PREHOOK: query: -- SORT_BEFORE_DIFF

explain
SELECT *
FROM (
  SELECT 1 AS id
  FROM (SELECT * FROM src LIMIT 1) s1
  CLUSTER BY id
  UNION ALL
  SELECT 2 AS id
  FROM (SELECT * FROM src LIMIT 1) s1
  CLUSTER BY id
  UNION ALL
  SELECT 3 AS id
  FROM (SELECT * FROM src LIMIT 1) s2
  UNION ALL
  SELECT 4 AS id
  FROM (SELECT * FROM src LIMIT 1) s2
) a
PREHOOK: type: QUERY
POSTHOOK: query: -- SORT_BEFORE_DIFF

explain
SELECT *
FROM (
  SELECT 1 AS id
  FROM (SELECT * FROM src LIMIT 1) s1
  CLUSTER BY id
  UNION ALL
  SELECT 2 AS id
  FROM (SELECT * FROM src LIMIT 1) s1
  CLUSTER BY id
  UNION ALL
  SELECT 3 AS id
  FROM (SELECT * FROM src LIMIT 1) s2
  UNION ALL
  SELECT 4 AS id
  FROM (SELECT * FROM src LIMIT 1) s2
) 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
      Edges:
        Reducer 11 <- Map 10 (SIMPLE_EDGE), Union 4 (CONTAINS)
        Reducer 2 <- Map 1 (SIMPLE_EDGE)
        Reducer 3 <- Reducer 2 (SIMPLE_EDGE), Union 4 (CONTAINS)
        Reducer 6 <- Map 5 (SIMPLE_EDGE)
        Reducer 7 <- Reducer 6 (SIMPLE_EDGE), Union 4 (CONTAINS)
        Reducer 9 <- Map 8 (SIMPLE_EDGE), Union 4 (CONTAINS)
#### A masked pattern was here ####
      Vertices:
        Map 1 
            Map Operator Tree:
                TableScan
                  alias: src
                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: COMPLETE
                  Select Operator
                    Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: COMPLETE
                    Limit
                      Number of rows: 1
                      Statistics: Num rows: 1 Data size: 0 Basic stats: PARTIAL Column stats: COMPLETE
                      Reduce Output Operator
                        sort order: 
                        Statistics: Num rows: 1 Data size: 0 Basic stats: PARTIAL Column stats: COMPLETE
        Map 10 
            Map Operator Tree:
                TableScan
                  alias: src
                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: COMPLETE
                  Select Operator
                    Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: COMPLETE
                    Limit
                      Number of rows: 1
                      Statistics: Num rows: 1 Data size: 0 Basic stats: PARTIAL Column stats: COMPLETE
                      Reduce Output Operator
                        sort order: 
                        Statistics: Num rows: 1 Data size: 0 Basic stats: PARTIAL Column stats: COMPLETE
        Map 5 
            Map Operator Tree:
                TableScan
                  alias: src
                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: COMPLETE
                  Select Operator
                    Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: COMPLETE
                    Limit
                      Number of rows: 1
                      Statistics: Num rows: 1 Data size: 0 Basic stats: PARTIAL Column stats: COMPLETE
                      Reduce Output Operator
                        sort order: 
                        Statistics: Num rows: 1 Data size: 0 Basic stats: PARTIAL Column stats: COMPLETE
        Map 8 
            Map Operator Tree:
                TableScan
                  alias: src
                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: COMPLETE
                  Select Operator
                    Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: COMPLETE
                    Limit
                      Number of rows: 1
                      Statistics: Num rows: 1 Data size: 0 Basic stats: PARTIAL Column stats: COMPLETE
                      Reduce Output Operator
                        sort order: 
                        Statistics: Num rows: 1 Data size: 0 Basic stats: PARTIAL Column stats: COMPLETE
        Reducer 11 
            Reduce Operator Tree:
              Limit
                Number of rows: 1
                Select Operator
                  expressions: 4 (type: int)
                  outputColumnNames: _col0
                  Select Operator
                    expressions: _col0 (type: int)
                    outputColumnNames: _col0
                    File Output Operator
                      compressed: false
                      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
        Reducer 2 
            Reduce Operator Tree:
              Limit
                Number of rows: 1
                Statistics: Num rows: 1 Data size: 0 Basic stats: PARTIAL Column stats: COMPLETE
                Reduce Output Operator
                  key expressions: 1 (type: int)
                  sort order: +
                  Map-reduce partition columns: 1 (type: int)
                  Statistics: Num rows: 1 Data size: 0 Basic stats: PARTIAL Column stats: COMPLETE
        Reducer 3 
            Reduce Operator Tree:
              Select Operator
                expressions: KEY.reducesinkkey0 (type: int)
                outputColumnNames: _col0
                Select Operator
                  expressions: _col0 (type: int)
                  outputColumnNames: _col0
                  File Output Operator
                    compressed: false
                    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
        Reducer 6 
            Reduce Operator Tree:
              Limit
                Number of rows: 1
                Statistics: Num rows: 1 Data size: 0 Basic stats: PARTIAL Column stats: COMPLETE
                Reduce Output Operator
                  key expressions: 2 (type: int)
                  sort order: +
                  Map-reduce partition columns: 2 (type: int)
                  Statistics: Num rows: 1 Data size: 0 Basic stats: PARTIAL Column stats: COMPLETE
        Reducer 7 
            Reduce Operator Tree:
              Select Operator
                expressions: KEY.reducesinkkey0 (type: int)
                outputColumnNames: _col0
                Select Operator
                  expressions: _col0 (type: int)
                  outputColumnNames: _col0
                  File Output Operator
                    compressed: false
                    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
        Reducer 9 
            Reduce Operator Tree:
              Limit
                Number of rows: 1
                Select Operator
                  expressions: 3 (type: int)
                  outputColumnNames: _col0
                  Select Operator
                    expressions: _col0 (type: int)
                    outputColumnNames: _col0
                    File Output Operator
                      compressed: false
                      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
        Union 4 
            Vertex: Union 4

