PREHOOK: query: CREATE TABLE T1(key STRING, val STRING)
SKEWED BY (key) ON ((2)) STORED AS TEXTFILE
PREHOOK: type: CREATETABLE
PREHOOK: Output: database:default
PREHOOK: Output: default@T1
POSTHOOK: query: CREATE TABLE T1(key STRING, val STRING)
SKEWED BY (key) ON ((2)) STORED AS TEXTFILE
POSTHOOK: type: CREATETABLE
POSTHOOK: Output: database:default
POSTHOOK: Output: default@T1
PREHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T1.txt' INTO TABLE T1
PREHOOK: type: LOAD
#### A masked pattern was here ####
PREHOOK: Output: default@t1
POSTHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T1.txt' INTO TABLE T1
POSTHOOK: type: LOAD
#### A masked pattern was here ####
POSTHOOK: Output: default@t1
PREHOOK: query: CREATE TABLE T2(key STRING, val STRING)
SKEWED BY (key) ON ((3)) STORED AS TEXTFILE
PREHOOK: type: CREATETABLE
PREHOOK: Output: database:default
PREHOOK: Output: default@T2
POSTHOOK: query: CREATE TABLE T2(key STRING, val STRING)
SKEWED BY (key) ON ((3)) STORED AS TEXTFILE
POSTHOOK: type: CREATETABLE
POSTHOOK: Output: database:default
POSTHOOK: Output: default@T2
PREHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T2.txt' INTO TABLE T2
PREHOOK: type: LOAD
#### A masked pattern was here ####
PREHOOK: Output: default@t2
POSTHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T2.txt' INTO TABLE T2
POSTHOOK: type: LOAD
#### A masked pattern was here ####
POSTHOOK: Output: default@t2
PREHOOK: query: -- a simple join query with skew on both the tables on the join key
-- adding a order by at the end to make the results deterministic

EXPLAIN
SELECT a.*, b.* FROM T1 a JOIN T2 b ON a.key = b.key
PREHOOK: type: QUERY
POSTHOOK: query: -- a simple join query with skew on both the tables on the join key
-- adding a order by at the end to make the results deterministic

EXPLAIN
SELECT a.*, b.* FROM T1 a JOIN T2 b ON a.key = b.key
POSTHOOK: type: QUERY
STAGE DEPENDENCIES:
  Stage-1 is a root stage
  Stage-2 depends on stages: Stage-1, Stage-4
  Stage-4 is a root stage
  Stage-0 depends on stages: Stage-2

STAGE PLANS:
  Stage: Stage-1
    Map Reduce
      Map Operator Tree:
          TableScan
            alias: a
            Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
            Filter Operator
              predicate: (key is not null and ((key = '2') or (key = '3'))) (type: boolean)
              Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
              Reduce Output Operator
                key expressions: key (type: string)
                sort order: +
                Map-reduce partition columns: key (type: string)
                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
                value expressions: val (type: string)
          TableScan
            alias: b
            Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
            Filter Operator
              predicate: (key is not null and ((key = '2') or (key = '3'))) (type: boolean)
              Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
              Reduce Output Operator
                key expressions: key (type: string)
                sort order: +
                Map-reduce partition columns: key (type: string)
                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
                value expressions: val (type: string)
      Reduce Operator Tree:
        Join Operator
          condition map:
               Inner Join 0 to 1
          keys:
            0 key (type: string)
            1 key (type: string)
          outputColumnNames: _col0, _col1, _col5, _col6
          Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
          Select Operator
            expressions: _col0 (type: string), _col1 (type: string), _col5 (type: string), _col6 (type: string)
            outputColumnNames: _col0, _col1, _col2, _col3
            Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
            File Output Operator
              compressed: false
              table:
                  input format: org.apache.hadoop.mapred.SequenceFileInputFormat
                  output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
                  serde: org.apache.hadoop.hive.serde2.lazybinary.LazyBinarySerDe

  Stage: Stage-2
    Map Reduce
      Map Operator Tree:
          TableScan
            Union
              Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
              File Output Operator
                compressed: false
                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
                table:
                    input format: org.apache.hadoop.mapred.TextInputFormat
                    output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
                    serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
          TableScan
            Union
              Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
              File Output Operator
                compressed: false
                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
                table:
                    input format: org.apache.hadoop.mapred.TextInputFormat
                    output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
                    serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe

  Stage: Stage-4
    Map Reduce
      Map Operator Tree:
          TableScan
            alias: a
            Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
            Filter Operator
              predicate: (key is not null and (not ((key = '2') or (key = '3')))) (type: boolean)
              Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
              Reduce Output Operator
                key expressions: key (type: string)
                sort order: +
                Map-reduce partition columns: key (type: string)
                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
                value expressions: val (type: string)
          TableScan
            alias: b
            Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
            Filter Operator
              predicate: (key is not null and (not ((key = '2') or (key = '3')))) (type: boolean)
              Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
              Reduce Output Operator
                key expressions: key (type: string)
                sort order: +
                Map-reduce partition columns: key (type: string)
                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
                value expressions: val (type: string)
      Reduce Operator Tree:
        Join Operator
          condition map:
               Inner Join 0 to 1
          outputColumnNames: _col0, _col1, _col5, _col6
          Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
          Select Operator
            expressions: _col0 (type: string), _col1 (type: string), _col5 (type: string), _col6 (type: string)
            outputColumnNames: _col0, _col1, _col2, _col3
            Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
            File Output Operator
              compressed: false
              table:
                  input format: org.apache.hadoop.mapred.SequenceFileInputFormat
                  output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
                  serde: org.apache.hadoop.hive.serde2.lazybinary.LazyBinarySerDe

  Stage: Stage-0
    Fetch Operator
      limit: -1
      Processor Tree:
        ListSink

PREHOOK: query: SELECT a.*, b.* FROM T1 a JOIN T2 b ON a.key = b.key
ORDER BY a.key, b.key, a.val, b.val
PREHOOK: type: QUERY
PREHOOK: Input: default@t1
PREHOOK: Input: default@t2
#### A masked pattern was here ####
POSTHOOK: query: SELECT a.*, b.* FROM T1 a JOIN T2 b ON a.key = b.key
ORDER BY a.key, b.key, a.val, b.val
POSTHOOK: type: QUERY
POSTHOOK: Input: default@t1
POSTHOOK: Input: default@t2
#### A masked pattern was here ####
2	12	2	22
3	13	3	13
8	18	8	18
8	18	8	18
8	28	8	18
8	28	8	18
PREHOOK: query: -- test outer joins also

EXPLAIN
SELECT a.*, b.* FROM T1 a RIGHT OUTER JOIN T2 b ON a.key = b.key
PREHOOK: type: QUERY
POSTHOOK: query: -- test outer joins also

EXPLAIN
SELECT a.*, b.* FROM T1 a RIGHT OUTER JOIN T2 b ON a.key = b.key
POSTHOOK: type: QUERY
STAGE DEPENDENCIES:
  Stage-1 is a root stage
  Stage-2 depends on stages: Stage-1, Stage-4
  Stage-4 is a root stage
  Stage-0 depends on stages: Stage-2

STAGE PLANS:
  Stage: Stage-1
    Map Reduce
      Map Operator Tree:
          TableScan
            alias: a
            Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
            Filter Operator
              predicate: ((key = '2') or (key = '3')) (type: boolean)
              Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
              Reduce Output Operator
                key expressions: key (type: string)
                sort order: +
                Map-reduce partition columns: key (type: string)
                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
                value expressions: val (type: string)
          TableScan
            alias: b
            Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
            Filter Operator
              predicate: ((key = '2') or (key = '3')) (type: boolean)
              Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
              Reduce Output Operator
                key expressions: key (type: string)
                sort order: +
                Map-reduce partition columns: key (type: string)
                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
                value expressions: val (type: string)
      Reduce Operator Tree:
        Join Operator
          condition map:
               Right Outer Join0 to 1
          keys:
            0 key (type: string)
            1 key (type: string)
          outputColumnNames: _col0, _col1, _col5, _col6
          Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
          Select Operator
            expressions: _col0 (type: string), _col1 (type: string), _col5 (type: string), _col6 (type: string)
            outputColumnNames: _col0, _col1, _col2, _col3
            Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
            File Output Operator
              compressed: false
              table:
                  input format: org.apache.hadoop.mapred.SequenceFileInputFormat
                  output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
                  serde: org.apache.hadoop.hive.serde2.lazybinary.LazyBinarySerDe

  Stage: Stage-2
    Map Reduce
      Map Operator Tree:
          TableScan
            Union
              Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
              File Output Operator
                compressed: false
                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
                table:
                    input format: org.apache.hadoop.mapred.TextInputFormat
                    output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
                    serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
          TableScan
            Union
              Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
              File Output Operator
                compressed: false
                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
                table:
                    input format: org.apache.hadoop.mapred.TextInputFormat
                    output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
                    serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe

  Stage: Stage-4
    Map Reduce
      Map Operator Tree:
          TableScan
            alias: a
            Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
            Filter Operator
              predicate: (not ((key = '2') or (key = '3'))) (type: boolean)
              Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
              Reduce Output Operator
                key expressions: key (type: string)
                sort order: +
                Map-reduce partition columns: key (type: string)
                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
                value expressions: val (type: string)
          TableScan
            alias: b
            Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
            Filter Operator
              predicate: (not ((key = '2') or (key = '3'))) (type: boolean)
              Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
              Reduce Output Operator
                key expressions: key (type: string)
                sort order: +
                Map-reduce partition columns: key (type: string)
                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
                value expressions: val (type: string)
      Reduce Operator Tree:
        Join Operator
          condition map:
               Right Outer Join0 to 1
          outputColumnNames: _col0, _col1, _col5, _col6
          Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
          Select Operator
            expressions: _col0 (type: string), _col1 (type: string), _col5 (type: string), _col6 (type: string)
            outputColumnNames: _col0, _col1, _col2, _col3
            Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
            File Output Operator
              compressed: false
              table:
                  input format: org.apache.hadoop.mapred.SequenceFileInputFormat
                  output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
                  serde: org.apache.hadoop.hive.serde2.lazybinary.LazyBinarySerDe

  Stage: Stage-0
    Fetch Operator
      limit: -1
      Processor Tree:
        ListSink

PREHOOK: query: SELECT a.*, b.* FROM T1 a RIGHT OUTER JOIN T2 b ON a.key = b.key
ORDER BY a.key, b.key, a.val, b.val
PREHOOK: type: QUERY
PREHOOK: Input: default@t1
PREHOOK: Input: default@t2
#### A masked pattern was here ####
POSTHOOK: query: SELECT a.*, b.* FROM T1 a RIGHT OUTER JOIN T2 b ON a.key = b.key
ORDER BY a.key, b.key, a.val, b.val
POSTHOOK: type: QUERY
POSTHOOK: Input: default@t1
POSTHOOK: Input: default@t2
#### A masked pattern was here ####
NULL	NULL	4	14
NULL	NULL	5	15
2	12	2	22
3	13	3	13
8	18	8	18
8	18	8	18
8	28	8	18
8	28	8	18
PREHOOK: query: -- an aggregation at the end should not change anything

EXPLAIN
SELECT count(1) FROM T1 a JOIN T2 b ON a.key = b.key
PREHOOK: type: QUERY
POSTHOOK: query: -- an aggregation at the end should not change anything

EXPLAIN
SELECT count(1) FROM T1 a JOIN T2 b ON a.key = b.key
POSTHOOK: type: QUERY
STAGE DEPENDENCIES:
  Stage-1 is a root stage
  Stage-2 depends on stages: Stage-1, Stage-4
  Stage-4 is a root stage
  Stage-0 depends on stages: Stage-2

STAGE PLANS:
  Stage: Stage-1
    Map Reduce
      Map Operator Tree:
          TableScan
            alias: a
            Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
            Filter Operator
              predicate: (key is not null and ((key = '2') or (key = '3'))) (type: boolean)
              Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
              Reduce Output Operator
                key expressions: key (type: string)
                sort order: +
                Map-reduce partition columns: key (type: string)
                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
          TableScan
            alias: b
            Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
            Filter Operator
              predicate: (key is not null and ((key = '2') or (key = '3'))) (type: boolean)
              Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
              Reduce Output Operator
                key expressions: key (type: string)
                sort order: +
                Map-reduce partition columns: key (type: string)
                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
      Reduce Operator Tree:
        Join Operator
          condition map:
               Inner Join 0 to 1
          keys:
            0 key (type: string)
            1 key (type: string)
          Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
          File Output Operator
            compressed: false
            table:
                input format: org.apache.hadoop.mapred.SequenceFileInputFormat
                output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
                serde: org.apache.hadoop.hive.serde2.lazybinary.LazyBinarySerDe

  Stage: Stage-2
    Map Reduce
      Map Operator Tree:
          TableScan
            Union
              Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
              Group By Operator
                aggregations: count(1)
                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)
          TableScan
            Union
              Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
              Group By Operator
                aggregations: count(1)
                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)
      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.TextInputFormat
                output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
                serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe

  Stage: Stage-4
    Map Reduce
      Map Operator Tree:
          TableScan
            alias: a
            Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
            Filter Operator
              predicate: (key is not null and (not ((key = '2') or (key = '3')))) (type: boolean)
              Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
              Reduce Output Operator
                key expressions: key (type: string)
                sort order: +
                Map-reduce partition columns: key (type: string)
                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
          TableScan
            alias: b
            Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
            Filter Operator
              predicate: (key is not null and (not ((key = '2') or (key = '3')))) (type: boolean)
              Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
              Reduce Output Operator
                key expressions: key (type: string)
                sort order: +
                Map-reduce partition columns: key (type: string)
                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
      Reduce Operator Tree:
        Join Operator
          condition map:
               Inner Join 0 to 1
          Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
          File Output Operator
            compressed: false
            table:
                input format: org.apache.hadoop.mapred.SequenceFileInputFormat
                output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
                serde: org.apache.hadoop.hive.serde2.lazybinary.LazyBinarySerDe

