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https://issues.apache.org/jira/browse/IMPALA-8712?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16875278#comment-16875278
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Michael Ho edited comment on IMPALA-8712 at 6/28/19 11:00 PM:
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We may be to work around some of the serialization overhead by serializing some
of the immutable Thrift based RPC parameters once and send it as a sidecar.
This should reduce the need to serialize it once per backend.
was (Author: kwho):
We may be to work around some of the serialization overhead by sending some of
the currently Thrift based RPC parameters as a sidecar or something.
> Convert ExecQueryFInstance() RPC to become asynchronous
> -------------------------------------------------------
>
> Key: IMPALA-8712
> URL: https://issues.apache.org/jira/browse/IMPALA-8712
> Project: IMPALA
> Issue Type: Sub-task
> Components: Distributed Exec
> Affects Versions: Impala 3.3.0
> Reporter: Michael Ho
> Assignee: Thomas Tauber-Marshall
> Priority: Major
>
> Now that IMPALA-7467 is fixed, ExecQueryFInstance() can utilize the async RPC
> capabilities of KRPC instead of relying on the half-baked way of using
> {{ExecEnv::exec_rpc_thread_pool_}} to start query fragment instances. We
> already have a reactor thread pool in KRPC to handle sending client RPCs
> asynchronously. Also various tasks under IMPALA-5486 can also benefit from
> making ExecQueryFInstance() asynchronous so the RPCs can be cancelled.
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