-                       Inner Join 0 to 1
-                  keys:
-                    0 _col0 (type: int)
-                    1 _col0 (type: int)
-                  outputColumnNames: _col0, _col1, _col3
-                  input vertices:
-                    1 Reducer 5
-                  Statistics: Num rows: 5 Data size: 38 Basic stats: COMPLETE 
Column stats: NONE
-                  HybridGraceHashJoin: true
-                  Select Operator
-                    expressions: _col0 (type: int), _col1 (type: bigint), 
_col3 (type: bigint)
-                    outputColumnNames: _col0, _col1, _col2
-                    Statistics: Num rows: 5 Data size: 38 Basic stats: 
COMPLETE Column stats: NONE
-                    File Output Operator
-                      compressed: false
-                      Statistics: Num rows: 5 Data size: 38 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 5 
-            Reduce Operator Tree:
-              Group By Operator
-                aggregations: count(VALUE._col0)
-                keys: KEY._col0 (type: int)
-                mode: mergepartial
-                outputColumnNames: _col0, _col1
-                Statistics: Num rows: 5 Data size: 35 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: 5 Data size: 35 Basic stats: COMPLETE 
Column stats: NONE
-                  value expressions: _col1 (type: bigint)
-
-  Stage: Stage-0
-    Fetch Operator
-      limit: -1
-      Processor Tree:
-        ListSink
-
-PREHOOK: query: select src1.key, src1.cnt1, src2.cnt1 from
-(
-  select key, count(*) as cnt1 from 
-  (
-    select a.key as key, a.value as val1, b.value as val2 from tbl1 a join 
tbl2 b on a.key = b.key
-  ) subq1 group by key
-) src1
-join
-(
-  select key, count(*) as cnt1 from 
-  (
-    select a.key as key, a.value as val1, b.value as val2 from tbl1 a join 
tbl2 b on a.key = b.key
-  ) subq2 group by key
-) src2
-on src1.key = src2.key
-PREHOOK: type: QUERY
-PREHOOK: Input: default@tbl1
-PREHOOK: Input: default@tbl2
-#### A masked pattern was here ####
-POSTHOOK: query: select src1.key, src1.cnt1, src2.cnt1 from
-(
-  select key, count(*) as cnt1 from 
-  (
-    select a.key as key, a.value as val1, b.value as val2 from tbl1 a join 
tbl2 b on a.key = b.key
-  ) subq1 group by key
-) src1
-join
-(
-  select key, count(*) as cnt1 from 
-  (
-    select a.key as key, a.value as val1, b.value as val2 from tbl1 a join 
tbl2 b on a.key = b.key
-  ) subq2 group by key
-) src2
-on src1.key = src2.key
-POSTHOOK: type: QUERY
-POSTHOOK: Input: default@tbl1
-POSTHOOK: Input: default@tbl2
-#### A masked pattern was here ####
-0      9       9
-2      1       1
-4      1       1
-5      9       9
-8      1       1
-9      1       1
-PREHOOK: query: -- The subquery itself is being joined. Since the sub-query 
only contains selects and filters, it should 
--- be converted to a sort-merge join.
-explain
-select count(*) from 
-  (select a.key as key, a.value as value from tbl1 a where key < 6) subq1 
-    join
-  (select a.key as key, a.value as value from tbl2 a where key < 6) subq2
-  on subq1.key = subq2.key
-PREHOOK: type: QUERY
-POSTHOOK: query: -- The subquery itself is being joined. Since the sub-query 
only contains selects and filters, it should 
--- be converted to a sort-merge join.
-explain
-select count(*) from 
-  (select a.key as key, a.value as value from tbl1 a where key < 6) subq1 
-    join
-  (select a.key as key, a.value as value from tbl2 a where key < 6) subq2
-  on subq1.key = subq2.key
-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:
-        Map 1 <- Map 3 (BROADCAST_EDGE)
-        Reducer 2 <- Map 1 (SIMPLE_EDGE)
-#### A masked pattern was here ####
-      Vertices:
-        Map 1 
-            Map Operator Tree:
-                TableScan
-                  alias: a
-                  Statistics: Num rows: 10 Data size: 70 Basic stats: COMPLETE 
Column stats: NONE
-                  Filter Operator
-                    predicate: (key < 6) (type: boolean)
-                    Statistics: Num rows: 3 Data size: 21 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 3 Data size: 21 Basic stats: 
COMPLETE Column stats: NONE
-                      Map Join Operator
-                        condition map:
-                             Inner Join 0 to 1
-                        keys:
-                          0 _col0 (type: int)
-                          1 _col0 (type: int)
-                        input vertices:
-                          1 Map 3
-                        Statistics: Num rows: 3 Data size: 23 Basic stats: 
COMPLETE Column stats: NONE
-                        HybridGraceHashJoin: true
-                        Group By Operator
-                          aggregations: count()
-                          mode: hash
-                          outputColumnNames: _col0
-                          Statistics: Num rows: 1 Data size: 8 Basic stats: 
COMPLETE Column stats: NONE
-                          Reduce Output Operator
-                            sort order: 
-                            Statistics: Num rows: 1 Data size: 8 Basic stats: 
COMPLETE Column stats: NONE
-                            value expressions: _col0 (type: bigint)
-        Map 3 
-            Map Operator Tree:
-                TableScan
-                  alias: a
-                  Statistics: Num rows: 10 Data size: 70 Basic stats: COMPLETE 
Column stats: NONE
-                  Filter Operator
-                    predicate: (key < 6) (type: boolean)
-                    Statistics: Num rows: 3 Data size: 21 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 3 Data size: 21 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: 3 Data size: 21 Basic stats: 
COMPLETE Column stats: NONE
-        Reducer 2 
-            Reduce Operator Tree:
-              Group By Operator
-                aggregations: count(VALUE._col0)
-                mode: mergepartial
-                outputColumnNames: _col0
-                Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE 
Column stats: NONE
-                File Output Operator
-                  compressed: false
-                  Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE 
Column stats: NONE
-                  table:
-                      input format: 
org.apache.hadoop.mapred.SequenceFileInputFormat
-                      output format: 
