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From "Joydeep Sen Sarma (JIRA)" <j...@apache.org>
Subject [jira] Created: (HIVE-131) insert overwrite directory leaves behind uncommitted/tmp files from failed tasks
Date Sun, 07 Dec 2008 10:07:44 GMT
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
            Priority: Critical


_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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