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From "Xiaobing Zhou (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-8497) StatsNoJobTask doesn't close RecordReader, FSDataInputStream of which keeps open to prevent stale data clean
Date Fri, 17 Oct 2014 19:01:34 GMT

    [ https://issues.apache.org/jira/browse/HIVE-8497?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14175390#comment-14175390
] 

Xiaobing Zhou commented on HIVE-8497:
-------------------------------------

Thanks [~prashuj]!

> StatsNoJobTask doesn't close RecordReader, FSDataInputStream of which keeps open to prevent
stale data clean
> ------------------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-8497
>                 URL: https://issues.apache.org/jira/browse/HIVE-8497
>             Project: Hive
>          Issue Type: Bug
>    Affects Versions: 0.14.0
>         Environment: Windows
>            Reporter: Xiaobing Zhou
>            Assignee: Xiaobing Zhou
>            Priority: Critical
>         Attachments: HIVE-8497.1.patch
>
>
> run the test
> {noformat}
> mvn -Phadoop-2  test -Dtest=TestCliDriver -Dqfile=alter_merge_stats_orc.q
> {noformat}
> to reproduce it. Simply, this query does three data loads which generates three base
orc files.
> ANALYZE TABLE...COMPUTE STATISTICS NOSCAN will execute StatsNoJobTask to get stats, where
file handle is held so as not able to clean base file. As a result, after running ALTER TABLE..CONCATENATE,
follow-up queries go to stale base file and merged file.



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