http://git-wip-us.apache.org/repos/asf/hive/blob/975a49b6/ql/src/test/results/clientpositive/tez/bucket_map_join_tez2.q.out
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diff --git a/ql/src/test/results/clientpositive/tez/bucket_map_join_tez2.q.out 
b/ql/src/test/results/clientpositive/tez/bucket_map_join_tez2.q.out
deleted file mode 100644
index b5ba6cf..0000000
--- a/ql/src/test/results/clientpositive/tez/bucket_map_join_tez2.q.out
+++ /dev/null
@@ -1,701 +0,0 @@
-PREHOOK: query: CREATE TABLE srcbucket_mapjoin(key int, value string) 
partitioned by (ds string) CLUSTERED BY (key) INTO 2 BUCKETS STORED AS TEXTFILE
-PREHOOK: type: CREATETABLE
-PREHOOK: Output: database:default
-PREHOOK: Output: default@srcbucket_mapjoin
-POSTHOOK: query: CREATE TABLE srcbucket_mapjoin(key int, value string) 
partitioned by (ds string) CLUSTERED BY (key) INTO 2 BUCKETS STORED AS TEXTFILE
-POSTHOOK: type: CREATETABLE
-POSTHOOK: Output: database:default
-POSTHOOK: Output: default@srcbucket_mapjoin
-PREHOOK: query: CREATE TABLE tab_part (key int, value string) PARTITIONED 
BY(ds STRING) CLUSTERED BY (key) INTO 4 BUCKETS STORED AS TEXTFILE
-PREHOOK: type: CREATETABLE
-PREHOOK: Output: database:default
-PREHOOK: Output: default@tab_part
-POSTHOOK: query: CREATE TABLE tab_part (key int, value string) PARTITIONED 
BY(ds STRING) CLUSTERED BY (key) INTO 4 BUCKETS STORED AS TEXTFILE
-POSTHOOK: type: CREATETABLE
-POSTHOOK: Output: database:default
-POSTHOOK: Output: default@tab_part
-PREHOOK: query: CREATE TABLE srcbucket_mapjoin_part (key int, value string) 
partitioned by (ds string) CLUSTERED BY (key) INTO 4 BUCKETS STORED AS TEXTFILE
-PREHOOK: type: CREATETABLE
-PREHOOK: Output: database:default
-PREHOOK: Output: default@srcbucket_mapjoin_part
-POSTHOOK: query: CREATE TABLE srcbucket_mapjoin_part (key int, value string) 
partitioned by (ds string) CLUSTERED BY (key) INTO 4 BUCKETS STORED AS TEXTFILE
-POSTHOOK: type: CREATETABLE
-POSTHOOK: Output: database:default
-POSTHOOK: Output: default@srcbucket_mapjoin_part
-PREHOOK: query: load data local inpath '../../data/files/srcbucket20.txt' INTO 
TABLE srcbucket_mapjoin partition(ds='2008-04-08')
-PREHOOK: type: LOAD
-#### A masked pattern was here ####
-PREHOOK: Output: default@srcbucket_mapjoin
-POSTHOOK: query: load data local inpath '../../data/files/srcbucket20.txt' 
INTO TABLE srcbucket_mapjoin partition(ds='2008-04-08')
-POSTHOOK: type: LOAD
-#### A masked pattern was here ####
-POSTHOOK: Output: default@srcbucket_mapjoin
-POSTHOOK: Output: default@srcbucket_mapjoin@ds=2008-04-08
-PREHOOK: query: load data local inpath '../../data/files/srcbucket22.txt' INTO 
TABLE srcbucket_mapjoin partition(ds='2008-04-08')
-PREHOOK: type: LOAD
-#### A masked pattern was here ####
-PREHOOK: Output: default@srcbucket_mapjoin@ds=2008-04-08
-POSTHOOK: query: load data local inpath '../../data/files/srcbucket22.txt' 
INTO TABLE srcbucket_mapjoin partition(ds='2008-04-08')
-POSTHOOK: type: LOAD
-#### A masked pattern was here ####
-POSTHOOK: Output: default@srcbucket_mapjoin@ds=2008-04-08
-PREHOOK: query: load data local inpath '../../data/files/srcbucket20.txt' INTO 
TABLE srcbucket_mapjoin_part partition(ds='2008-04-08')
-PREHOOK: type: LOAD
-#### A masked pattern was here ####
-PREHOOK: Output: default@srcbucket_mapjoin_part
-POSTHOOK: query: load data local inpath '../../data/files/srcbucket20.txt' 
INTO TABLE srcbucket_mapjoin_part partition(ds='2008-04-08')
-POSTHOOK: type: LOAD
-#### A masked pattern was here ####
-POSTHOOK: Output: default@srcbucket_mapjoin_part
-POSTHOOK: Output: default@srcbucket_mapjoin_part@ds=2008-04-08
-PREHOOK: query: load data local inpath '../../data/files/srcbucket21.txt' INTO 
TABLE srcbucket_mapjoin_part partition(ds='2008-04-08')
-PREHOOK: type: LOAD
-#### A masked pattern was here ####
-PREHOOK: Output: default@srcbucket_mapjoin_part@ds=2008-04-08
-POSTHOOK: query: load data local inpath '../../data/files/srcbucket21.txt' 
INTO TABLE srcbucket_mapjoin_part partition(ds='2008-04-08')
-POSTHOOK: type: LOAD
-#### A masked pattern was here ####
