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From "Alan Gates (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-8966) Delta files created by hive hcatalog streaming cannot be compacted
Date Fri, 05 Dec 2014 15:41:12 GMT

    [ https://issues.apache.org/jira/browse/HIVE-8966?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14235645#comment-14235645
] 

Alan Gates commented on HIVE-8966:
----------------------------------

Jihong, thanks for doing the testing on this.  

We could change this to not compact the current delta file, or we could change the cleaner
to not remove the delta file that was still open during compaction.  I'll try to look at this
in the next couple of days.  We need to get this fixed for 0.14.1.

> Delta files created by hive hcatalog streaming cannot be compacted
> ------------------------------------------------------------------
>
>                 Key: HIVE-8966
>                 URL: https://issues.apache.org/jira/browse/HIVE-8966
>             Project: Hive
>          Issue Type: Bug
>          Components: HCatalog
>    Affects Versions: 0.14.0
>         Environment: hive
>            Reporter: Jihong Liu
>            Assignee: Alan Gates
>            Priority: Critical
>             Fix For: 0.14.1
>
>         Attachments: HIVE-8966.patch
>
>
> hive hcatalog streaming will also create a file like bucket_n_flush_length in each delta
directory. Where "n" is the bucket number. But the compactor.CompactorMR think this file also
needs to compact. However this file of course cannot be compacted, so compactor.CompactorMR
will not continue to do the compaction. 
> Did a test, after removed the bucket_n_flush_length file, then the "alter table partition
compact" finished successfully. If don't delete that file, nothing will be compacted. 
> This is probably a very severity bug. Both 0.13 and 0.14 have this issue



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