org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
-                      serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
-
-  Stage: Stage-0
-    Fetch Operator
-      limit: -1
-      Processor Tree:
-        ListSink
-
-PREHOOK: query: select count(*) from 
-  (select a.key as key, a.value as value from tbl1 a where key < 6) subq1 
-    join
-  (select a.key as key, a.value as value from tbl2 a where key < 6) subq2
-  on subq1.key = subq2.key
-PREHOOK: type: QUERY
-PREHOOK: Input: default@tbl1
-PREHOOK: Input: default@tbl2
-#### A masked pattern was here ####
-POSTHOOK: query: select count(*) from 
-  (select a.key as key, a.value as value from tbl1 a where key < 6) subq1 
-    join
-  (select a.key as key, a.value as value from tbl2 a where key < 6) subq2
-  on subq1.key = subq2.key
-POSTHOOK: type: QUERY
-POSTHOOK: Input: default@tbl1
-POSTHOOK: Input: default@tbl2
-#### A masked pattern was here ####
-20
-PREHOOK: query: -- The subquery itself is being joined. Since the sub-query 
only contains selects and filters, it should 
--- be converted to a sort-merge join, although there is more than one level of 
sub-query
-explain
-select count(*) from 
-  (
-  select * from
-    (
-      select a.key as key, a.value as value from tbl1 a where key < 8
-    ) subq1 
-  where key < 6
-  ) subq2
-  join tbl2 b
-  on subq2.key = b.key
-PREHOOK: type: QUERY
-POSTHOOK: query: -- The subquery itself is being joined. Since the sub-query 
only contains selects and filters, it should 
--- be converted to a sort-merge join, although there is more than one level of 
sub-query
-explain
-select count(*) from 
-  (
-  select * from
-    (
-      select a.key as key, a.value as value from tbl1 a where key < 8
-    ) subq1 
-  where key < 6
-  ) subq2
-  join tbl2 b
-  on subq2.key = b.key
-POSTHOOK: type: QUERY
-STAGE DEPENDENCIES:
-  Stage-1 is a root stage
-  Stage-0 depends on stages: Stage-1
-
-STAGE PLANS:
-  Stage: Stage-1
-    Tez
-#### A masked pattern was here ####
-      Edges:
-        Map 1 <- Map 3 (BROADCAST_EDGE)
-        Reducer 2 <- Map 1 (SIMPLE_EDGE)
-#### A masked pattern was here ####
-      Vertices:
-        Map 1 
-            Map Operator Tree:
-                TableScan
-                  alias: a
-                  Statistics: Num rows: 10 Data size: 70 Basic stats: COMPLETE 
Column stats: NONE
-                  Filter Operator
-                    predicate: ((key < 8) and (key < 6)) (type: boolean)
-                    Statistics: Num rows: 1 Data size: 7 Basic stats: COMPLETE 
Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 1 Data size: 7 Basic stats: 
COMPLETE Column stats: NONE
-                      Map Join Operator
-                        condition map:
-                             Inner Join 0 to 1
-                        keys:
-                          0 _col0 (type: int)
-                          1 _col0 (type: int)
-                        input vertices:
-                          1 Map 3
-                        Statistics: Num rows: 1 Data size: 7 Basic stats: 
COMPLETE Column stats: NONE
-                        HybridGraceHashJoin: true
-                        Group By Operator
-                          aggregations: count()
-                          mode: hash
-                          outputColumnNames: _col0
-                          Statistics: Num rows: 1 Data size: 8 Basic stats: 
COMPLETE Column stats: NONE
-                          Reduce Output Operator
-                            sort order: 
-                            Statistics: Num rows: 1 Data size: 8 Basic stats: 
COMPLETE Column stats: NONE
-                            value expressions: _col0 (type: bigint)
-        Map 3 
-            Map Operator Tree:
-                TableScan
-                  alias: b
-                  Statistics: Num rows: 10 Data size: 70 Basic stats: COMPLETE 
Column stats: NONE
-                  Filter Operator
-                    predicate: ((key < 8) and (key < 6)) (type: boolean)
-                    Statistics: Num rows: 1 Data size: 7 Basic stats: COMPLETE 
Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 1 Data size: 7 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: 1 Data size: 7 Basic stats: 
COMPLETE Column stats: NONE
-        Reducer 2 
-            Reduce Operator Tree:
-              Group By Operator
-                aggregations: count(VALUE._col0)
-                mode: mergepartial
-                outputColumnNames: _col0
-                Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE 
Column stats: NONE
-                File Output Operator
-                  compressed: false
-                  Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE 
Column stats: NONE
-                  table:
-                      input format: 
org.apache.hadoop.mapred.SequenceFileInputFormat
-                      output format: 
org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
-                      serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
-
-  Stage: Stage-0
-    Fetch Operator
-      limit: -1
-      Processor Tree:
-        ListSink
-
-PREHOOK: query: select count(*) from 
-  (
-  select * from
-    (
-      select a.key as key, a.value as value from tbl1 a where key < 8
-    ) subq1 
-  where key < 6
-  ) subq2
-  join tbl2 b
-  on subq2.key = b.key
-PREHOOK: type: QUERY
-PREHOOK: Input: default@tbl1
-PREHOOK: Input: default@tbl2
-#### A masked pattern was here ####
-POSTHOOK: query: select count(*) from 
-  (
-  select * from
-    (
-      select a.key as key, a.value as value from tbl1 a where key < 8
-    ) subq1 
-  where key < 6
-  ) subq2
-  join tbl2 b
-  on subq2.key = b.key
-POSTHOOK: type: QUERY
-POSTHOOK: Input: default@tbl1
-POSTHOOK: Input: default@tbl2
-#### A masked pattern was here ####
-20
-PREHOOK: query: -- Both the tables are nested sub-queries i.e more then 1 
level of sub-query.
--- The join should be converted to a sort-merge join
-explain
-select count(*) from 
-  (
-  select * from
-    (
-      select a.key as key, a.value as value from tbl1 a where key < 8
-    ) subq1 
-  where key < 6
-  ) subq2
-  join
-  (
-  select * from
-    (
-      select a.key as key, a.value as value from tbl1 a where key < 8
-    ) subq3 
-  where key < 6
-  ) subq4
-  on subq2.key = subq4.key
-PREHOOK: type: QUERY
-POSTHOOK: query: -- Both the tables are nested sub-queries i.e more then 1 
level of sub-query.