-POSTHOOK: Output: default@srcbucket_mapjoin_part@ds=2008-04-08
-PREHOOK: query: load data local inpath '../../data/files/srcbucket22.txt' INTO 
TABLE srcbucket_mapjoin_part partition(ds='2008-04-08')
-PREHOOK: type: LOAD
-#### A masked pattern was here ####
-PREHOOK: Output: default@srcbucket_mapjoin_part@ds=2008-04-08
-POSTHOOK: query: load data local inpath '../../data/files/srcbucket22.txt' 
INTO TABLE srcbucket_mapjoin_part partition(ds='2008-04-08')
-POSTHOOK: type: LOAD
-#### A masked pattern was here ####
-POSTHOOK: Output: default@srcbucket_mapjoin_part@ds=2008-04-08
-PREHOOK: query: load data local inpath '../../data/files/srcbucket23.txt' INTO 
TABLE srcbucket_mapjoin_part partition(ds='2008-04-08')
-PREHOOK: type: LOAD
-#### A masked pattern was here ####
-PREHOOK: Output: default@srcbucket_mapjoin_part@ds=2008-04-08
-POSTHOOK: query: load data local inpath '../../data/files/srcbucket23.txt' 
INTO TABLE srcbucket_mapjoin_part partition(ds='2008-04-08')
-POSTHOOK: type: LOAD
-#### A masked pattern was here ####
-POSTHOOK: Output: default@srcbucket_mapjoin_part@ds=2008-04-08
-PREHOOK: query: insert overwrite table tab_part partition (ds='2008-04-08')
-select key,value from srcbucket_mapjoin_part
-PREHOOK: type: QUERY
-PREHOOK: Input: default@srcbucket_mapjoin_part
-PREHOOK: Input: default@srcbucket_mapjoin_part@ds=2008-04-08
-PREHOOK: Output: default@tab_part@ds=2008-04-08
-POSTHOOK: query: insert overwrite table tab_part partition (ds='2008-04-08')
-select key,value from srcbucket_mapjoin_part
-POSTHOOK: type: QUERY
-POSTHOOK: Input: default@srcbucket_mapjoin_part
-POSTHOOK: Input: default@srcbucket_mapjoin_part@ds=2008-04-08
-POSTHOOK: Output: default@tab_part@ds=2008-04-08
-POSTHOOK: Lineage: tab_part PARTITION(ds=2008-04-08).key SIMPLE 
[(srcbucket_mapjoin_part)srcbucket_mapjoin_part.FieldSchema(name:key, type:int, 
comment:null), ]
-POSTHOOK: Lineage: tab_part PARTITION(ds=2008-04-08).value SIMPLE 
[(srcbucket_mapjoin_part)srcbucket_mapjoin_part.FieldSchema(name:value, 
type:string, comment:null), ]
-PREHOOK: query: CREATE TABLE tab(key int, value string) PARTITIONED BY(ds 
STRING) CLUSTERED BY (key) INTO 2 BUCKETS STORED AS TEXTFILE
-PREHOOK: type: CREATETABLE
-PREHOOK: Output: database:default
-PREHOOK: Output: default@tab
-POSTHOOK: query: CREATE TABLE tab(key int, value string) PARTITIONED BY(ds 
STRING) CLUSTERED BY (key) INTO 2 BUCKETS STORED AS TEXTFILE
-POSTHOOK: type: CREATETABLE
-POSTHOOK: Output: database:default
-POSTHOOK: Output: default@tab
-PREHOOK: query: insert overwrite table tab partition (ds='2008-04-08')
-select key,value from srcbucket_mapjoin
-PREHOOK: type: QUERY
-PREHOOK: Input: default@srcbucket_mapjoin
-PREHOOK: Input: default@srcbucket_mapjoin@ds=2008-04-08
-PREHOOK: Output: default@tab@ds=2008-04-08
-POSTHOOK: query: insert overwrite table tab partition (ds='2008-04-08')
-select key,value from srcbucket_mapjoin
-POSTHOOK: type: QUERY
-POSTHOOK: Input: default@srcbucket_mapjoin
-POSTHOOK: Input: default@srcbucket_mapjoin@ds=2008-04-08
-POSTHOOK: Output: default@tab@ds=2008-04-08
-POSTHOOK: Lineage: tab PARTITION(ds=2008-04-08).key SIMPLE 
[(srcbucket_mapjoin)srcbucket_mapjoin.FieldSchema(name:key, type:int, 
comment:null), ]
-POSTHOOK: Lineage: tab PARTITION(ds=2008-04-08).value SIMPLE 
[(srcbucket_mapjoin)srcbucket_mapjoin.FieldSchema(name:value, type:string, 
comment:null), ]
-PREHOOK: query: explain select a.key, b.key from tab_part a join tab_part c on 
a.key = c.key join tab_part b on a.value = b.value
-PREHOOK: type: QUERY
-POSTHOOK: query: explain select a.key, b.key from tab_part a join tab_part c 
on a.key = c.key join tab_part b on a.value = b.value
-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 2 (CUSTOM_EDGE), Map 3 (BROADCAST_EDGE)
-#### A masked pattern was here ####
-      Vertices:
-        Map 1 
-            Map Operator Tree:
-                TableScan
-                  alias: a
-                  Statistics: Num rows: 500 Data size: 9312 Basic stats: 
COMPLETE Column stats: NONE
-                  Filter Operator
-                    predicate: (key is not null and value is not null) (type: 
