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https://issues.apache.org/jira/browse/SOLR-13616?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16884390#comment-16884390
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ASF subversion and git services commented on SOLR-13616:
--------------------------------------------------------

Commit 7ddba3b7123f11d387ff395516cf46c607ac21ee in lucene-solr's branch 
refs/heads/master from Chris M. Hostetter
[ https://gitbox.apache.org/repos/asf?p=lucene-solr.git;h=7ddba3b ]

Harden DeleteReplicaTest

* tighten assertions related to type of watcher that should be removed

* use waitForActiveCollection before deleting collections to work around 
SOLR-13616 and/or SOLR-13627


> Possible racecondition/deadlock between collection DELETE and PrepRecovery ? 
> (TestPolicyCloud failures)
> -------------------------------------------------------------------------------------------------------
>
>                 Key: SOLR-13616
>                 URL: https://issues.apache.org/jira/browse/SOLR-13616
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>            Reporter: Hoss Man
>            Priority: Major
>         Attachments: SOLR-13616.test-incomplete.patch, 
> thetaphi_Lucene-Solr-master-Linux_24358.log.txt
>
>
> Based on some recent jenkins failures in TestPolicyCloud, I suspect there is 
> a possible deadlock condition when attempting to delete a collection while 
> recovery is in progress.
> I haven't been able to identify exactly where/why/how the problem occurs, but 
> it does not appear to be a test specific problem, and seems like it could 
> potentially affect anyone unlucky enough to issue poorly timed DELETE.
> Details to follow in comments...



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