--- The join should be converted to a sort-merge join
-explain
-select count(*) from 
-  (
-  select * from
-    (
-      select a.key as key, a.value as value from tbl1 a where key < 8
-    ) subq1 
-  where key < 6
-  ) subq2
-  join
-  (
-  select * from
-    (
-      select a.key as key, a.value as value from tbl1 a where key < 8
-    ) subq3 
-  where key < 6
-  ) subq4
-  on subq2.key = subq4.key
-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:
-        Map 1 <- Map 3 (BROADCAST_EDGE)
-        Reducer 2 <- Map 1 (SIMPLE_EDGE)
-#### A masked pattern was here ####
-      Vertices:
-        Map 1 
-            Map Operator Tree:
-                TableScan
-                  alias: a
-                  Statistics: Num rows: 10 Data size: 70 Basic stats: COMPLETE 
Column stats: NONE
-                  Filter Operator
-                    predicate: ((key < 8) and (key < 6)) (type: boolean)
-                    Statistics: Num rows: 1 Data size: 7 Basic stats: COMPLETE 
Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 1 Data size: 7 Basic stats: 
COMPLETE Column stats: NONE
-                      Map Join Operator
-                        condition map:
-                             Inner Join 0 to 1
-                        keys:
-                          0 _col0 (type: int)
-                          1 _col0 (type: int)
-                        input vertices:
-                          1 Map 3
-                        Statistics: Num rows: 1 Data size: 7 Basic stats: 
COMPLETE Column stats: NONE
-                        HybridGraceHashJoin: true
-                        Group By Operator
-                          aggregations: count()
-                          mode: hash
-                          outputColumnNames: _col0
-                          Statistics: Num rows: 1 Data size: 8 Basic stats: 
COMPLETE Column stats: NONE
-                          Reduce Output Operator
-                            sort order: 
-                            Statistics: Num rows: 1 Data size: 8 Basic stats: 
COMPLETE Column stats: NONE
-                            value expressions: _col0 (type: bigint)
-        Map 3 
-            Map Operator Tree:
-                TableScan
-                  alias: a
-                  Statistics: Num rows: 10 Data size: 70 Basic stats: COMPLETE 
Column stats: NONE
-                  Filter Operator
-                    predicate: ((key < 8) and (key < 6)) (type: boolean)
-                    Statistics: Num rows: 1 Data size: 7 Basic stats: COMPLETE 
Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 1 Data size: 7 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: 1 Data size: 7 Basic stats: 
COMPLETE Column stats: NONE
-        Reducer 2 
-            Reduce Operator Tree:
-              Group By Operator
-                aggregations: count(VALUE._col0)
-                mode: mergepartial
-                outputColumnNames: _col0
-                Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE 
Column stats: NONE
-                File Output Operator
-                  compressed: false
-                  Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE 
Column stats: NONE
-                  table:
-                      input format: 
org.apache.hadoop.mapred.SequenceFileInputFormat
-                      output format: 
org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
-                      serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
-
-  Stage: Stage-0
-    Fetch Operator
-      limit: -1
-      Processor Tree:
-        ListSink
-
-PREHOOK: query: select count(*) from 
-  (
-  select * from
-    (
-      select a.key as key, a.value as value from tbl1 a where key < 8
-    ) subq1 
-  where key < 6
-  ) subq2
-  join
-  (
-  select * from
-    (
-      select a.key as key, a.value as value from tbl1 a where key < 8
-    ) subq3 
-  where key < 6
-  ) subq4
-  on subq2.key = subq4.key
-PREHOOK: type: QUERY
-PREHOOK: Input: default@tbl1
-#### A masked pattern was here ####
-POSTHOOK: query: select count(*) from 
-  (
-  select * from
-    (
-      select a.key as key, a.value as value from tbl1 a where key < 8
-    ) subq1 
-  where key < 6
-  ) subq2
-  join
-  (
-  select * from
-    (
-      select a.key as key, a.value as value from tbl1 a where key < 8
-    ) subq3 
-  where key < 6
-  ) subq4
-  on subq2.key = subq4.key
-POSTHOOK: type: QUERY
-POSTHOOK: Input: default@tbl1
-#### A masked pattern was here ####
-20
-PREHOOK: query: -- The subquery itself is being joined. Since the sub-query 
only contains selects and filters and the join key
--- is not getting modified, it should be converted to a sort-merge join. Note 
that the sub-query modifies one 
--- item, but that is not part of the join key.
-explain
-select count(*) from 
-  (select a.key as key, concat(a.value, a.value) as value from tbl1 a where 
key < 8) subq1 
-    join
-  (select a.key as key, concat(a.value, a.value) as value from tbl2 a where 
key < 8) subq2
-  on subq1.key = subq2.key
-PREHOOK: type: QUERY
-POSTHOOK: query: -- The subquery itself is being joined. Since the sub-query 
only contains selects and filters and the join key
--- is not getting modified, it should be converted to a sort-merge join. Note 
that the sub-query modifies one 
--- item, but that is not part of the join key.