boolean)
-                    Statistics: Num rows: 500 Data size: 9312 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int), value (type: string)
-                      outputColumnNames: _col0, _col1
-                      Statistics: Num rows: 500 Data size: 9312 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
-                        input vertices:
-                          1 Map 2
-                        Statistics: Num rows: 550 Data size: 10243 Basic 
stats: COMPLETE Column stats: NONE
-                        HybridGraceHashJoin: true
-                        Map Join Operator
-                          condition map:
-                               Inner Join 0 to 1
-                          keys:
-                            0 _col1 (type: string)
-                            1 _col1 (type: string)
-                          outputColumnNames: _col0, _col3
-                          input vertices:
-                            1 Map 3
-                          Statistics: Num rows: 605 Data size: 11267 Basic 
stats: COMPLETE Column stats: NONE
-                          HybridGraceHashJoin: true
-                          Select Operator
-                            expressions: _col0 (type: int), _col3 (type: int)
-                            outputColumnNames: _col0, _col1
-                            Statistics: Num rows: 605 Data size: 11267 Basic 
stats: COMPLETE Column stats: NONE
-                            File Output Operator
-                              compressed: false
-                              Statistics: Num rows: 605 Data size: 11267 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
-        Map 2 
-            Map Operator Tree:
-                TableScan
-                  alias: c
-                  Statistics: Num rows: 500 Data size: 9312 Basic stats: 
COMPLETE Column stats: NONE
-                  Filter Operator
-                    predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 500 Data size: 9312 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 500 Data size: 9312 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: 500 Data size: 9312 Basic stats: 
COMPLETE Column stats: NONE
-        Map 3 
-            Map Operator Tree:
-                TableScan
-                  alias: b
-                  Statistics: Num rows: 500 Data size: 9312 Basic stats: 
COMPLETE Column stats: NONE
-                  Filter Operator
-                    predicate: value is not null (type: boolean)
-                    Statistics: Num rows: 500 Data size: 9312 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int), value (type: string)
-                      outputColumnNames: _col0, _col1
-                      Statistics: Num rows: 500 Data size: 9312 Basic stats: 
COMPLETE Column stats: NONE
-                      Reduce Output Operator
-                        key expressions: _col1 (type: string)
-                        sort order: +
-                        Map-reduce partition columns: _col1 (type: string)
-                        Statistics: Num rows: 500 Data size: 9312 Basic stats: 
COMPLETE Column stats: NONE
-                        value expressions: _col0 (type: int)
-
-  Stage: Stage-0
-    Fetch Operator
-      limit: -1
-      Processor Tree:
-        ListSink
-
-PREHOOK: query: CREATE TABLE tab1(key int, value string) CLUSTERED BY (key) 
INTO 2 BUCKETS STORED AS TEXTFILE
-PREHOOK: type: CREATETABLE
-PREHOOK: Output: database:default
-PREHOOK: Output: default@tab1
-POSTHOOK: query: CREATE TABLE tab1(key int, value string) CLUSTERED BY (key) 
INTO 2 BUCKETS STORED AS TEXTFILE
-POSTHOOK: type: CREATETABLE
-POSTHOOK: Output: database:default
-POSTHOOK: Output: default@tab1
-PREHOOK: query: insert overwrite table tab1
-select key,value from srcbucket_mapjoin
-PREHOOK: type: QUERY
-PREHOOK: Input: default@srcbucket_mapjoin
-PREHOOK: Input: default@srcbucket_mapjoin@ds=2008-04-08
-PREHOOK: Output: default@tab1
-POSTHOOK: query: insert overwrite table tab1
-select key,value from srcbucket_mapjoin
-POSTHOOK: type: QUERY
