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Posted to dev@hive.apache.org by "WangHualei (Jira)" <ji...@apache.org> on 2021/04/19 07:18:00 UTC

[jira] [Created] (HIVE-25025) Distcp In MoveTask may cause stats info lost

WangHualei created HIVE-25025:
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             Summary: Distcp In MoveTask may cause stats info lost
                 Key: HIVE-25025
                 URL: https://issues.apache.org/jira/browse/HIVE-25025
             Project: Hive
          Issue Type: Bug
          Components: Hive
         Environment: example:

set hive.exec.copyfile.maxsize=0;
set hive.exec.copyfile.maxnumfiles=0;

insert overwrite table abd_new select * from abc;

select count(*) from abd_new ;

select * from abd_new ;

then the  count(*) result will be 0, but select * will display real data, because stats info lost.
            Reporter: WangHualei
            Assignee: WangHualei


after set  _Run_ _as_ _end_ _user_ _instead_ _of_ _Hive_ _user_ , when execute insert overwrite , In MoveTask ,if source byte > HIVE_EXEC_COPYFILE_MAXSIZE  and source file count> HIVE_EXEC_COPYFILE_MAXNUMFILES , HIve will use distcp method, it may cause tmp stats file lost. 



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