-explain
-select count(*) from 
-  (select a.key as key, concat(a.value, a.value) as value from tbl1 a where 
key < 8) subq1 
-    join
-  (select a.key as key, concat(a.value, a.value) as value from tbl2 a where 
key < 8) subq2
-  on subq1.key = subq2.key
-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:
-        Map 1 <- Map 3 (BROADCAST_EDGE)
-        Reducer 2 <- Map 1 (SIMPLE_EDGE)
-#### A masked pattern was here ####
-      Vertices:
-        Map 1 
-            Map Operator Tree:
-                TableScan
-                  alias: a
-                  Statistics: Num rows: 10 Data size: 70 Basic stats: COMPLETE 
Column stats: NONE
-                  Filter Operator
-                    predicate: (key < 8) (type: boolean)
-                    Statistics: Num rows: 3 Data size: 21 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 3 Data size: 21 Basic stats: 
COMPLETE Column stats: NONE
-                      Map Join Operator
-                        condition map:
-                             Inner Join 0 to 1
-                        keys:
-                          0 _col0 (type: int)
-                          1 _col0 (type: int)
-                        input vertices:
-                          1 Map 3
-                        Statistics: Num rows: 3 Data size: 23 Basic stats: 
COMPLETE Column stats: NONE
-                        HybridGraceHashJoin: true
-                        Group By Operator
-                          aggregations: count()
-                          mode: hash
-                          outputColumnNames: _col0
-                          Statistics: Num rows: 1 Data size: 8 Basic stats: 
COMPLETE Column stats: NONE
-                          Reduce Output Operator
-                            sort order: 
-                            Statistics: Num rows: 1 Data size: 8 Basic stats: 
COMPLETE Column stats: NONE
-                            value expressions: _col0 (type: bigint)
-        Map 3 
-            Map Operator Tree:
-                TableScan
-                  alias: a
-                  Statistics: Num rows: 10 Data size: 70 Basic stats: COMPLETE 
Column stats: NONE
-                  Filter Operator
-                    predicate: (key < 8) (type: boolean)
-                    Statistics: Num rows: 3 Data size: 21 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 3 Data size: 21 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: 3 Data size: 21 Basic stats: 
COMPLETE Column stats: NONE
-        Reducer 2 
-            Reduce Operator Tree:
-              Group By Operator
-                aggregations: count(VALUE._col0)
-                mode: mergepartial
-                outputColumnNames: _col0
-                Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE 
Column stats: NONE
-                File Output Operator
-                  compressed: false
-                  Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE 
Column stats: NONE
-                  table:
-                      input format: 
org.apache.hadoop.mapred.SequenceFileInputFormat
-                      output format: 
org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
-                      serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
-
-  Stage: Stage-0
-    Fetch Operator
-      limit: -1
-      Processor Tree:
-        ListSink
-
-PREHOOK: query: select count(*) from 
-  (select a.key as key, concat(a.value, a.value) as value from tbl1 a where 
key < 8) subq1 
-    join
-  (select a.key as key, concat(a.value, a.value) as value from tbl2 a where 
key < 8) subq2
-  on subq1.key = subq2.key
-PREHOOK: type: QUERY
-PREHOOK: Input: default@tbl1
-PREHOOK: Input: default@tbl2
-#### A masked pattern was here ####
-POSTHOOK: query: select count(*) from 
-  (select a.key as key, concat(a.value, a.value) as value from tbl1 a where 
key < 8) subq1 
-    join
-  (select a.key as key, concat(a.value, a.value) as value from tbl2 a where 
key < 8) subq2
-  on subq1.key = subq2.key
-POSTHOOK: type: QUERY
-POSTHOOK: Input: default@tbl1
-POSTHOOK: Input: default@tbl2
-#### A masked pattern was here ####
-20
-PREHOOK: query: -- Since the join key is modified by the sub-query, neither 
sort-merge join not bucketized mapside
--- join should be performed
-explain
-select count(*) from 
-  (select a.key +1 as key, concat(a.value, a.value) as value from tbl1 a) 
subq1 
-    join
-  (select a.key +1 as key, concat(a.value, a.value) as value from tbl2 a) subq2
-  on subq1.key = subq2.key
-PREHOOK: type: QUERY
-POSTHOOK: query: -- Since the join key is modified by the sub-query, neither 
sort-merge join not bucketized mapside
--- join should be performed
-explain
-select count(*) from 
-  (select a.key +1 as key, concat(a.value, a.value) as value from tbl1 a) 
subq1 
-    join
-  (select a.key +1 as key, concat(a.value, a.value) as value from tbl2 a) subq2
-  on subq1.key = subq2.key
-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:
-        Map 1 <- Map 3 (BROADCAST_EDGE)
-        Reducer 2 <- Map 1 (SIMPLE_EDGE)
-#### A masked pattern was here ####
-      Vertices:
-        Map 1 
-            Map Operator Tree:
-                TableScan
-                  alias: a
-                  Statistics: Num rows: 10 Data size: 70 Basic stats: COMPLETE 
Column stats: NONE
-                  Filter Operator
-                    predicate: (key + 1) is not null (type: boolean)
-                    Statistics: Num rows: 10 Data size: 70 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: (key + 1) (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 10 Data size: 70 Basic stats: 
COMPLETE Column stats: NONE
-                      Map Join Operator
-                        condition map:
-                             Inner Join 0 to 1
-                        keys:
-                          0 _col0 (type: int)
-                          1 _col0 (type: int)
-                        input vertices:
-                          1 Map 3
-                        Statistics: Num rows: 11 Data size: 77 Basic stats: 
COMPLETE Column stats: NONE
-                        HybridGraceHashJoin: true
-                        Group By Operator
-                          aggregations: count()
-                          mode: hash
-                          outputColumnNames: _col0
-                          Statistics: Num rows: 1 Data size: 8 Basic stats: 
COMPLETE Column stats: NONE
-                          Reduce Output Operator
-                            sort order: 
-                            Statistics: Num rows: 1 Data size: 8 Basic stats: 
COMPLETE Column stats: NONE
-                            value expressions: _col0 (type: bigint)
-        Map 3 
-            Map Operator Tree:
-                TableScan
-                  alias: a
-                  Statistics: Num rows: 10 Data size: 70 Basic stats: COMPLETE 
Column stats: NONE
-                  Filter Operator
-                    predicate: (key + 1) is not null (type: boolean)
-                    Statistics: Num rows: 10 Data size: 70 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: (key + 1) (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 10 Data size: 70 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: 10 Data size: 70 Basic stats: 
COMPLETE Column stats: NONE
-        Reducer 2 
-            Reduce Operator Tree:
-              Group By Operator
-                aggregations: count(VALUE._col0)
-                mode: mergepartial
-                outputColumnNames: _col0
-                Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE 
Column stats: NONE
-                File Output Operator
-                  compressed: false
-                  Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE 
Column stats: NONE
-                  table:
-                      input format: 
org.apache.hadoop.mapred.SequenceFileInputFormat
-                      output format: 
org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
-                      serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
-
-  Stage: Stage-0
-    Fetch Operator
-      limit: -1
-      Processor Tree:
-        ListSink
-
-PREHOOK: query: select count(*) from 
-  (select a.key +1 as key, concat(a.value, a.value) as value from tbl1 a) 
subq1 
-    join
-  (select a.key +1 as key, concat(a.value, a.value) as value from tbl2 a) subq2
-  on subq1.key = subq2.key
-PREHOOK: type: QUERY
-PREHOOK: Input: default@tbl1
-PREHOOK: Input: default@tbl2
-#### A masked pattern was here ####
-POSTHOOK: query: select count(*) from 
-  (select a.key +1 as key, concat(a.value, a.value) as value from tbl1 a) 
subq1 
-    join
-  (select a.key +1 as key, concat(a.value, a.value) as value from tbl2 a) subq2
-  on subq1.key = subq2.key
-POSTHOOK: type: QUERY
-POSTHOOK: Input: default@tbl1
-POSTHOOK: Input: default@tbl2
-#### A masked pattern was here ####
-22
-PREHOOK: query: -- The left table is a sub-query and the right table is not.