-POSTHOOK: Input: default@srcbucket_mapjoin
-POSTHOOK: Input: default@srcbucket_mapjoin@ds=2008-04-08
-POSTHOOK: Output: default@tab1
-POSTHOOK: Lineage: tab1.key SIMPLE 
[(srcbucket_mapjoin)srcbucket_mapjoin.FieldSchema(name:key, type:int, 
comment:null), ]
-POSTHOOK: Lineage: tab1.value SIMPLE 
[(srcbucket_mapjoin)srcbucket_mapjoin.FieldSchema(name:value, type:string, 
comment:null), ]
-PREHOOK: query: explain
-select a.key, a.value, b.value
-from tab1 a join src b on a.key = b.key
-PREHOOK: type: QUERY
-POSTHOOK: query: explain
-select a.key, a.value, b.value
-from tab1 a join src b on a.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 2 <- Map 1 (BROADCAST_EDGE)
-#### A masked pattern was here ####
-      Vertices:
-        Map 1 
-            Map Operator Tree:
-                TableScan
-                  alias: a
-                  Statistics: Num rows: 242 Data size: 2566 Basic stats: 
COMPLETE Column stats: NONE
-                  Filter Operator
-                    predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 242 Data size: 2566 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int), value (type: string)
-                      outputColumnNames: _col0, _col1
-                      Statistics: Num rows: 242 Data size: 2566 Basic stats: 
COMPLETE Column stats: NONE
-                      Reduce Output Operator
-                        key expressions: UDFToDouble(_col0) (type: double)
-                        sort order: +
-                        Map-reduce partition columns: UDFToDouble(_col0) 
(type: double)
-                        Statistics: Num rows: 242 Data size: 2566 Basic stats: 
COMPLETE Column stats: NONE
-                        value expressions: _col0 (type: int), _col1 (type: 
string)
-        Map 2 
-            Map Operator Tree:
-                TableScan
-                  alias: b
-                  Statistics: Num rows: 500 Data size: 89000 Basic stats: 
COMPLETE Column stats: COMPLETE
-                  Filter Operator
-                    predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 500 Data size: 89000 Basic stats: 
COMPLETE Column stats: COMPLETE
-                    Select Operator
-                      expressions: key (type: string), value (type: string)
-                      outputColumnNames: _col0, _col1
-                      Statistics: Num rows: 500 Data size: 89000 Basic stats: 
COMPLETE Column stats: COMPLETE
-                      Map Join Operator
-                        condition map:
-                             Inner Join 0 to 1
-                        keys:
-                          0 UDFToDouble(_col0) (type: double)
-                          1 UDFToDouble(_col0) (type: double)
-                        outputColumnNames: _col0, _col1, _col3
-                        input vertices:
-                          0 Map 1
-                        Statistics: Num rows: 550 Data size: 97900 Basic 
stats: COMPLETE Column stats: NONE
-                        HybridGraceHashJoin: true
-                        Select Operator
-                          expressions: _col0 (type: int), _col1 (type: 
string), _col3 (type: string)
-                          outputColumnNames: _col0, _col1, _col2
-                          Statistics: Num rows: 550 Data size: 97900 Basic 
stats: COMPLETE Column stats: NONE
-                          File Output Operator
-                            compressed: false
-                            Statistics: Num rows: 550 Data size: 97900 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: explain
-select a.key, b.key from (select key from tab_part where key > 1) a join 
(select key from tab_part where key > 2) b on a.key = b.key
-PREHOOK: type: QUERY
-POSTHOOK: query: explain
-select a.key, b.key from (select key from tab_part where key > 1) a join 
(select key from tab_part where key > 2) b on a.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 2 (CUSTOM_EDGE)
-#### A masked pattern was here ####
-      Vertices:
-        Map 1 
-            Map Operator Tree:
-                TableScan
