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https://issues.apache.org/jira/browse/SOLR-7836?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Erick Erickson updated SOLR-7836:
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Attachment: deadlock_test
deadlock_3.res.zip
Here's the stack trace. A few things:
> I got this source by "svn checkout -r1694809
> https://svn.apache.org/repos/asf/lucene/dev/trunk"; and added the test to that
> code base.
> It appears to need two things to fail; a reload operation and a delete by
> query.
> thread WRITER5 and
> TEST-TestReloadDeadlock.testReloadDeadlock-seed#[4CFFCB253DB33784]" are the
> ones I think are fighting here.
> The original fix was to pass the index writer from addDoc0() to addAndDelete,
> but this doesn't work either. I'll see if I can attach a run with that change
> for comparison.
> I've also attached the script I use to run this, although I don't run it in
> parallel.
> Possible deadlock when closing refcounted index writers.
> --------------------------------------------------------
>
> Key: SOLR-7836
> URL: https://issues.apache.org/jira/browse/SOLR-7836
> Project: Solr
> Issue Type: Bug
> Reporter: Erick Erickson
> Assignee: Erick Erickson
> Fix For: Trunk, 5.4
>
> Attachments: SOLR-7836-synch.patch, SOLR-7836.patch, SOLR-7836.patch,
> SOLR-7836.patch, deadlock_3.res.zip, deadlock_test
>
>
> Preliminary patch for what looks like a possible race condition between
> writerFree and pauseWriter in DefaultSorlCoreState.
> Looking for comments and/or why I'm completely missing the boat.
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