--- It should be converted to a sort-merge join.
-explain
-select count(*) from 
-  (select a.key as key, a.value as value from tbl1 a where key < 6) subq1 
-    join tbl2 a on subq1.key = a.key
-PREHOOK: type: QUERY
-POSTHOOK: query: -- The left table is a sub-query and the right table is not.
--- It should be converted to a sort-merge join.
-explain
-select count(*) from 
-  (select a.key as key, a.value as value from tbl1 a where key < 6) subq1 
-    join tbl2 a on subq1.key = a.key
-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:
-        Map 1 <- Map 3 (BROADCAST_EDGE)
-        Reducer 2 <- Map 1 (SIMPLE_EDGE)
-#### A masked pattern was here ####
-      Vertices:
-        Map 1 
-            Map Operator Tree:
-                TableScan
-                  alias: a
-                  Statistics: Num rows: 10 Data size: 70 Basic stats: COMPLETE 
Column stats: NONE
-                  Filter Operator
-                    predicate: (key < 6) (type: boolean)
-                    Statistics: Num rows: 3 Data size: 21 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 3 Data size: 21 Basic stats: 
COMPLETE Column stats: NONE
-                      Map Join Operator
-                        condition map:
-                             Inner Join 0 to 1
-                        keys:
-                          0 _col0 (type: int)
-                          1 _col0 (type: int)
-                        input vertices:
-                          1 Map 3
-                        Statistics: Num rows: 3 Data size: 23 Basic stats: 
COMPLETE Column stats: NONE
-                        HybridGraceHashJoin: true
-                        Group By Operator
-                          aggregations: count()
-                          mode: hash
-                          outputColumnNames: _col0
-                          Statistics: Num rows: 1 Data size: 8 Basic stats: 
COMPLETE Column stats: NONE
-                          Reduce Output Operator
-                            sort order: 
-                            Statistics: Num rows: 1 Data size: 8 Basic stats: 
COMPLETE Column stats: NONE
-                            value expressions: _col0 (type: bigint)
-        Map 3 
-            Map Operator Tree:
-                TableScan
-                  alias: a
-                  Statistics: Num rows: 10 Data size: 70 Basic stats: COMPLETE 
Column stats: NONE
-                  Filter Operator
-                    predicate: (key < 6) (type: boolean)
-                    Statistics: Num rows: 3 Data size: 21 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 3 Data size: 21 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: 3 Data size: 21 Basic stats: 
COMPLETE Column stats: NONE
-        Reducer 2 
-            Reduce Operator Tree:
-              Group By Operator
-                aggregations: count(VALUE._col0)
-                mode: mergepartial
-                outputColumnNames: _col0
-                Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE 
Column stats: NONE
-                File Output Operator
-                  compressed: false
-                  Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE 
Column stats: NONE
-                  table:
-                      input format: 
org.apache.hadoop.mapred.SequenceFileInputFormat
-                      output format: 
org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
-                      serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
-
-  Stage: Stage-0
-    Fetch Operator
-      limit: -1
-      Processor Tree:
-        ListSink
-
-PREHOOK: query: select count(*) from 
-  (select a.key as key, a.value as value from tbl1 a where key < 6) subq1 
-    join tbl2 a on subq1.key = a.key
-PREHOOK: type: QUERY
-PREHOOK: Input: default@tbl1
-PREHOOK: Input: default@tbl2
-#### A masked pattern was here ####
-POSTHOOK: query: select count(*) from 
-  (select a.key as key, a.value as value from tbl1 a where key < 6) subq1 
-    join tbl2 a on subq1.key = a.key
-POSTHOOK: type: QUERY
-POSTHOOK: Input: default@tbl1
-POSTHOOK: Input: default@tbl2
-#### A masked pattern was here ####
-20
-PREHOOK: query: -- The right table is a sub-query and the left table is not.
--- It should be converted to a sort-merge join.
-explain
-select count(*) from tbl1 a
-  join
-  (select a.key as key, a.value as value from tbl2 a where key < 6) subq1 
-  on a.key = subq1.key
-PREHOOK: type: QUERY
-POSTHOOK: query: -- The right table is a sub-query and the left table is not.
--- It should be converted to a sort-merge join.
