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Posted to issues@tajo.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2014/10/01 05:51:34 UTC

[jira] [Commented] (TAJO-1055) ExecutorPreCompiler does not cache correctly compiled TupleComparators.

    [ https://issues.apache.org/jira/browse/TAJO-1055?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14154303#comment-14154303 ] 

ASF GitHub Bot commented on TAJO-1055:
--------------------------------------

Github user blrunner commented on the pull request:

    https://github.com/apache/tajo/pull/152#issuecomment-57415811
  
    +1
    
    It looks good to me.
    Push it. :)


> ExecutorPreCompiler does not cache correctly compiled TupleComparators.
> -----------------------------------------------------------------------
>
>                 Key: TAJO-1055
>                 URL: https://issues.apache.org/jira/browse/TAJO-1055
>             Project: Tajo
>          Issue Type: Bug
>            Reporter: Hyunsik Choi
>            Assignee: Hyunsik Choi
>            Priority: Minor
>              Labels: block_iteration
>             Fix For: block_iteration
>
>
> ExecutorPreCompiler compiles and caches TupleComparator in CompilationContext for sort operations. But, the current implementation misuses hash key, so it tries to compile TupleComparator for each sort operation. As a result, it causes concurrency problems.



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