zzz=5
system:xxx=5
system:yyy=5
go=5
raw=${hiveconf:zzz}
PREHOOK: query: EXPLAIN SELECT * FROM src where key=5
PREHOOK: type: QUERY
POSTHOOK: query: EXPLAIN SELECT * FROM src where key=5
POSTHOOK: type: QUERY
ABSTRACT SYNTAX TREE:
  (TOK_QUERY (TOK_FROM (TOK_TABREF (TOK_TABNAME src))) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR TOK_ALLCOLREF)) (TOK_WHERE (= (TOK_TABLE_OR_COL key) 5))))

STAGE DEPENDENCIES:
  Stage-1 is a root stage
  Stage-0 is a root stage

STAGE PLANS:
  Stage: Stage-1
    Map Reduce
      Alias -> Map Operator Tree:
        src 
          TableScan
            alias: src
            Filter Operator
              predicate:
                  expr: (key = 5.0)
                  type: boolean
              Select Operator
                expressions:
                      expr: key
                      type: string
                      expr: value
                      type: string
                outputColumnNames: _col0, _col1
                File Output Operator
                  compressed: false
                  GlobalTableId: 0
                  table:
                      input format: org.apache.hadoop.mapred.TextInputFormat
                      output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat

  Stage: Stage-0
    Fetch Operator
      limit: -1


PREHOOK: query: SELECT * FROM src where key=5
PREHOOK: type: QUERY
PREHOOK: Input: default@src
#### A masked pattern was here ####
POSTHOOK: query: SELECT * FROM src where key=5
POSTHOOK: type: QUERY
POSTHOOK: Input: default@src
#### A masked pattern was here ####
5	val_5
5	val_5
5	val_5
c=1