PREHOOK: query: CREATE TABLE T1(key STRING, val STRING) STORED AS TEXTFILE
PREHOOK: type: CREATETABLE
PREHOOK: Output: database:default
PREHOOK: Output: default@T1
POSTHOOK: query: CREATE TABLE T1(key STRING, val STRING) STORED AS TEXTFILE
POSTHOOK: type: CREATETABLE
POSTHOOK: Output: database:default
POSTHOOK: Output: default@T1
PREHOOK: query: CREATE TABLE T2(key STRING, val STRING) STORED AS TEXTFILE
PREHOOK: type: CREATETABLE
PREHOOK: Output: database:default
PREHOOK: Output: default@T2
POSTHOOK: query: CREATE TABLE T2(key STRING, val STRING) STORED AS TEXTFILE
POSTHOOK: type: CREATETABLE
POSTHOOK: Output: database:default
POSTHOOK: Output: default@T2
PREHOOK: query: CREATE TABLE T3(key STRING, val STRING) STORED AS TEXTFILE
PREHOOK: type: CREATETABLE
PREHOOK: Output: database:default
PREHOOK: Output: default@T3
POSTHOOK: query: CREATE TABLE T3(key STRING, val STRING) STORED AS TEXTFILE
POSTHOOK: type: CREATETABLE
POSTHOOK: Output: database:default
POSTHOOK: Output: default@T3
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: 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: LOAD DATA LOCAL INPATH '../../data/files/T3.txt' INTO TABLE T3
PREHOOK: type: LOAD
#### A masked pattern was here ####
PREHOOK: Output: default@t3
POSTHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/T3.txt' INTO TABLE T3
POSTHOOK: type: LOAD
#### A masked pattern was here ####
POSTHOOK: Output: default@t3
PREHOOK: query: -- SORT_QUERY_RESULTS

EXPLAIN FROM T1 a JOIN src c ON c.key+1=a.key
SELECT a.key, a.val, c.key
PREHOOK: type: QUERY
POSTHOOK: query: -- SORT_QUERY_RESULTS

EXPLAIN FROM T1 a JOIN src c ON c.key+1=a.key
SELECT a.key, a.val, c.key
POSTHOOK: type: QUERY
STAGE DEPENDENCIES:
  Stage-1 is a root stage
  Stage-0 depends on stages: Stage-1

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: UDFToDouble(key) is not null (type: boolean)
              Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
              Reduce Output Operator
                key expressions: UDFToDouble(key) (type: double)
                sort order: +
                Map-reduce partition columns: UDFToDouble(key) (type: double)
                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
                value expressions: key (type: string), val (type: string)
          TableScan
            alias: c
            Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
            Filter Operator
              predicate: (key + 1) is not null (type: boolean)
              Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
              Reduce Output Operator
                key expressions: (key + 1) (type: double)
                sort order: +
                Map-reduce partition columns: (key + 1) (type: double)
                Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
                value expressions: key (type: string)
      Reduce Operator Tree:
        Join Operator
          condition map:
               Inner Join 0 to 1
          keys:
            0 UDFToDouble(key) (type: double)
            1 (key + 1) (type: double)
          outputColumnNames: _col0, _col1, _col5
          Statistics: Num rows: 275 Data size: 2921 Basic stats: COMPLETE Column stats: NONE
          Select Operator
            expressions: _col0 (type: string), _col1 (type: string), _col5 (type: string)
            outputColumnNames: _col0, _col1, _col2
            Statistics: Num rows: 275 Data size: 2921 Basic stats: COMPLETE Column stats: NONE
            File Output Operator
              compressed: false
              Statistics: Num rows: 275 Data size: 2921 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-0
    Fetch Operator
      limit: -1
      Processor Tree:
        ListSink

PREHOOK: query: EXPLAIN FROM T1 a JOIN src c ON c.key+1=a.key
SELECT /*+ STREAMTABLE(a) */ a.key, a.val, c.key
PREHOOK: type: QUERY
POSTHOOK: query: EXPLAIN FROM T1 a JOIN src c ON c.key+1=a.key
SELECT /*+ STREAMTABLE(a) */ a.key, a.val, c.key
POSTHOOK: type: QUERY
STAGE DEPENDENCIES:
  Stage-1 is a root stage
  Stage-0 depends on stages: Stage-1