-explain
-select count(*) from tbl1 a
-  join
-  (select a.key as key, a.value as value from tbl2 a where key < 6) subq1 
-  on a.key = subq1.key
-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:
-        Map 1 <- Map 3 (BROADCAST_EDGE)
-        Reducer 2 <- Map 1 (SIMPLE_EDGE)
-#### A masked pattern was here ####
-      Vertices:
-        Map 1 
-            Map Operator Tree:
-                TableScan
-                  alias: a
-                  Statistics: Num rows: 10 Data size: 70 Basic stats: COMPLETE 
Column stats: NONE
-                  Filter Operator
-                    predicate: (key < 6) (type: boolean)
-                    Statistics: Num rows: 3 Data size: 21 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 3 Data size: 21 Basic stats: 
COMPLETE Column stats: NONE
-                      Map Join Operator
-                        condition map:
-                             Inner Join 0 to 1
-                        keys:
-                          0 _col0 (type: int)
-                          1 _col0 (type: int)
-                        input vertices:
-                          1 Map 3
-                        Statistics: Num rows: 3 Data size: 23 Basic stats: 
COMPLETE Column stats: NONE
-                        HybridGraceHashJoin: true
-                        Group By Operator
-                          aggregations: count()
-                          mode: hash
-                          outputColumnNames: _col0
-                          Statistics: Num rows: 1 Data size: 8 Basic stats: 
COMPLETE Column stats: NONE
-                          Reduce Output Operator
-                            sort order: 
-                            Statistics: Num rows: 1 Data size: 8 Basic stats: 
COMPLETE Column stats: NONE
-                            value expressions: _col0 (type: bigint)
-        Map 3 
-            Map Operator Tree:
-                TableScan
-                  alias: a
-                  Statistics: Num rows: 10 Data size: 70 Basic stats: COMPLETE 
Column stats: NONE
-                  Filter Operator
-                    predicate: (key < 6) (type: boolean)
-                    Statistics: Num rows: 3 Data size: 21 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 3 Data size: 21 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: 3 Data size: 21 Basic stats: 
COMPLETE Column stats: NONE
-        Reducer 2 
-            Reduce Operator Tree:
-              Group By Operator
-                aggregations: count(VALUE._col0)
-                mode: mergepartial
-                outputColumnNames: _col0
-                Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE 
Column stats: NONE
-                File Output Operator
-                  compressed: false
-                  Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE 
Column stats: NONE
-                  table:
-                      input format: 
org.apache.hadoop.mapred.SequenceFileInputFormat
-                      output format: 
org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
-                      serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
-
-  Stage: Stage-0
-    Fetch Operator
-      limit: -1
-      Processor Tree:
-        ListSink
-
-PREHOOK: query: select count(*) from tbl1 a
-  join
-  (select a.key as key, a.value as value from tbl2 a where key < 6) subq1 
-  on a.key = subq1.key
-PREHOOK: type: QUERY
-PREHOOK: Input: default@tbl1
-PREHOOK: Input: default@tbl2
-#### A masked pattern was here ####
-POSTHOOK: query: select count(*) from tbl1 a
-  join
-  (select a.key as key, a.value as value from tbl2 a where key < 6) subq1 
-  on a.key = subq1.key
-POSTHOOK: type: QUERY
-POSTHOOK: Input: default@tbl1
-POSTHOOK: Input: default@tbl2
-#### A masked pattern was here ####
-20
-PREHOOK: query: -- There are more than 2 inputs to the join, all of them being 
sub-queries. 
--- It should be converted to to a sort-merge join
-explain
-select count(*) from 
-  (select a.key as key, a.value as value from tbl1 a where key < 6) subq1 
-    join
-  (select a.key as key, a.value as value from tbl2 a where key < 6) subq2
-  on (subq1.key = subq2.key)
-    join
-  (select a.key as key, a.value as value from tbl2 a where key < 6) subq3
-  on (subq1.key = subq3.key)
-PREHOOK: type: QUERY
-POSTHOOK: query: -- There are more than 2 inputs to the join, all of them 
being sub-queries. 
--- It should be converted to to a sort-merge join
-explain
-select count(*) from 
-  (select a.key as key, a.value as value from tbl1 a where key < 6) subq1 
-    join
-  (select a.key as key, a.value as value from tbl2 a where key < 6) subq2
-  on (subq1.key = subq2.key)
-    join
-  (select a.key as key, a.value as value from tbl2 a where key < 6) subq3
-  on (subq1.key = subq3.key)
-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:
-        Map 1 <- Map 3 (BROADCAST_EDGE), Map 4 (BROADCAST_EDGE)
-        Reducer 2 <- Map 1 (SIMPLE_EDGE)
-#### A masked pattern was here ####
-      Vertices:
-        Map 1 
-            Map Operator Tree:
-                TableScan
-                  alias: a
-                  Statistics: Num rows: 10 Data size: 70 Basic stats: COMPLETE 
Column stats: NONE
-                  Filter Operator
-                    predicate: (key < 6) (type: boolean)
-                    Statistics: Num rows: 3 Data size: 21 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 3 Data size: 21 Basic stats: 
COMPLETE Column stats: NONE
-                      Map Join Operator
-                        condition map:
-                             Inner Join 0 to 1
-                             Inner Join 0 to 2
-                        keys:
-                          0 _col0 (type: int)
-                          1 _col0 (type: int)
-                          2 _col0 (type: int)
-                        input vertices:
-                          1 Map 3
-                          2 Map 4
-                        Statistics: Num rows: 6 Data size: 46 Basic stats: 
COMPLETE Column stats: NONE
-                        HybridGraceHashJoin: true
-                        Group By Operator
-                          aggregations: count()
-                          mode: hash
-                          outputColumnNames: _col0
-                          Statistics: Num rows: 1 Data size: 8 Basic stats: 
COMPLETE Column stats: NONE
-                          Reduce Output Operator
-                            sort order: 
-                            Statistics: Num rows: 1 Data size: 8 Basic stats: 
COMPLETE Column stats: NONE
-                            value expressions: _col0 (type: bigint)
-        Map 3 
-            Map Operator Tree:
-                TableScan
-                  alias: a
-                  Statistics: Num rows: 10 Data size: 70 Basic stats: COMPLETE 
Column stats: NONE
-                  Filter Operator
-                    predicate: (key < 6) (type: boolean)
-                    Statistics: Num rows: 3 Data size: 21 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 3 Data size: 21 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: 3 Data size: 21 Basic stats: 
COMPLETE Column stats: NONE
-        Map 4 
-            Map Operator Tree:
-                TableScan
-                  alias: a
-                  Statistics: Num rows: 10 Data size: 70 Basic stats: COMPLETE 
Column stats: NONE
-                  Filter Operator
-                    predicate: (key < 6) (type: boolean)
-                    Statistics: Num rows: 3 Data size: 21 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 3 Data size: 21 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: 3 Data size: 21 Basic stats: 
COMPLETE Column stats: NONE
-        Reducer 2 
-            Reduce Operator Tree:
-              Group By Operator
-                aggregations: count(VALUE._col0)
-                mode: mergepartial
-                outputColumnNames: _col0
-                Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE 
Column stats: NONE
-                File Output Operator
-                  compressed: false
-                  Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE 
Column stats: NONE
-                  table:
-                      input format: 
org.apache.hadoop.mapred.SequenceFileInputFormat
-                      output format: 
org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
-                      serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
-
-  Stage: Stage-0
-    Fetch Operator
-      limit: -1
-      Processor Tree:
-        ListSink
-
-PREHOOK: query: select count(*) from 
-  (select a.key as key, a.value as value from tbl1 a where key < 6) subq1 
-    join
-  (select a.key as key, a.value as value from tbl2 a where key < 6) subq2
-  on subq1.key = subq2.key
-    join
-  (select a.key as key, a.value as value from tbl2 a where key < 6) subq3
-  on (subq1.key = subq3.key)
-PREHOOK: type: QUERY
-PREHOOK: Input: default@tbl1
-PREHOOK: Input: default@tbl2
-#### A masked pattern was here ####
-POSTHOOK: query: select count(*) from 
-  (select a.key as key, a.value as value from tbl1 a where key < 6) subq1 
-    join
-  (select a.key as key, a.value as value from tbl2 a where key < 6) subq2
-  on subq1.key = subq2.key
-    join
-  (select a.key as key, a.value as value from tbl2 a where key < 6) subq3
-  on (subq1.key = subq3.key)
-POSTHOOK: type: QUERY
-POSTHOOK: Input: default@tbl1
-POSTHOOK: Input: default@tbl2
-#### A masked pattern was here ####
-56
-PREHOOK: query: -- The join is being performed on a nested sub-query, and an 
aggregation is performed after that.