-                  alias: tab_part
-                  Statistics: Num rows: 500 Data size: 9312 Basic stats: 
COMPLETE Column stats: NONE
-                  Filter Operator
-                    predicate: ((key > 1) and (key > 2)) (type: boolean)
-                    Statistics: Num rows: 55 Data size: 1024 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 55 Data size: 1024 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
-                        input vertices:
-                          1 Map 2
-                        Statistics: Num rows: 60 Data size: 1126 Basic stats: 
COMPLETE Column stats: NONE
-                        HybridGraceHashJoin: true
-                        File Output Operator
-                          compressed: false
-                          Statistics: Num rows: 60 Data size: 1126 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
-        Map 2 
-            Map Operator Tree:
-                TableScan
-                  alias: tab_part
-                  Statistics: Num rows: 500 Data size: 9312 Basic stats: 
COMPLETE Column stats: NONE
-                  Filter Operator
-                    predicate: ((key > 2) and (key > 1)) (type: boolean)
-                    Statistics: Num rows: 55 Data size: 1024 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 55 Data size: 1024 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: 55 Data size: 1024 Basic stats: 
COMPLETE Column stats: NONE
-
-  Stage: Stage-0
-    Fetch Operator
-      limit: -1
-      Processor Tree:
-        ListSink
-
-PREHOOK: query: explain
-select a.key, b.key from (select key from tab_part where key > 1) a left outer 
join (select key from tab_part where key > 2) b on a.key = b.key
-PREHOOK: type: QUERY
-POSTHOOK: query: explain
-select a.key, b.key from (select key from tab_part where key > 1) a left outer 
join (select key from tab_part where key > 2) b on a.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 2 (CUSTOM_EDGE)
-#### A masked pattern was here ####
-      Vertices:
-        Map 1 
-            Map Operator Tree:
-                TableScan
-                  alias: tab_part
-                  Statistics: Num rows: 500 Data size: 9312 Basic stats: 
COMPLETE Column stats: NONE
-                  Filter Operator
-                    predicate: (key > 1) (type: boolean)
-                    Statistics: Num rows: 166 Data size: 3091 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 166 Data size: 3091 Basic stats: 
COMPLETE Column stats: NONE
-                      Map Join Operator
-                        condition map:
-                             Left Outer Join0 to 1
-                        keys:
-                          0 _col0 (type: int)
-                          1 _col0 (type: int)
-                        outputColumnNames: _col0, _col1
-                        input vertices:
-                          1 Map 2
-                        Statistics: Num rows: 182 Data size: 3400 Basic stats: 
COMPLETE Column stats: NONE
-                        HybridGraceHashJoin: true
-                        File Output Operator
-                          compressed: false
-                          Statistics: Num rows: 182 Data size: 3400 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
-        Map 2 
-            Map Operator Tree:
-                TableScan
-                  alias: tab_part
-                  Statistics: Num rows: 500 Data size: 9312 Basic stats: 
COMPLETE Column stats: NONE
-                  Filter Operator
-                    predicate: ((key > 2) and (key > 1)) (type: boolean)
-                    Statistics: Num rows: 55 Data size: 1024 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 55 Data size: 1024 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: 55 Data size: 1024 Basic stats: 
COMPLETE Column stats: NONE
-
-  Stage: Stage-0
-    Fetch Operator
-      limit: -1
-      Processor Tree:
-        ListSink
-
-PREHOOK: query: explain
-select a.key, b.key from (select key from tab_part where key > 1) a right 
outer join (select key from tab_part where key > 2) b on a.key = b.key
