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https://issues.apache.org/jira/browse/SOLR-11821?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16315869#comment-16315869
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ASF subversion and git services commented on SOLR-11821:
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Commit 3d8ef981cbe150d5f443ee15081b3fff2a6ab50e in lucene-solr's branch
refs/heads/master from [~shalinmangar]
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=3d8ef98 ]
SOLR-11821: ConcurrentModificationException in SimSolrCloudTestCase.tearDown
> ConcurrentModificationException in SimSolrCloudTestCase.tearDown
> ----------------------------------------------------------------
>
> Key: SOLR-11821
> URL: https://issues.apache.org/jira/browse/SOLR-11821
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Components: AutoScaling, Tests
> Reporter: Shalin Shekhar Mangar
> Fix For: master (8.0), 7.3
>
> Attachments: SOLR-11821.patch
>
>
> I noticed a few test failures on jenkins such as the following:
> {code}
> FAILED:
> org.apache.solr.cloud.autoscaling.sim.TestComputePlanAction.testNodeLost
> Error Message:
> Stack Trace:
> java.util.ConcurrentModificationException
> at
> __randomizedtesting.SeedInfo.seed([A41248828EFF34E3:1B07867C0D155165]:0)
> at
> java.base/java.util.ArrayList$Itr.checkForComodification(ArrayList.java:937)
> at java.base/java.util.ArrayList$Itr.next(ArrayList.java:891)
> at
> org.apache.solr.cloud.autoscaling.sim.SimSolrCloudTestCase.tearDown(SimSolrCloudTestCase.java:141)
> {code}
> The line in question iterates over a synchronized List but synchronized list
> does not return a safe iterator.
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