--- The join should be converted to a sort-merge join
-explain
-select count(*) from (
-  select subq2.key as key, subq2.value as value1, b.value as value2 from
-  (
-    select * from
-    (
-      select a.key as key, a.value as value from tbl1 a where key < 8
-    ) subq1
-    where key < 6
-  ) subq2
-join tbl2 b
-on subq2.key = b.key) a
-PREHOOK: type: QUERY
-POSTHOOK: query: -- The join is being performed on a nested sub-query, and an 
aggregation is performed after that.
--- The join should be converted to a sort-merge join
-explain
-select count(*) from (
-  select subq2.key as key, subq2.value as value1, b.value as value2 from
-  (
-    select * from
-    (
-      select a.key as key, a.value as value from tbl1 a where key < 8
-    ) subq1
-    where key < 6
-  ) subq2
-join tbl2 b
-on subq2.key = b.key) 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:
-        Map 1 <- Map 3 (BROADCAST_EDGE)
-        Reducer 2 <- Map 1 (SIMPLE_EDGE)
-#### A masked pattern was here ####
-      Vertices:
-        Map 1 
-            Map Operator Tree:
-                TableScan
-                  alias: a
-                  Statistics: Num rows: 10 Data size: 70 Basic stats: COMPLETE 
Column stats: NONE
-                  Filter Operator
-                    predicate: ((key < 8) and (key < 6)) (type: boolean)
-                    Statistics: Num rows: 1 Data size: 7 Basic stats: COMPLETE 
Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 1 Data size: 7 Basic stats: 
COMPLETE Column stats: NONE
-                      Map Join Operator
-                        condition map:
-                             Inner Join 0 to 1
-                        keys:
-                          0 _col0 (type: int)
-                          1 _col0 (type: int)
-                        input vertices:
-                          1 Map 3
-                        Statistics: Num rows: 1 Data size: 7 Basic stats: 
COMPLETE Column stats: NONE
-                        HybridGraceHashJoin: true
-                        Group By Operator
-                          aggregations: count()
-                          mode: hash
-                          outputColumnNames: _col0
-                          Statistics: Num rows: 1 Data size: 8 Basic stats: 
COMPLETE Column stats: NONE
-                          Reduce Output Operator
-                            sort order: 
-                            Statistics: Num rows: 1 Data size: 8 Basic stats: 
COMPLETE Column stats: NONE
-                            value expressions: _col0 (type: bigint)
-        Map 3 
-            Map Operator Tree:
-                TableScan
-                  alias: b
-                  Statistics: Num rows: 10 Data size: 70 Basic stats: COMPLETE 
Column stats: NONE
-                  Filter Operator
-                    predicate: ((key < 8) and (key < 6)) (type: boolean)
-                    Statistics: Num rows: 1 Data size: 7 Basic stats: COMPLETE 
Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 1 Data size: 7 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: 1 Data size: 7 Basic stats: 
COMPLETE Column stats: NONE
-        Reducer 2 
-            Reduce Operator Tree:
-              Group By Operator
-                aggregations: count(VALUE._col0)
-                mode: mergepartial
-                outputColumnNames: _col0
-                Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE 
Column stats: NONE
-                File Output Operator
-                  compressed: false
-                  Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE 
Column stats: NONE
-                  table:
-                      input format: 
org.apache.hadoop.mapred.SequenceFileInputFormat
-                      output format: 
org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
-                      serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
-
-  Stage: Stage-0
-    Fetch Operator
-      limit: -1
-      Processor Tree:
-        ListSink
-
-PREHOOK: query: select count(*) from (
-  select subq2.key as key, subq2.value as value1, b.value as value2 from
-  (
-    select * from
-    (
-      select a.key as key, a.value as value from tbl1 a where key < 8
-    ) subq1
-    where key < 6
-  ) subq2
-join tbl2 b
-on subq2.key = b.key) a
-PREHOOK: type: QUERY
-PREHOOK: Input: default@tbl1
-PREHOOK: Input: default@tbl2
-#### A masked pattern was here ####
-POSTHOOK: query: select count(*) from (
-  select subq2.key as key, subq2.value as value1, b.value as value2 from
-  (
-    select * from
-    (
-      select a.key as key, a.value as value from tbl1 a where key < 8
-    ) subq1
-    where key < 6
-  ) subq2
-join tbl2 b
-on subq2.key = b.key) a
-POSTHOOK: type: QUERY
-POSTHOOK: Input: default@tbl1
-POSTHOOK: Input: default@tbl2
-#### A masked pattern was here ####
-20
-PREHOOK: query: -- The join is being performed as part of sub-query. It should 
be converted to a sort-merge join
-explain
-select count(*) from (
-  select a.key as key, a.value as val1, b.value as val2 from tbl1 a join tbl2 
b on a.key = b.key
-) subq1
-PREHOOK: type: QUERY
-POSTHOOK: query: -- The join is being performed as part of sub-query. It 
should be converted to a sort-merge join
-explain
-select count(*) from (
-  select a.key as key, a.value as val1, b.value as val2 from tbl1 a join tbl2 
b on a.key = b.key
-) subq1
-POSTHOOK: type: QUERY
-STAGE DEPENDENCIES:
-  Stage-1 is a root stage
-  Stage-0 depends on stages: Stage-1
-
-STAGE PLANS:
-  Stage: Stage-1
-    Tez
-#### A masked pattern was here ####
-      Edges:
-        Map 1 <- Map 3 (BROADCAST_EDGE)
-        Reducer 2 <- Map 1 (SIMPLE_EDGE)
-#### A masked pattern was here ####
-      Vertices:
-        Map 1 
-            Map Operator Tree:
-                TableScan
-                  alias: a
-                  Statistics: Num rows: 10 Data size: 70 Basic stats: COMPLETE 
Column stats: NONE
-                  Filter Operator
-                    predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 10 Data size: 70 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 10 Data size: 70 Basic stats: 
COMPLETE Column stats: NONE
-                      Map Join Operator
