[jira] Commented: (HIVE-131) insert overwrite directory leaves behind uncommitted/tmp files from failed tasks

["Zheng Shao (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-131?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12674382#action_12674382 ] 

Zheng Shao commented on HIVE-131:
---------------------------------

+1 Looks good to me.


> insert overwrite directory leaves behind uncommitted/tmp files from failed tasks
> --------------------------------------------------------------------------------
>
>                 Key: HIVE-131
>                 URL: https://issues.apache.org/jira/browse/HIVE-131
>             Project: Hadoop Hive
>          Issue Type: Bug
>          Components: Query Processor
>            Reporter: Joydeep Sen Sarma
>            Assignee: Joydeep Sen Sarma
>            Priority: Critical
>         Attachments: HIVE-131.patch.1, hive-131.patch.2
>
>
> _tmp files are getting left behind on insert overwrite directory:
> /user/jssarma/ctst1/40422_m_000195_0.deflate  <r 3> 13285 2008-12-07 01:47  rw-r--r-- jssarma supergroup
> /user/jssarma/ctst1/40422_m_000196_0.deflate  <r 3> 3055  2008-12-07 01:46  rw-r--r-- jssarma supergroup
> /user/jssarma/ctst1/_tmp.40422_m_000033_0 <r 3> 0 2008-12-07 01:53  rw-r--r-- jssarma supergroup
> /user/jssarma/ctst1/_tmp.40422_m_000037_1 <r 3> 0 2008-12-07 01:53  rw-r--r-- jssarma supergroup
> this happened with speculative execution. the code looks good (in fact in this case many speculative tasks were launched - and only a couple caused problems). Almost seems like these files did not appear in the namespace until after the map-reduce job finished and the movetask did a listing of the output dir ..

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