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: UDFToDouble(key) is not null (type: boolean)
              Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
              Reduce Output Operator
                key expressions: UDFToDouble(key) (type: double)
                sort order: +
                Map-reduce partition columns: UDFToDouble(key) (type: double)
                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
                value expressions: key (type: string), val (type: string)
          TableScan
            alias: c
            Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
            Filter Operator
              predicate: (key + 1) is not null (type: boolean)
              Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
              Reduce Output Operator
                key expressions: (key + 1) (type: double)
                sort order: +
                Map-reduce partition columns: (key + 1) (type: double)
                Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
                value expressions: key (type: string)
      Reduce Operator Tree:
        Join Operator
          condition map:
               Inner Join 0 to 1
          keys:
            0 UDFToDouble(key) (type: double)
            1 (key + 1) (type: double)
          outputColumnNames: _col0, _col1, _col5
          Statistics: Num rows: 275 Data size: 2921 Basic stats: COMPLETE Column stats: NONE
          Select Operator
            expressions: _col0 (type: string), _col1 (type: string), _col5 (type: string)
            outputColumnNames: _col0, _col1, _col2
            Statistics: Num rows: 275 Data size: 2921 Basic stats: COMPLETE Column stats: NONE
            File Output Operator
              compressed: false
              Statistics: Num rows: 275 Data size: 2921 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-0
    Fetch Operator
      limit: -1
      Processor Tree:
        ListSink

PREHOOK: query: FROM T1 a JOIN src c ON c.key+1=a.key
SELECT a.key, a.val, c.key
PREHOOK: type: QUERY
PREHOOK: Input: default@src
PREHOOK: Input: default@t1
#### A masked pattern was here ####
POSTHOOK: query: FROM T1 a JOIN src c ON c.key+1=a.key
SELECT a.key, a.val, c.key
POSTHOOK: type: QUERY
POSTHOOK: Input: default@src
POSTHOOK: Input: default@t1
#### A masked pattern was here ####
1	11	0
1	11	0
1	11	0
3	13	2
PREHOOK: query: FROM T1 a JOIN src c ON c.key+1=a.key
SELECT /*+ STREAMTABLE(a) */ a.key, a.val, c.key
PREHOOK: type: QUERY
PREHOOK: Input: default@src
PREHOOK: Input: default@t1
#### A masked pattern was here ####
POSTHOOK: query: FROM T1 a JOIN src c ON c.key+1=a.key
SELECT /*+ STREAMTABLE(a) */ a.key, a.val, c.key
POSTHOOK: type: QUERY
POSTHOOK: Input: default@src
POSTHOOK: Input: default@t1
#### A masked pattern was here ####
1	11	0
1	11	0
1	11	0
3	13	2
PREHOOK: query: EXPLAIN FROM T1 a
  LEFT OUTER JOIN T2 b ON (b.key=a.key)
  RIGHT OUTER JOIN T3 c ON (c.val = a.val)
SELECT a.key, b.key, a.val, c.val
PREHOOK: type: QUERY
POSTHOOK: query: EXPLAIN FROM T1 a
  LEFT OUTER JOIN T2 b ON (b.key=a.key)
  RIGHT OUTER JOIN T3 c ON (c.val = a.val)
SELECT a.key, b.key, a.val, c.val
POSTHOOK: type: QUERY
STAGE DEPENDENCIES:
  Stage-1 is a root stage
  Stage-2 depends on stages: Stage-1
  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
            Reduce Output Operator
              key expressions: key (type: string)
              sort order: +
              Map-reduce partition columns: key (type: string)
              Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
              value expressions: val (type: string)
          TableScan
            alias: b
            Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 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: 30 Basic stats: PARTIAL Column stats: NONE
      Reduce Operator Tree:
        Join Operator
          condition map:
               Left Outer Join0 to 1
          keys:
            0 key (type: string)
            1 key (type: string)
          outputColumnNames: _col0, _col1, _col5
          Statistics: Num rows: 0 Data size: 33 Basic stats: PARTIAL 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
            Reduce Output Operator
              key expressions: _col1 (type: string)
              sort order: +
              Map-reduce partition columns: _col1 (type: string)
              Statistics: Num rows: 0 Data size: 33 Basic stats: PARTIAL Column stats: NONE
              value expressions: _col0 (type: string), _col5 (type: string)
          TableScan
            alias: c
            Statistics: Num rows: 0 Data size: 20 Basic stats: PARTIAL Column stats: NONE
            Reduce Output Operator
              key expressions: val (type: string)
              sort order: +
              Map-reduce partition columns: val (type: string)
              Statistics: Num rows: 0 Data size: 20 Basic stats: PARTIAL Column stats: NONE
      Reduce Operator Tree:
        Join Operator
          condition map:
               Right Outer Join0 to 1
          keys:
            0 _col1 (type: string)
            1 val (type: string)
          outputColumnNames: _col0, _col1, _col5, _col11
          Statistics: Num rows: 0 Data size: 36 Basic stats: PARTIAL Column stats: NONE
          Select Operator
            expressions: _col0 (type: string), _col5 (type: string), _col1 (type: string), _col11 (type: string)
            outputColumnNames: _col0, _col1, _col2, _col3
            Statistics: Num rows: 0 Data size: 36 Basic stats: PARTIAL Column stats: NONE
            File Output Operator
              compressed: false
              Statistics: Num rows: 0 Data size: 36 Basic stats: PARTIAL 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-0
    Fetch Operator
      limit: -1
      Processor Tree:
        ListSink