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

PREHOOK: query: CREATE TABLE union_out (id int)
PREHOOK: type: CREATETABLE
PREHOOK: Output: database:default
PREHOOK: Output: default@union_out
POSTHOOK: query: CREATE TABLE union_out (id int)
POSTHOOK: type: CREATETABLE
POSTHOOK: Output: database:default
POSTHOOK: Output: default@union_out
PREHOOK: query: insert overwrite table union_out 
SELECT *
FROM (
  SELECT 1 AS id
  FROM (SELECT * FROM src LIMIT 1) s1
  CLUSTER BY id
  UNION ALL
  SELECT 2 AS id
  FROM (SELECT * FROM src LIMIT 1) s1
  CLUSTER BY id
  UNION ALL
  SELECT 3 AS id
  FROM (SELECT * FROM src LIMIT 1) s2
  UNION ALL
  SELECT 4 AS id
  FROM (SELECT * FROM src LIMIT 1) s2
) a
PREHOOK: type: QUERY
PREHOOK: Input: default@src
PREHOOK: Output: default@union_out
POSTHOOK: query: insert overwrite table union_out 
SELECT *
FROM (
  SELECT 1 AS id
  FROM (SELECT * FROM src LIMIT 1) s1
  CLUSTER BY id
  UNION ALL
  SELECT 2 AS id
  FROM (SELECT * FROM src LIMIT 1) s1
  CLUSTER BY id
  UNION ALL
  SELECT 3 AS id
  FROM (SELECT * FROM src LIMIT 1) s2
  UNION ALL
  SELECT 4 AS id
  FROM (SELECT * FROM src LIMIT 1) s2
) a
POSTHOOK: type: QUERY
POSTHOOK: Input: default@src
POSTHOOK: Output: default@union_out
POSTHOOK: Lineage: union_out.id EXPRESSION []
PREHOOK: query: select * from union_out cluster by id
PREHOOK: type: QUERY
PREHOOK: Input: default@union_out
#### A masked pattern was here ####
POSTHOOK: query: select * from union_out cluster by id
POSTHOOK: type: QUERY
POSTHOOK: Input: default@union_out
#### A masked pattern was here ####
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