jiaxin zou created HIVE-21803:
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             Summary: The result of "insert overwrite table" is inconsistent 
with the original table
                 Key: HIVE-21803
                 URL: https://issues.apache.org/jira/browse/HIVE-21803
             Project: Hive
          Issue Type: Bug
    Affects Versions: 2.3.0
            Reporter: jiaxin zou
         Attachments: 企业微信截图_15591333565716.png

Hi all

I have a tableA partitioned by day/hour( insert overwrite table A 
partiton(day,hour) select ...from table B where day =.. and hour =...) but  
count(*) of table A and B is not equal occasionally (for example, hour =12). 
when i rerun the job (  insert overwrite ..hour =12), the count(*) is 
consistent. That means the bug cannot repeat.

I find the map output records is not equal to the reducer input records

  !企业微信截图_15591333565716.png!

 



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