PREHOOK: query: EXPLAIN FROM T1 a
  LEFT OUTER JOIN T2 b ON (b.key=a.key)
  RIGHT OUTER JOIN T3 c ON (c.val = a.val)
SELECT /*+ STREAMTABLE(a) */ a.key, b.key, a.val, c.val
PREHOOK: type: QUERY
POSTHOOK: query: EXPLAIN FROM T1 a
  LEFT OUTER JOIN T2 b ON (b.key=a.key)
  RIGHT OUTER JOIN T3 c ON (c.val = a.val)
SELECT /*+ STREAMTABLE(a) */ a.key, b.key, a.val, c.val
POSTHOOK: type: QUERY
STAGE DEPENDENCIES:
  Stage-1 is a root stage
  Stage-2 depends on stages: Stage-1
  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
            Reduce Output Operator
              key expressions: key (type: string)
              sort order: +
              Map-reduce partition columns: key (type: string)
              Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
              value expressions: val (type: string)
          TableScan
            alias: b
            Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL 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: 30 Basic stats: PARTIAL Column stats: NONE
      Reduce Operator Tree:
        Join Operator
          condition map:
               Left Outer Join0 to 1
          keys:
            0 key (type: string)
            1 key (type: string)
          outputColumnNames: _col0, _col1, _col5
          Statistics: Num rows: 0 Data size: 33 Basic stats: PARTIAL 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
            Reduce Output Operator
              key expressions: _col1 (type: string)
              sort order: +
              Map-reduce partition columns: _col1 (type: string)
              Statistics: Num rows: 0 Data size: 33 Basic stats: PARTIAL Column stats: NONE
              value expressions: _col0 (type: string), _col5 (type: string)
          TableScan
            alias: c
            Statistics: Num rows: 0 Data size: 20 Basic stats: PARTIAL Column stats: NONE
            Reduce Output Operator
              key expressions: val (type: string)
              sort order: +
              Map-reduce partition columns: val (type: string)
              Statistics: Num rows: 0 Data size: 20 Basic stats: PARTIAL Column stats: NONE
      Reduce Operator Tree:
        Join Operator
          condition map:
               Right Outer Join0 to 1
          keys:
            0 _col1 (type: string)
            1 val (type: string)
          outputColumnNames: _col0, _col1, _col5, _col11
          Statistics: Num rows: 0 Data size: 36 Basic stats: PARTIAL Column stats: NONE
          Select Operator
            expressions: _col0 (type: string), _col5 (type: string), _col1 (type: string), _col11 (type: string)
            outputColumnNames: _col0, _col1, _col2, _col3
            Statistics: Num rows: 0 Data size: 36 Basic stats: PARTIAL Column stats: NONE
            File Output Operator
              compressed: false
              Statistics: Num rows: 0 Data size: 36 Basic stats: PARTIAL 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-0
    Fetch Operator
      limit: -1
      Processor Tree:
        ListSink