-PREHOOK: type: QUERY
-POSTHOOK: query: explain
-select a.key, b.key from (select key from tab_part where key > 1) a right 
outer join (select key from tab_part where key > 2) b on a.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 2 <- Map 1 (CUSTOM_EDGE)
-#### A masked pattern was here ####
-      Vertices:
-        Map 1 
-            Map Operator Tree:
-                TableScan
-                  alias: tab_part
-                  Statistics: Num rows: 500 Data size: 9312 Basic stats: 
COMPLETE Column stats: NONE
-                  Filter Operator
-                    predicate: ((key > 1) and (key > 2)) (type: boolean)
-                    Statistics: Num rows: 55 Data size: 1024 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 55 Data size: 1024 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: 55 Data size: 1024 Basic stats: 
COMPLETE Column stats: NONE
-        Map 2 
-            Map Operator Tree:
-                TableScan
-                  alias: tab_part
-                  Statistics: Num rows: 500 Data size: 9312 Basic stats: 
COMPLETE Column stats: NONE
-                  Filter Operator
-                    predicate: (key > 2) (type: boolean)
-                    Statistics: Num rows: 166 Data size: 3091 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 166 Data size: 3091 Basic stats: 
COMPLETE Column stats: NONE
-                      Map Join Operator
-                        condition map:
-                             Right Outer Join0 to 1
-                        keys:
-                          0 _col0 (type: int)
-                          1 _col0 (type: int)
-                        outputColumnNames: _col0, _col1
-                        input vertices:
-                          0 Map 1
-                        Statistics: Num rows: 182 Data size: 3400 Basic stats: 
COMPLETE Column stats: NONE
-                        HybridGraceHashJoin: true
-                        File Output Operator
-                          compressed: false
-                          Statistics: Num rows: 182 Data size: 3400 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: explain select a.key, b.key from (select distinct key from 
tab) a join tab b on b.key = a.key
-PREHOOK: type: QUERY
-POSTHOOK: query: explain select a.key, b.key from (select distinct key from 
tab) a join tab b on b.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:
-        Reducer 2 <- Map 1 (SIMPLE_EDGE), Map 3 (CUSTOM_SIMPLE_EDGE)
-#### A masked pattern was here ####
-      Vertices:
-        Map 1 
-            Map Operator Tree:
-                TableScan
-                  alias: tab
-                  Statistics: Num rows: 242 Data size: 4502 Basic stats: 
COMPLETE Column stats: NONE
-                  Filter Operator
-                    predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 242 Data size: 4502 Basic stats: 
COMPLETE Column stats: NONE
-                    Group By Operator
-                      keys: key (type: int)
-                      mode: hash
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 242 Data size: 4502 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: 242 Data size: 4502 Basic stats: 
COMPLETE Column stats: NONE
-        Map 3 
-            Map Operator Tree:
-                TableScan
-                  alias: b
-                  Statistics: Num rows: 242 Data size: 4502 Basic stats: 
COMPLETE Column stats: NONE
-                  Filter Operator
-                    predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 242 Data size: 4502 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int)
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 242 Data size: 4502 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: 242 Data size: 4502 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: 121 Data size: 2251 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
-                  input vertices:
-                    1 Map 3
-                  Statistics: Num rows: 266 Data size: 4952 Basic stats: 
COMPLETE Column stats: NONE
