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https://issues.apache.org/jira/browse/HBASE-6550?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13432340#comment-13432340
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Himanshu Vashishtha commented on HBASE-6550:
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Got it. I like the suggestion of re-using the threadpool for all HTable
instances.
bq.Re:Although I would not think that that would be a common problem once the
timeouts here are short enough.
I think it will be good to have as it makes it more responsive, and also takes
care from master cluster side: in a case when user doesn't configure a lower
rpc timeout (for whatever reasons) at slave cluster.
> Refactoring ReplicationSink to make it more responsive of cluster health
> ------------------------------------------------------------------------
>
> Key: HBASE-6550
> URL: https://issues.apache.org/jira/browse/HBASE-6550
> Project: HBase
> Issue Type: New Feature
> Components: replication
> Reporter: Himanshu Vashishtha
> Assignee: Himanshu Vashishtha
> Attachments: 6550-havealook.txt, HBase-6550-v1.patch
>
>
> ReplicationSink replicates the WALEdits in the local cluster. It uses native
> HBase client to insert the mutations. Sometime, it takes a while to process
> it (may be due to region splitting, gc pause, etc) and it undergoes the
> retrial phase.
> It has two repercussions:
> a) The regionserver handler which is serving the request (till now, a
> priority handler) is blocked for this period.
> b) The caller may get timed out and it will retry it anyway, but the handler
> serving the ReplicationSink requests is still working.
> Refactoring ReplicationSink to have the following features:
> a) Making it more configurable (have its own number of retrial limit,
> connection timeout, etc)
> b) Add a fail fast behavior so that it bails out in case caller is timedout,
> or any exception in processing the mutation batch.
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