PREHOOK: query: FROM T1 a
  LEFT OUTER JOIN T2 b ON (b.key=a.key)
  RIGHT OUTER JOIN T3 c ON (c.val = a.val)
SELECT a.key, b.key, a.val, c.val
PREHOOK: type: QUERY
PREHOOK: Input: default@t1
PREHOOK: Input: default@t2
PREHOOK: Input: default@t3
#### A masked pattern was here ####
POSTHOOK: query: FROM T1 a
  LEFT OUTER JOIN T2 b ON (b.key=a.key)
  RIGHT OUTER JOIN T3 c ON (c.val = a.val)
SELECT a.key, b.key, a.val, c.val
POSTHOOK: type: QUERY
POSTHOOK: Input: default@t1
POSTHOOK: Input: default@t2
POSTHOOK: Input: default@t3
#### A masked pattern was here ####
2	2	12	12
7	NULL	17	17
NULL	NULL	NULL	14
NULL	NULL	NULL	16
PREHOOK: query: FROM T1 a
  LEFT OUTER JOIN T2 b ON (b.key=a.key)
  RIGHT OUTER JOIN T3 c ON (c.val = a.val)
SELECT /*+ STREAMTABLE(a) */ a.key, b.key, a.val, c.val
PREHOOK: type: QUERY
PREHOOK: Input: default@t1
PREHOOK: Input: default@t2
PREHOOK: Input: default@t3
#### A masked pattern was here ####
POSTHOOK: query: FROM T1 a
  LEFT OUTER JOIN T2 b ON (b.key=a.key)
  RIGHT OUTER JOIN T3 c ON (c.val = a.val)
SELECT /*+ STREAMTABLE(a) */ a.key, b.key, a.val, c.val
POSTHOOK: type: QUERY
POSTHOOK: Input: default@t1
POSTHOOK: Input: default@t2
POSTHOOK: Input: default@t3
#### A masked pattern was here ####
2	2	12	12
7	NULL	17	17
NULL	NULL	NULL	14
NULL	NULL	NULL	16
PREHOOK: query: EXPLAIN FROM UNIQUEJOIN
  PRESERVE T1 a (a.key, a.val),
  PRESERVE T2 b (b.key, b.val),
  PRESERVE T3 c (c.key, c.val)
SELECT a.key, b.key, c.key
PREHOOK: type: QUERY
POSTHOOK: query: EXPLAIN FROM UNIQUEJOIN
  PRESERVE T1 a (a.key, a.val),
  PRESERVE T2 b (b.key, b.val),
  PRESERVE T3 c (c.key, c.val)
SELECT a.key, b.key, c.key
POSTHOOK: type: QUERY
STAGE DEPENDENCIES:
  Stage-1 is a root stage
  Stage-0 depends on stages: Stage-1

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
            Reduce Output Operator
              key expressions: key (type: string), val (type: string)
              sort order: ++
              Map-reduce partition columns: key (type: string), val (type: string)
              Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
          TableScan
            alias: b
            Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
            Reduce Output Operator
              key expressions: key (type: string), val (type: string)
              sort order: ++
              Map-reduce partition columns: key (type: string), val (type: string)
              Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
          TableScan
            alias: c
            Statistics: Num rows: 0 Data size: 20 Basic stats: PARTIAL Column stats: NONE
            Reduce Output Operator
              key expressions: key (type: string), val (type: string)
              sort order: ++
              Map-reduce partition columns: key (type: string), val (type: string)
              Statistics: Num rows: 0 Data size: 20 Basic stats: PARTIAL Column stats: NONE
      Reduce Operator Tree:
        Join Operator
          condition map:
               Unique Join0 to 0
               Unique Join0 to 0
               Unique Join0 to 0
          keys:
            0 key (type: string), val (type: string)
            1 key (type: string), val (type: string)
            2 key (type: string), val (type: string)
          outputColumnNames: _col0, _col5, _col10
          Statistics: Num rows: 0 Data size: 66 Basic stats: PARTIAL Column stats: NONE
          Select Operator
            expressions: _col0 (type: string), _col5 (type: string), _col10 (type: string)
            outputColumnNames: _col0, _col1, _col2
            Statistics: Num rows: 0 Data size: 66 Basic stats: PARTIAL Column stats: NONE
            File Output Operator
              compressed: false
              Statistics: Num rows: 0 Data size: 66 Basic stats: PARTIAL 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-0
    Fetch Operator
      limit: -1
      Processor Tree:
        ListSink

PREHOOK: query: EXPLAIN FROM UNIQUEJOIN
  PRESERVE T1 a (a.key, a.val),
  PRESERVE T2 b (b.key, b.val),
  PRESERVE T3 c (c.key, c.val)
SELECT /*+ STREAMTABLE(b) */ a.key, b.key, c.key
PREHOOK: type: QUERY
POSTHOOK: query: EXPLAIN FROM UNIQUEJOIN
  PRESERVE T1 a (a.key, a.val),
  PRESERVE T2 b (b.key, b.val),
  PRESERVE T3 c (c.key, c.val)
SELECT /*+ STREAMTABLE(b) */ a.key, b.key, c.key
POSTHOOK: type: QUERY
STAGE DEPENDENCIES:
  Stage-1 is a root stage
  Stage-0 depends on stages: Stage-1

