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https://issues.apache.org/jira/browse/SPARK-2539?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14337615#comment-14337615
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Sean Owen commented on SPARK-2539:
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[~sarutak] sounds like something that could at least be logged. Is it still a
live issue or fixed since?
> ConnectionManager should handle Uncaught Exception
> --------------------------------------------------
>
> Key: SPARK-2539
> URL: https://issues.apache.org/jira/browse/SPARK-2539
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Reporter: Kousuke Saruta
>
> ConnectionManager uses ThreadPool and worker threads run on spawned thread in
> ThreadPool.
> In current implementation, some uncaught exception thrown from the thread,
> nobody handle that.
> If the Exception is fatal, it should be handled and executor should exit.
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