  Stage: Stage-0
    Fetch Operator
      limit: -1
      Processor Tree:
        ListSink

PREHOOK: query: SELECT count(1) FROM T1 a JOIN T2 b ON a.key = b.key
PREHOOK: type: QUERY
PREHOOK: Input: default@t1
PREHOOK: Input: default@t2
#### A masked pattern was here ####
POSTHOOK: query: SELECT count(1) FROM T1 a JOIN T2 b ON a.key = b.key
POSTHOOK: type: QUERY
POSTHOOK: Input: default@t1
POSTHOOK: Input: default@t2
#### A masked pattern was here ####
6
PREHOOK: query: EXPLAIN
SELECT count(1) FROM T1 a RIGHT OUTER JOIN T2 b ON a.key = b.key
PREHOOK: type: QUERY
POSTHOOK: query: EXPLAIN
SELECT count(1) FROM T1 a RIGHT OUTER JOIN T2 b ON a.key = b.key
POSTHOOK: type: QUERY
STAGE DEPENDENCIES:
  Stage-1 is a root stage
  Stage-2 depends on stages: Stage-1, Stage-4
  Stage-4 is a root stage
  Stage-0 depends on stages: Stage-2

STAGE PLANS:
  Stage: Stage-1
    Map Reduce
      Map Operator Tree:
          TableScan
            alias: a
            Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
            Filter Operator
              predicate: ((key = '2') or (key = '3')) (type: boolean)
              Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
              Reduce Output Operator
                key expressions: key (type: string)
                sort order: +
                Map-reduce partition columns: key (type: string)
                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
          TableScan
            alias: b
            Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
            Filter Operator
              predicate: ((key = '2') or (key = '3')) (type: boolean)
              Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
              Reduce Output Operator
                key expressions: key (type: string)
                sort order: +
                Map-reduce partition columns: key (type: string)
                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
      Reduce Operator Tree:
        Join Operator
          condition map:
               Right Outer Join0 to 1
          keys:
            0 key (type: string)
            1 key (type: string)
          Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
          File Output Operator
            compressed: false
            table:
                input format: org.apache.hadoop.mapred.SequenceFileInputFormat
                output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
                serde: org.apache.hadoop.hive.serde2.lazybinary.LazyBinarySerDe

  Stage: Stage-2
    Map Reduce
      Map Operator Tree:
          TableScan
            Union
              Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
              Group By Operator
                aggregations: count(1)
                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)
          TableScan
            Union
              Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
              Group By Operator
                aggregations: count(1)
                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)
      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.TextInputFormat
                output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
                serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe

  Stage: Stage-4
    Map Reduce
      Map Operator Tree:
          TableScan
            alias: a
            Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
            Filter Operator
              predicate: (not ((key = '2') or (key = '3'))) (type: boolean)
              Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
              Reduce Output Operator
                key expressions: key (type: string)
                sort order: +
                Map-reduce partition columns: key (type: string)
                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
          TableScan
            alias: b
            Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
            Filter Operator
              predicate: (not ((key = '2') or (key = '3'))) (type: boolean)
              Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
              Reduce Output Operator
                key expressions: key (type: string)
                sort order: +
                Map-reduce partition columns: key (type: string)
                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
      Reduce Operator Tree:
        Join Operator
          condition map:
               Right Outer Join0 to 1
          Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
          File Output Operator
            compressed: false
            table:
                input format: org.apache.hadoop.mapred.SequenceFileInputFormat
                output format: org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
                serde: org.apache.hadoop.hive.serde2.lazybinary.LazyBinarySerDe

  Stage: Stage-0
    Fetch Operator
      limit: -1
      Processor Tree:
        ListSink

PREHOOK: query: SELECT count(1) FROM T1 a RIGHT OUTER JOIN T2 b ON a.key = b.key
PREHOOK: type: QUERY
PREHOOK: Input: default@t1
PREHOOK: Input: default@t2
#### A masked pattern was here ####
POSTHOOK: query: SELECT count(1) FROM T1 a RIGHT OUTER JOIN T2 b ON a.key = b.key
POSTHOOK: type: QUERY
POSTHOOK: Input: default@t1
POSTHOOK: Input: default@t2
#### A masked pattern was here ####
8