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https://issues.apache.org/jira/browse/LUCENE-4638?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13539154#comment-13539154
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Commit Tag Bot commented on LUCENE-4638:
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[branch_4x commit] Mark Robert Miller
http://svn.apache.org/viewvc?view=revision&revision=1425576
LUCENE-4638, SOLR-3180: revert for now (try using the IW's writeLock to unlock)
> If IndexWriter is interrupted on close and is using a channel (mmap/nio), it
> can throw a ClosedByInterruptException and prevent you from opening a new
> IndexWriter in the same proceses if you are using Native locks.
> ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: LUCENE-4638
> URL: https://issues.apache.org/jira/browse/LUCENE-4638
> Project: Lucene - Core
> Issue Type: Bug
> Reporter: Mark Miller
> Priority: Blocker
> Fix For: 4.1, 5.0
>
> Attachments: LUCENE-4638.patch
>
>
> The ClosedByInterruptException will prevent the index from being unlocked in
> close. If you try and close again, the call will hang. If you are using
> native locks and try to open a new IndexWriter, it will fail to get the lock.
> If you try IW#forceUnlock, it wont work because the not fully closed IW will
> still have the lock.
> ideas:
> * On ClosedByInterruptException, IW should continue trying to close what it
> can and unlock the index? Generally I have see the exception trigger in
> commitInternal.
> * We should add a non static forceUnlock to IW that lets you remove the lock
> and start a new IW?
> * We should make the lock protected so IW sub classes could unlock the index
> in advanced use cases?
> * others?
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