PREHOOK: query: CREATE TABLE mytable(key STRING, value STRING)
ROW FORMAT DELIMITED
FIELDS TERMINATED BY '9'
STORED AS TEXTFILE
PREHOOK: type: CREATETABLE
PREHOOK: Output: database:default
PREHOOK: Output: default@mytable
POSTHOOK: query: CREATE TABLE mytable(key STRING, value STRING)
ROW FORMAT DELIMITED
FIELDS TERMINATED BY '9'
STORED AS TEXTFILE
POSTHOOK: type: CREATETABLE
POSTHOOK: Output: database:default
POSTHOOK: Output: default@mytable
PREHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/string.txt' INTO TABLE mytable
PREHOOK: type: LOAD
#### A masked pattern was here ####
PREHOOK: Output: default@mytable
POSTHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/string.txt' INTO TABLE mytable
POSTHOOK: type: LOAD
#### A masked pattern was here ####
POSTHOOK: Output: default@mytable
PREHOOK: query: EXPLAIN
SELECT REGEXP_REPLACE(REGEXP_REPLACE(REGEXP_REPLACE(key, '\001', '^A'), '\0', '^@'), '\002', '^B'), value
FROM (
        SELECT key, sum(value) as value
        FROM mytable
        GROUP BY key
) a
PREHOOK: type: QUERY
POSTHOOK: query: EXPLAIN
SELECT REGEXP_REPLACE(REGEXP_REPLACE(REGEXP_REPLACE(key, '\001', '^A'), '\0', '^@'), '\002', '^B'), value
FROM (
        SELECT key, sum(value) as value
        FROM mytable
        GROUP BY key
) a
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: mytable
            Statistics: Num rows: 0 Data size: 93 Basic stats: PARTIAL Column stats: NONE
            Select Operator
              expressions: key (type: string), value (type: string)
              outputColumnNames: _col0, _col1
              Statistics: Num rows: 0 Data size: 93 Basic stats: PARTIAL Column stats: NONE
              Group By Operator
                aggregations: sum(_col1)
                keys: _col0 (type: string)
                mode: hash
                outputColumnNames: _col0, _col1
                Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
                Reduce Output Operator
                  key expressions: _col0 (type: string)
                  sort order: +
                  Map-reduce partition columns: _col0 (type: string)
                  Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
                  value expressions: _col1 (type: double)
      Reduce Operator Tree:
        Group By Operator
          aggregations: sum(VALUE._col0)
          keys: KEY._col0 (type: string)
          mode: mergepartial
          outputColumnNames: _col0, _col1
          Statistics: Num rows: 0 Data size: 0 Basic stats: NONE Column stats: NONE
          Select Operator
            expressions: regexp_replace(regexp_replace(regexp_replace(_col0, '', '^A'), ' ', '^@'), '', '^B') (type: string), _col1 (type: double)
            outputColumnNames: _col0, _col1
            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-0
    Fetch Operator
      limit: -1
      Processor Tree:
        ListSink

PREHOOK: query: SELECT REGEXP_REPLACE(REGEXP_REPLACE(REGEXP_REPLACE(key, '\001', '^A'), '\0', '^@'), '\002', '^B'), value
FROM (
        SELECT key, sum(value) as value
        FROM mytable
        GROUP BY key
) a
PREHOOK: type: QUERY
PREHOOK: Input: default@mytable
#### A masked pattern was here ####
POSTHOOK: query: SELECT REGEXP_REPLACE(REGEXP_REPLACE(REGEXP_REPLACE(key, '\001', '^A'), '\0', '^@'), '\002', '^B'), value
FROM (
        SELECT key, sum(value) as value
        FROM mytable
        GROUP BY key
) a
POSTHOOK: type: QUERY
POSTHOOK: Input: default@mytable
#### A masked pattern was here ####
^@^@^@	7.0
^@^A^@	9.0
^@test^@	2.0
^A^@^A	10.0
^A^A^A	8.0
^Atest^A	3.0
a^@bc^A^B^A^@	1.0
test^@^@^A^Atest	6.0
test^@test	4.0
test^Atest	5.0