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From "Kanna Karanam (JIRA)" <j...@apache.org>
Subject [jira] [Work started] (HIVE-3659) TestHiveHistory::testQueryloglocParentDirNotExist Test fails on Windows because of some resource leaks in ZK
Date Fri, 02 Nov 2012 18:05:12 GMT

     [ https://issues.apache.org/jira/browse/HIVE-3659?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Work on HIVE-3659 started by Kanna Karanam.

> TestHiveHistory::testQueryloglocParentDirNotExist Test fails on Windows because of some
resource leaks in ZK
> ------------------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-3659
>                 URL: https://issues.apache.org/jira/browse/HIVE-3659
>             Project: Hive
>          Issue Type: Bug
>          Components: Tests
>    Affects Versions: 0.10.0, 0.9.1
>            Reporter: Kanna Karanam
>            Assignee: Kanna Karanam
>              Labels: Windows
>             Fix For: 0.10.0, 0.9.1
>
>         Attachments: HIVE-3659.1.patch.txt
>
>
> Hive uses ZK for locking. In some test cases, ZK is not behaving well. In thread dumps,
I saw it is waiting for locks to be released but they were not getting released. Hive tries
to release locks but keeps failing, it eventually times out for its release attempts, which
in default settings takes 10 mins. This is also the cause of why some queries take extra-ordinarily
long to run. I suggest to disable ZK locking till ZK is certified for windows.
> In this test case, I don’t see a requirement to use ZK so I am disabling the HiveConf.ConfVars.HIVE_SUPPORT_CONCURRENCY
to work around the issue.

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