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https://issues.apache.org/jira/browse/FLINK-15966?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17034106#comment-17034106
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zhijiang commented on FLINK-15966:
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Very helpful improvement, looking forward for it.
> Capture the call stack of RPC ask() calls.
> ------------------------------------------
>
> Key: FLINK-15966
> URL: https://issues.apache.org/jira/browse/FLINK-15966
> Project: Flink
> Issue Type: Improvement
> Components: Runtime / Coordination
> Reporter: Stephan Ewen
> Assignee: Stephan Ewen
> Priority: Major
> Fix For: 1.10.1, 1.11.0
>
>
> Currently, when an RPC ask() call fails, we get a rather unhelpful exception
> with a stack trace from akka's internal scheduler.
> Instead, we should capture the call stack during the invocation and use it to
> give a helpful error message when the RPC call failed. This is especially
> helpful in cases where the future (and future handlers) are passed for later
> asynchronous result handling (which is the common case in most components (JM
> / TM / RM).
> The options should have a flag to turn it off, because when having a lot of
> concurrent ask calls (hundreds of thousands, during large deploy phases), it
> may be possible that the captured call.
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