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https://issues.apache.org/jira/browse/HBASE-12075?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Manukranth Kolloju updated HBASE-12075:
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Attachment: 0001-Implement-Preemptive-Fast-Fail.patch
Added some more standalone unit tests to test the interceptor and documentation
to all the abstract classes describing how it is used. Not sure at this point
how reusable the interceptors are, but this feature would make the code messy
without using such a pattern.
> Preemptive Fast Fail
> --------------------
>
> Key: HBASE-12075
> URL: https://issues.apache.org/jira/browse/HBASE-12075
> Project: HBase
> Issue Type: Sub-task
> Components: Client
> Affects Versions: 1.0.0
> Reporter: Manukranth Kolloju
> Assignee: Manukranth Kolloju
> Fix For: 1.0.0
>
> Attachments: 0001-Add-a-test-case-for-Preemptive-Fast-Fail.patch,
> 0001-Implement-Preemptive-Fast-Fail.patch,
> 0001-Implement-Preemptive-Fast-Fail.patch,
> 0001-Implement-Preemptive-Fast-Fail.patch
>
>
> In multi threaded clients, we use a feature developed on 0.89-fb branch
> called Preemptive Fast Fail. This allows the client threads which would
> potentially fail, fail fast. The idea behind this feature is that we allow,
> among the hundreds of client threads, one thread to try and establish
> connection with the regionserver and if that succeeds, we mark it as a live
> node again. Meanwhile, other threads which are trying to establish connection
> to the same server would ideally go into the timeouts which is effectively
> unfruitful. We can in those cases return appropriate exceptions to those
> clients instead of letting them retry.
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