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

["Andrew Sherman (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IMPALA-8143?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Sherman resolved IMPALA-8143.
------------------------------------
       Resolution: Fixed
    Fix Version/s: Impala 3.3.0

> 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
>            Priority: Major
>             Fix For: Impala 3.3.0
>
>
> 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.
>  * Do we want exponential backoff? How can we test this?
>  * how long should the sleep be for existing clients?
>  * Make QueryState::ReportExecStatus() use DoRpcWithRetry()
>  * Consider if asynchronous code like that in KrpcDataStreamSender::Channel  can also use DoRpcWithRetry()
>  * Replace FAULT_INJECTION_RPC_DELAY with DebugAction 



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