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Posted to common-dev@hadoop.apache.org by "stack (JIRA)" <ji...@apache.org> on 2007/09/12 02:37:32 UTC

[jira] Resolved: (HADOOP-1796) [hbase] deadlock on HLog rolling its log

     [ https://issues.apache.org/jira/browse/HADOOP-1796?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

stack resolved HADOOP-1796.
---------------------------

       Resolution: Fixed
    Fix Version/s: 0.15.0

Reviewing the attached stack traces, root problem is threads are hung trying to take out a write lock on memcache.  Jim subsequently fixed a problem where memcache constructions could fail leaving outstanding read locks preventing other threads from ever again being able to get a write lock on memcache.  Resolving the issue as fixed by HADOOP-1805.

> [hbase] deadlock on HLog rolling its log
> ----------------------------------------
>
>                 Key: HADOOP-1796
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1796
>             Project: Hadoop
>          Issue Type: Bug
>          Components: contrib/hbase
>            Reporter: stack
>            Assignee: stack
>            Priority: Minor
>             Fix For: 0.15.0
>
>         Attachments: hbase-stack-regionserver-aa0-000-12.u.powerset.com.out
>
>
> Found a region server hung on hlog.

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