-                        condition map:
-                             Inner Join 0 to 1
-                        keys:
-                          0 _col0 (type: int)
-                          1 _col0 (type: int)
-                        input vertices:
-                          1 Map 3
-                        Statistics: Num rows: 11 Data size: 77 Basic stats: 
COMPLETE Column stats: NONE
-                        HybridGraceHashJoin: true
-                        Group By Operator
-                          aggregations: count()
-                          mode: hash
-                          outputColumnNames: _col0
-                          Statistics: Num rows: 1 Data size: 8 Basic stats: 
COMPLETE Column stats: NONE
-                          Reduce Output Operator
-                            sort order: 
-                            Statistics: Num rows: 1 Data size: 8 Basic stats: 
COMPLETE Column stats: NONE
-                            value expressions: _col0 (type: bigint)
-        Map 3 
-            Map Operator Tree:
-                TableScan
-                  alias: b
-                  Statistics: Num rows: 10 Data size: 70 Basic stats: COMPLETE 
Column stats: NONE
-                  Filter Operator
-                    predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 10 Data size: 70 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 10 Data size: 70 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: 10 Data size: 70 Basic stats: 
COMPLETE Column stats: NONE
-        Reducer 2 
-            Reduce Operator Tree:
-              Group By Operator
-                aggregations: count(VALUE._col0)
-                mode: mergepartial
-                outputColumnNames: _col0
-                Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE 
Column stats: NONE
-                File Output Operator
-                  compressed: false
-                  Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE 
Column stats: NONE
-                  table:
-                      input format: 
org.apache.hadoop.mapred.SequenceFileInputFormat
-                      output format: 
org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
-                      serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
-
-  Stage: Stage-0
-    Fetch Operator
-      limit: -1
-      Processor Tree:
-        ListSink
-
-PREHOOK: query: select count(*) from (
-  select a.key as key, a.value as val1, b.value as val2 from tbl1 a join tbl2 
b on a.key = b.key
-) subq1
-PREHOOK: type: QUERY
-PREHOOK: Input: default@tbl1
-PREHOOK: Input: default@tbl2
-#### A masked pattern was here ####
-POSTHOOK: query: select count(*) from (
-  select a.key as key, a.value as val1, b.value as val2 from tbl1 a join tbl2 
b on a.key = b.key
-) subq1
-POSTHOOK: type: QUERY
-POSTHOOK: Input: default@tbl1
-POSTHOOK: Input: default@tbl2
-#### A masked pattern was here ####
-22
-PREHOOK: query: -- The join is being performed as part of sub-query. It should 
be converted to a sort-merge join
-explain
-select key, count(*) from 
-(
-  select a.key as key, a.value as val1, b.value as val2 from tbl1 a join tbl2 
b on a.key = b.key
-) subq1
-group by key
-PREHOOK: type: QUERY
-POSTHOOK: query: -- The join is being performed as part of sub-query. It 
should be converted to a sort-merge join
-explain
-select key, count(*) from 
-(
-  select a.key as key, a.value as val1, b.value as val2 from tbl1 a join tbl2 
b on a.key = b.key
-) subq1
-group by key
-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:
-        Map 1 <- Map 3 (BROADCAST_EDGE)
-        Reducer 2 <- Map 1 (SIMPLE_EDGE)
-#### A masked pattern was here ####
-      Vertices:
-        Map 1 
-            Map Operator Tree:
-                TableScan
-                  alias: a
-                  Statistics: Num rows: 10 Data size: 70 Basic stats: COMPLETE 
Column stats: NONE
-                  Filter Operator
-                    predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 10 Data size: 70 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 10 Data size: 70 Basic stats: 
COMPLETE Column stats: NONE
-                      Map Join Operator
-                        condition map:
-                             Inner Join 0 to 1
-                        keys:
-                          0 _col0 (type: int)
-                          1 _col0 (type: int)
-                        outputColumnNames: _col0
-                        input vertices:
-                          1 Map 3
-                        Statistics: Num rows: 11 Data size: 77 Basic stats: 
COMPLETE Column stats: NONE
-                        HybridGraceHashJoin: true
-                        Group By Operator
-                          aggregations: count()
-                          keys: _col0 (type: int)
-                          mode: hash
-                          outputColumnNames: _col0, _col1
-                          Statistics: Num rows: 11 Data size: 77 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: 11 Data size: 77 Basic 
stats: COMPLETE Column stats: NONE
-                            value expressions: _col1 (type: bigint)
-        Map 3 
-            Map Operator Tree:
-                TableScan
-                  alias: b
-                  Statistics: Num rows: 10 Data size: 70 Basic stats: COMPLETE 
Column stats: NONE
-                  Filter Operator
-                    predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 10 Data size: 70 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 10 Data size: 70 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: 10 Data size: 70 Basic stats: 
COMPLETE Column stats: NONE
-        Reducer 2 
-            Reduce Operator Tree:
-              Group By Operator
-                aggregations: count(VALUE._col0)
-                keys: KEY._col0 (type: int)
-                mode: mergepartial
-                outputColumnNames: _col0, _col1
-                Statistics: Num rows: 5 Data size: 35 Basic stats: COMPLETE 
Column stats: NONE
-                File Output Operator
-                  compr

<TRUNCATED>

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