PREHOOK: query: DESCRIBE FUNCTION stack
PREHOOK: type: DESCFUNCTION
POSTHOOK: query: DESCRIBE FUNCTION stack
POSTHOOK: type: DESCFUNCTION
stack(n, cols...) - turns k columns into n rows of size k/n each
PREHOOK: query: EXPLAIN SELECT x, y FROM src LATERAL VIEW STACK(2, 'x', array(1), 'z') a AS x, y LIMIT 2
PREHOOK: type: QUERY
POSTHOOK: query: EXPLAIN SELECT x, y FROM src LATERAL VIEW STACK(2, 'x', array(1), 'z') a AS x, y LIMIT 2
POSTHOOK: type: QUERY
STAGE DEPENDENCIES:
  Stage-1 is a root stage
  Stage-0 is a root stage

STAGE PLANS:
  Stage: Stage-1
    Map Reduce
      Map Operator Tree:
          TableScan
            alias: src
            Statistics: Num rows: 0 Data size: 5812 Basic stats: PARTIAL Column stats: COMPLETE
            Lateral View Forward
              Statistics: Num rows: 0 Data size: 5812 Basic stats: PARTIAL Column stats: COMPLETE
              Select Operator
                Statistics: Num rows: 0 Data size: 5812 Basic stats: PARTIAL Column stats: COMPLETE
                Lateral View Join Operator
                  outputColumnNames: _col4, _col5
                  Statistics: Num rows: 0 Data size: 11624 Basic stats: PARTIAL Column stats: COMPLETE
                  Select Operator
                    expressions: _col4 (type: string), _col5 (type: array<int>)
                    outputColumnNames: _col0, _col1
                    Statistics: Num rows: 0 Data size: 11624 Basic stats: PARTIAL Column stats: COMPLETE
                    Limit
                      Number of rows: 2
                      Statistics: Num rows: 0 Data size: 11624 Basic stats: PARTIAL Column stats: COMPLETE
                      File Output Operator
                        compressed: false
                        Statistics: Num rows: 0 Data size: 11624 Basic stats: PARTIAL Column stats: COMPLETE
                        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
              Select Operator
                expressions: 2 (type: int), 'x' (type: string), array(1) (type: array<int>), 'z' (type: string)
                outputColumnNames: _col0, _col1, _col2, _col3
                Statistics: Num rows: 0 Data size: 5812 Basic stats: PARTIAL Column stats: COMPLETE
                UDTF Operator
                  Statistics: Num rows: 0 Data size: 5812 Basic stats: PARTIAL Column stats: COMPLETE
                  function name: stack
                  Lateral View Join Operator
                    outputColumnNames: _col4, _col5
                    Statistics: Num rows: 0 Data size: 11624 Basic stats: PARTIAL Column stats: COMPLETE
                    Select Operator
                      expressions: _col4 (type: string), _col5 (type: array<int>)
                      outputColumnNames: _col0, _col1
                      Statistics: Num rows: 0 Data size: 11624 Basic stats: PARTIAL Column stats: COMPLETE
                      Limit
                        Number of rows: 2
                        Statistics: Num rows: 0 Data size: 11624 Basic stats: PARTIAL Column stats: COMPLETE
                        File Output Operator
                          compressed: false
                          Statistics: Num rows: 0 Data size: 11624 Basic stats: PARTIAL Column stats: COMPLETE
                          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: 2

PREHOOK: query: EXPLAIN SELECT x, y FROM src LATERAL VIEW STACK(2, 'x', array(1), 'z', array(4)) a AS x, y LIMIT 2
PREHOOK: type: QUERY
POSTHOOK: query: EXPLAIN SELECT x, y FROM src LATERAL VIEW STACK(2, 'x', array(1), 'z', array(4)) a AS x, y LIMIT 2
POSTHOOK: type: QUERY
STAGE DEPENDENCIES:
  Stage-1 is a root stage
  Stage-0 is a root stage

STAGE PLANS:
  Stage: Stage-1
    Map Reduce
      Map Operator Tree:
          TableScan
            alias: src
            Statistics: Num rows: 0 Data size: 5812 Basic stats: PARTIAL Column stats: COMPLETE
            Lateral View Forward
              Statistics: Num rows: 0 Data size: 5812 Basic stats: PARTIAL Column stats: COMPLETE
              Select Operator
                Statistics: Num rows: 0 Data size: 5812 Basic stats: PARTIAL Column stats: COMPLETE
                Lateral View Join Operator
                  outputColumnNames: _col4, _col5
                  Statistics: Num rows: 0 Data size: 11624 Basic stats: PARTIAL Column stats: COMPLETE
                  Select Operator
                    expressions: _col4 (type: string), _col5 (type: array<int>)
                    outputColumnNames: _col0, _col1
                    Statistics: Num rows: 0 Data size: 11624 Basic stats: PARTIAL Column stats: COMPLETE
                    Limit
                      Number of rows: 2
                      Statistics: Num rows: 0 Data size: 11624 Basic stats: PARTIAL Column stats: COMPLETE
                      File Output Operator
                        compressed: false
                        Statistics: Num rows: 0 Data size: 11624 Basic stats: PARTIAL Column stats: COMPLETE
                        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
              Select Operator
                expressions: 2 (type: int), 'x' (type: string), array(1) (type: array<int>), 'z' (type: string), array(4) (type: array<int>)
                outputColumnNames: _col0, _col1, _col2, _col3, _col4
                Statistics: Num rows: 0 Data size: 5812 Basic stats: PARTIAL Column stats: COMPLETE
                UDTF Operator
                  Statistics: Num rows: 0 Data size: 5812 Basic stats: PARTIAL Column stats: COMPLETE
                  function name: stack
                  Lateral View Join Operator
                    outputColumnNames: _col4, _col5
                    Statistics: Num rows: 0 Data size: 11624 Basic stats: PARTIAL Column stats: COMPLETE
                    Select Operator
                      expressions: _col4 (type: string), _col5 (type: array<int>)
                      outputColumnNames: _col0, _col1
                      Statistics: Num rows: 0 Data size: 11624 Basic stats: PARTIAL Column stats: COMPLETE
                      Limit
                        Number of rows: 2
                        Statistics: Num rows: 0 Data size: 11624 Basic stats: PARTIAL Column stats: COMPLETE
                        File Output Operator
                          compressed: false
                          Statistics: Num rows: 0 Data size: 11624 Basic stats: PARTIAL Column stats: COMPLETE
                          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: 2

PREHOOK: query: SELECT x, y FROM src LATERAL VIEW STACK(2, 'x', array(1), 'z') a AS x, y LIMIT 2
PREHOOK: type: QUERY
PREHOOK: Input: default@src
#### A masked pattern was here ####
POSTHOOK: query: SELECT x, y FROM src LATERAL VIEW STACK(2, 'x', array(1), 'z') a AS x, y LIMIT 2
POSTHOOK: type: QUERY
POSTHOOK: Input: default@src
#### A masked pattern was here ####
x	[1]
z	NULL
PREHOOK: query: SELECT x, y FROM src LATERAL VIEW STACK(2, 'x', array(1), 'z', array(4)) a AS x, y LIMIT 2
PREHOOK: type: QUERY
PREHOOK: Input: default@src
#### A masked pattern was here ####
POSTHOOK: query: SELECT x, y FROM src LATERAL VIEW STACK(2, 'x', array(1), 'z', array(4)) a AS x, y LIMIT 2
POSTHOOK: type: QUERY
POSTHOOK: Input: default@src
#### A masked pattern was here ####
x	[1]
z	[4]