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https://issues.apache.org/jira/browse/SOLR-8914?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15220429#comment-15220429
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Scott Blum commented on SOLR-8914:
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Erick, if all the errors you're seeing are related to Zookeeper errors, then
I'm not sure you're actually running into any of the issues we fixed.
ZkStateReader is meant to be fault tolerant with respect to ZK connectivity,
but there's no reason to the think that the particular test expectations in
TestStressLiveNodes would always hold true in the face of ZK connectivity loss;
I would expect that TestStressLiveNodes assumes that the ZkStateReader -> ZK
connection is always up.
If you're seeing a either a deadlock problem, or a data problem in the absence
of any ZK errors, then that would be a problem.
> ZkStateReader's refreshLiveNodes(Watcher) is not thread safe
> ------------------------------------------------------------
>
> Key: SOLR-8914
> URL: https://issues.apache.org/jira/browse/SOLR-8914
> Project: Solr
> Issue Type: Bug
> Reporter: Hoss Man
> Attachments: SOLR-8914.patch, SOLR-8914.patch, SOLR-8914.patch,
> SOLR-8914.patch, jenkins.thetaphi.de_Lucene-Solr-6.x-Solaris_32.log.txt,
> live_node_mentions_port56361_with_threadIds.log.txt,
> live_nodes_mentions.log.txt
>
>
> Jenkin's encountered a failure in TestTolerantUpdateProcessorCloud over the
> weekend....
> {noformat}
> http://jenkins.thetaphi.de/job/Lucene-Solr-6.x-Solaris/32/consoleText
> Checking out Revision c46d7686643e7503304cb35dfe546bce9c6684e7
> (refs/remotes/origin/branch_6x)
> Using Java: 64bit/jdk1.8.0 -XX:+UseCompressedOops -XX:+UseG1GC
> {noformat}
> The failure happened during the static setup of the test, when a
> MiniSolrCloudCluster & several clients are initialized -- before any code
> related to TolerantUpdateProcessor is ever used.
> I can't reproduce this, or really make sense of what i'm (not) seeing here in
> the logs, so i'm filing this jira with my analysis in the hopes that someone
> else can help make sense of it.
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