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Posted to dev@hive.apache.org by "Pengcheng Xiong (JIRA)" <ji...@apache.org> on 2016/08/17 23:49:20 UTC

[jira] [Created] (HIVE-14563) StatsOptimizer treats NULL in a wrong way

Pengcheng Xiong created HIVE-14563:
--------------------------------------

             Summary: StatsOptimizer treats NULL in a wrong way
                 Key: HIVE-14563
                 URL: https://issues.apache.org/jira/browse/HIVE-14563
             Project: Hive
          Issue Type: Bug
            Reporter: Pengcheng Xiong
            Assignee: Pengcheng Xiong


{code}
OSTHOOK: query: explain select count(key) from (select null as key from src)src
POSTHOOK: type: QUERY
STAGE DEPENDENCIES:
  Stage-0 is a root stage

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

PREHOOK: query: select count(key) from (select null as key from src)src
PREHOOK: type: QUERY
PREHOOK: Input: default@src
#### A masked pattern was here ####
POSTHOOK: query: select count(key) from (select null as key from src)src
POSTHOOK: type: QUERY
POSTHOOK: Input: default@src
#### A masked pattern was here ####
500
{code}



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