Manukranth Kolloju created HBASE-12075:
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Summary: Preemptive Fast Fail
Key: HBASE-12075
URL: https://issues.apache.org/jira/browse/HBASE-12075
Project: HBase
Issue Type: New Feature
Components: Client
Affects Versions: 1.0.0
Reporter: Manukranth Kolloju
Assignee: Manukranth Kolloju
Fix For: 1.0.0
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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