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https://issues.apache.org/jira/browse/DRILL-4766?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15437420#comment-15437420
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Rahul Challapalli commented on DRILL-4766:
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[~sudheeshkatkam] Can you explain how to reproduce this issue without the fix?
> FragmentExecutor should use EventProcessor and avoid blocking rpc threads
> -------------------------------------------------------------------------
>
> Key: DRILL-4766
> URL: https://issues.apache.org/jira/browse/DRILL-4766
> Project: Apache Drill
> Issue Type: Improvement
> Components: Execution - Flow
> Affects Versions: 1.7.0
> Reporter: Deneche A. Hakim
> Assignee: Sudheesh Katkam
> Priority: Minor
> Fix For: 1.8.0
>
>
> Currently, rpc thread can block when trying to deliver a cancel or early
> termination message to a blocked fragment executor.
> Foreman already uses an EventProcessor to avoid such scenarios.
> FragmentExecutor could be improved to avoid blocking rpc threads as well
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