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Posted to common-dev@hadoop.apache.org by "Ming Ma (JIRA)" <ji...@apache.org> on 2014/05/13 06:01:16 UTC

[jira] [Created] (HADOOP-10597) Evaluate if we can have RPC client back off when server is under heavy load

Ming Ma created HADOOP-10597:
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             Summary: Evaluate if we can have RPC client back off when server is under heavy load
                 Key: HADOOP-10597
                 URL: https://issues.apache.org/jira/browse/HADOOP-10597
             Project: Hadoop Common
          Issue Type: Sub-task
            Reporter: Ming Ma


Currently if an application hits NN too hard, RPC requests be in blocking state, assuming OS connection doesn't run out. Alternatively RPC or NN can throw some well defined exception back to the client based on certain policies when it is under heavy load; client will understand such exception and do exponential back off, as another implementation of RetryInvocationHandler.



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