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https://issues.apache.org/jira/browse/SOLR-9181?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15362555#comment-15362555
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Alan Woodward commented on SOLR-9181:
-------------------------------------
Got it - if I stick a Thread.sleep() in refreshCollectionList() then the
ZkStateWriterTest errors reproduce for me. It looks as though
forceUpdateCollection() needs to hold both the general update lock and the
collections list update lock, although I'm going to beast this for a while to
make sure that this doesn't deadlock anywhere.
This still leaves the ZkStateReaderTest failures. I think these are caused by
notifications using potentially stale DocCollection states, rather than the the
latest state available. I'm beasting tests locally now, and will commit the
fix to master shortly and see if it actually works.
> ZkStateReaderTest failure
> -------------------------
>
> Key: SOLR-9181
> URL: https://issues.apache.org/jira/browse/SOLR-9181
> Project: Solr
> Issue Type: Bug
> Reporter: Alan Woodward
> Assignee: Alan Woodward
> Fix For: 6.2, master (7.0)
>
> Attachments: SOLR-9181.patch, SOLR-9181.patch, SOLR-9181.patch,
> SOLR-9181.patch
>
>
> https://builds.apache.org/job/Lucene-Solr-Tests-6.x/243/
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