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https://issues.apache.org/jira/browse/HBASE-1913?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dave Latham resolved HBASE-1913.
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Resolution: Duplicate
Resolved by HBASE-3939
> Regionserver accepts connections, doesn't handle them after bad filter request
> ------------------------------------------------------------------------------
>
> Key: HBASE-1913
> URL: https://issues.apache.org/jira/browse/HBASE-1913
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.19.3, 0.20.1
> Environment: Observed on HBase 0.19 HEAD
> Reporter: Dave Latham
>
> I deployed some new regionservers but forgot to include a library that one of
> my filters used. When a client used that filter, the HBaseServer listener
> thread attempted to deserialize it, and threw a NoClassDefFoundError. This
> killed the listener thread without cleaning up the socket (only Exception and
> OOME are caught, not other Error subclasses). New clients continued to
> successfully open TCP connections, but the regionserver would never handle
> them, never shutdown, and the master would never expire it, so all of its
> regions were effectively unavailable until we intervened.
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