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Chris Li commented on HADOOP-10597: ----------------------------------- Ah okay, thanks for clarifying, makes sense now > 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 > Assignee: Ming Ma > Attachments: HADOOP-10597-2.patch, HADOOP-10597.patch, > MoreRPCClientBackoffEvaluation.pdf, RPCClientBackoffDesignAndEvaluation.pdf > > > 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. -- This message was sent by Atlassian JIRA (v6.3.4#6332)