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From "Scott Blum (JIRA)" <>
Subject [jira] [Commented] (SOLR-8914) ZkStateReader's refreshLiveNodes(Watcher) is not thread safe
Date Fri, 01 Apr 2016 21:43:25 GMT


Scott Blum commented on SOLR-8914:

What's the next step here?  I really think, despite the minority report, that this patch should
be a drastic improvement on the current situation, and fix a real production bug.

> ZkStateReader's refreshLiveNodes(Watcher) is not thread safe
> ------------------------------------------------------------
>                 Key: SOLR-8914
>                 URL:
>             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,
> Jenkin's encountered a failure in TestTolerantUpdateProcessorCloud over the weekend....
> {noformat}
> 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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