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
            Reduce Output Operator
              key expressions: key (type: string), val (type: string)
              sort order: ++
              Map-reduce partition columns: key (type: string), val (type: string)
              Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
          TableScan
            alias: b
            Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
            Reduce Output Operator
              key expressions: key (type: string), val (type: string)
              sort order: ++
              Map-reduce partition columns: key (type: string), val (type: string)
              Statistics: Num rows: 0 Data size: 30 Basic stats: PARTIAL Column stats: NONE
          TableScan
            alias: c
            Statistics: Num rows: 0 Data size: 20 Basic stats: PARTIAL Column stats: NONE
            Reduce Output Operator
              key expressions: key (type: string), val (type: string)
              sort order: ++
              Map-reduce partition columns: key (type: string), val (type: string)
              Statistics: Num rows: 0 Data size: 20 Basic stats: PARTIAL Column stats: NONE
      Reduce Operator Tree:
        Join Operator
          condition map:
               Unique Join0 to 0
               Unique Join0 to 0
               Unique Join0 to 0
          keys:
            0 key (type: string), val (type: string)
            1 key (type: string), val (type: string)
            2 key (type: string), val (type: string)
          outputColumnNames: _col0, _col5, _col10
          Statistics: Num rows: 0 Data size: 66 Basic stats: PARTIAL Column stats: NONE
          Select Operator
            expressions: _col0 (type: string), _col5 (type: string), _col10 (type: string)
            outputColumnNames: _col0, _col1, _col2
            Statistics: Num rows: 0 Data size: 66 Basic stats: PARTIAL Column stats: NONE
            File Output Operator
              compressed: false
              Statistics: Num rows: 0 Data size: 66 Basic stats: PARTIAL 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-0
    Fetch Operator
      limit: -1
      Processor Tree:
        ListSink

PREHOOK: query: FROM UNIQUEJOIN
  PRESERVE T1 a (a.key, a.val),
  PRESERVE T2 b (b.key, b.val),
  PRESERVE T3 c (c.key, c.val)
SELECT a.key, b.key, c.key
PREHOOK: type: QUERY
PREHOOK: Input: default@t1
PREHOOK: Input: default@t2
PREHOOK: Input: default@t3
#### A masked pattern was here ####
POSTHOOK: query: FROM UNIQUEJOIN
  PRESERVE T1 a (a.key, a.val),
  PRESERVE T2 b (b.key, b.val),
  PRESERVE T3 c (c.key, c.val)
SELECT a.key, b.key, c.key
POSTHOOK: type: QUERY
POSTHOOK: Input: default@t1
POSTHOOK: Input: default@t2
POSTHOOK: Input: default@t3
#### A masked pattern was here ####
1	NULL	NULL
2	NULL	2
3	3	NULL
7	NULL	7
8	8	NULL
8	8	NULL
8	NULL	NULL
NULL	2	NULL
NULL	4	4
NULL	5	NULL
NULL	NULL	6
PREHOOK: query: FROM UNIQUEJOIN
  PRESERVE T1 a (a.key, a.val),
  PRESERVE T2 b (b.key, b.val),
  PRESERVE T3 c (c.key, c.val)
SELECT /*+ STREAMTABLE(b) */ a.key, b.key, c.key
PREHOOK: type: QUERY
PREHOOK: Input: default@t1
PREHOOK: Input: default@t2
PREHOOK: Input: default@t3
#### A masked pattern was here ####
POSTHOOK: query: FROM UNIQUEJOIN
  PRESERVE T1 a (a.key, a.val),
  PRESERVE T2 b (b.key, b.val),
  PRESERVE T3 c (c.key, c.val)
SELECT /*+ STREAMTABLE(b) */ a.key, b.key, c.key
POSTHOOK: type: QUERY
POSTHOOK: Input: default@t1
POSTHOOK: Input: default@t2
POSTHOOK: Input: default@t3
#### A masked pattern was here ####
1	NULL	NULL
2	NULL	2
3	3	NULL
7	NULL	7
8	8	NULL
8	8	NULL
8	NULL	NULL
NULL	2	NULL
NULL	4	4
NULL	5	NULL
NULL	NULL	6