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From "Scott Blum (JIRA)" <>
Subject [jira] [Commented] (SOLR-8914) ZkStateReader's refreshLiveNodes(Watcher) is not thread safe
Date Tue, 19 Apr 2016 18:09:25 GMT


Scott Blum commented on SOLR-8914:

I think it's definitely work backporting, and I'm happy to do it.  I already backported it
to our own 5.4.1 fork; the live code merges pretty clean but I had to do a little work on
the test code as some test infra has changed.

[] Should I just do the backports and push commits?

> ZkStateReader's refreshLiveNodes(Watcher) is not thread safe
> ------------------------------------------------------------
>                 Key: SOLR-8914
>                 URL:
>             Project: Solr
>          Issue Type: Bug
>            Reporter: Hoss Man
>            Assignee: Mark Miller
>         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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