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https://issues.apache.org/jira/browse/LUCENE-2730?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael McCandless updated LUCENE-2730:
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Attachment: LUCENE-2730.patch
Attached patch.
The deadlock in TestIndexWriterExceptions was due to locks being acquired in
the wrong order; to fix this I've removed synchronized from TestHash.abort.
DocumentsWriter idles all other threads before calling abort so we don't need
to sync. I'll also remove this from trunk and 3.x.
TestAtomicUpdate's deadlock only happens when autoCommit=true, when one thread
has called commit and the flush by that commit tries to spawn new merges, which
enters CMS who then hits the max merge thread count and waits for merge threads
to finish while another merge thread is attempting an autoCommit. I don't
think we need to make any changes to 3.x/trunk for this (autoCommit is gone).
> intermittent deadlock in TestAtomicUpdate,TestIndexWriterExceptions
> -------------------------------------------------------------------
>
> Key: LUCENE-2730
> URL: https://issues.apache.org/jira/browse/LUCENE-2730
> Project: Lucene - Java
> Issue Type: Bug
> Components: Index
> Affects Versions: 2.9.3, 3.0.2
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Fix For: 2.9.4, 3.0.3
>
> Attachments: LUCENE-2730.patch
>
>
> While backporting issues for 2.9.x/3.0.x release I hit deadlocks in these two
> tests, under both test-core and test-tag.
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