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Posted to issues-all@impala.apache.org by "Andrew Sherman (JIRA)" <ji...@apache.org> on 2019/01/30 00:50:00 UTC

[jira] [Created] (IMPALA-8143) Add features to DoRpcWithRetry()

Andrew Sherman created IMPALA-8143:
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             Summary: Add features to DoRpcWithRetry()
                 Key: IMPALA-8143
                 URL: https://issues.apache.org/jira/browse/IMPALA-8143
             Project: IMPALA
          Issue Type: Task
            Reporter: Andrew Sherman
            Assignee: Andrew Sherman


DoRpcWithRetry() is a templated utility function that is currently in control-service.h that is used to retry synchronous Krpc calls. It makes a call to a Krpc function that is is passed as a lambda function. It sets the krpc timeout to the ‘krpc_timeout‘ parameter and calls the Krpc function a number of times controlled by the ‘times_to_try’ parameter.

Possible improvements:
 * Move code to rpc-mgr.inline.h
 * Add a configurable sleep if RpcMgr::IsServerTooBusy() says the remote server’s queue is full.
 * Make QueryState::ReportExecStatus() use DoRpcWithRetry()
 * Consider if asynchronous code like that in KrpcDataStreamSender::Channel  can also use DoRpcWithRetry()



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