-                  HybridGraceHashJoin: true
-                  File Output Operator
-                    compressed: false
-                    Statistics: Num rows: 266 Data size: 4952 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: explain select a.value, b.value from (select distinct value 
from tab) a join tab b on b.key = a.value
-PREHOOK: type: QUERY
-POSTHOOK: query: explain select a.value, b.value from (select distinct value 
from tab) a join tab b on b.key = a.value
-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), Map 3 (BROADCAST_EDGE)
-#### A masked pattern was here ####
-      Vertices:
-        Map 1 
-            Map Operator Tree:
-                TableScan
-                  alias: tab
-                  Statistics: Num rows: 242 Data size: 4502 Basic stats: 
COMPLETE Column stats: NONE
-                  Filter Operator
-                    predicate: value is not null (type: boolean)
-                    Statistics: Num rows: 242 Data size: 4502 Basic stats: 
COMPLETE Column stats: NONE
-                    Group By Operator
-                      keys: value (type: string)
-                      mode: hash
-                      outputColumnNames: _col0
-                      Statistics: Num rows: 242 Data size: 4502 Basic stats: 
COMPLETE Column stats: NONE
-                      Reduce Output Operator
-                        key expressions: _col0 (type: string)
-                        sort order: +
-                        Map-reduce partition columns: _col0 (type: string)
-                        Statistics: Num rows: 242 Data size: 4502 Basic stats: 
COMPLETE Column stats: NONE
-        Map 3 
-            Map Operator Tree:
-                TableScan
-                  alias: b
-                  Statistics: Num rows: 242 Data size: 4502 Basic stats: 
COMPLETE Column stats: NONE
-                  Filter Operator
-                    predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 242 Data size: 4502 Basic stats: 
COMPLETE Column stats: NONE
-                    Select Operator
-                      expressions: key (type: int), value (type: string)
-                      outputColumnNames: _col0, _col1
-                      Statistics: Num rows: 242 Data size: 4502 Basic stats: 
COMPLETE Column stats: NONE
-                      Reduce Output Operator
-                        key expressions: UDFToDouble(_col0) (type: double)
-                        sort order: +
-                        Map-reduce partition columns: UDFToDouble(_col0) 
(type: double)
-                        Statistics: Num rows: 242 Data size: 4502 Basic stats: 
COMPLETE Column stats: NONE
-                        value expressions: _col1 (type: string)
-        Reducer 2 
-            Reduce Operator Tree:
-              Group By Operator
-                keys: KEY._col0 (type: string)
-                mode: mergepartial
-                outputColumnNames: _col0
-                Statistics: Num rows: 121 Data size: 2251 Basic stats: 
COMPLETE Column stats: NONE
-                Map Join Operator
-                  condition map:
-                       Inner Join 0 to 1
-                  keys:
-                    0 UDFToDouble(_col0) (type: double)
-                    1 UDFToDouble(_col0) (type: double)
-                  outputColumnNames: _col0, _col2
-                  input vertices:
-                    1 Map 3
-                  Statistics: Num rows: 266 Data size: 4952 Basic stats: 
COMPLETE Column stats: NONE
-                  HybridGraceHashJoin: true
-                  Select Operator
-                    expressions: _col0 (type: string), _col2 (type: string)
-                    outputColumnNames: _col0, _col1
-                    Statistics: Num rows: 266 Data size: 4952 Basic stats: 
COMPLETE Column stats: NONE
-                    File Output Operator
-                      compressed: false
-                      Statistics: Num rows: 266 Data size: 4952 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
-

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