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From "Simon Willnauer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-4147) rollback/preparecommit thread hazard
Date Mon, 18 Jun 2012 11:36:43 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-4147?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13395826#comment-13395826
] 

Simon Willnauer commented on LUCENE-4147:
-----------------------------------------

mike, do we really need to acquire the commit lock? from my perspective it would be enough
to add an ensure open when we assigne pendingCommit (inside the sync block) so that racing
threads hit already close exceptions.

regarding the thread safety issue in DocWriter can you paste the trace?

                
> rollback/preparecommit thread hazard
> ------------------------------------
>
>                 Key: LUCENE-4147
>                 URL: https://issues.apache.org/jira/browse/LUCENE-4147
>             Project: Lucene - Java
>          Issue Type: Bug
>    Affects Versions: 4.0
>            Reporter: Robert Muir
>         Attachments: LUCENE-4147.patch, LUCENE-4147.patch
>
>
> found by http://jenkins.sd-datasolutions.de/job/Lucene-Solr-4.x-Windows-Java7-64/70/
> rollback should never throw this exception, as it documents it clears any pendingcommits.
> but it calls closeInternal outside of any sync block, so it looks like there is a race
here.

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