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https://issues.apache.org/jira/browse/HBASE-12071?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14154050#comment-14154050
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Andrew Purtell commented on HBASE-12071:
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Regarding HBASE-12028, I'd say we should abort the RS if a handler thread
terminates due to an unhandled throwable, and if so we wouldn't need this.
However
bq. This addresses [...] but also long-running queries or co-processor
executions holding up master operations.
True.
> Separate out thread pool for Master <-> RegionServer communication
> ------------------------------------------------------------------
>
> Key: HBASE-12071
> URL: https://issues.apache.org/jira/browse/HBASE-12071
> Project: HBase
> Issue Type: Bug
> Reporter: Sudarshan Kadambi
>
> Over in HBASE-12028, there is a discussion about the case of a RegionServer
> still being alive despite all its handler threads being dead. One outcome of
> this is that the Master is left hanging on the RS for completion of various
> operations - such as region un-assignment when a table is disabled. Does it
> make sense to create a separate thread pool for communication between the
> Master and the RS? This addresses not just the case of the RPC handler
> threads terminating but also long-running queries or co-processor executions
> holding up master operations.
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