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Posted to issues@spark.apache.org by "Apache Spark (Jira)" <ji...@apache.org> on 2020/08/30 04:34:00 UTC
[jira] [Commented] (SPARK-32738) thread safe endpoints may hang due
to fatal exception
[ https://issues.apache.org/jira/browse/SPARK-32738?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17187136#comment-17187136 ]
Apache Spark commented on SPARK-32738:
--------------------------------------
User 'wzhfy' has created a pull request for this issue:
https://github.com/apache/spark/pull/29580
> thread safe endpoints may hang due to fatal exception
> -----------------------------------------------------
>
> Key: SPARK-32738
> URL: https://issues.apache.org/jira/browse/SPARK-32738
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 2.3.4, 2.4.6, 3.0.0
> Reporter: Zhenhua Wang
> Priority: Major
>
> Processing for `ThreadSafeRpcEndpoint` is controlled by 'numActiveThreads' in `Inbox`. Now if any fatal exception happens during `Inbox.process`, 'numActiveThreads' is not reduced. Then other threads can not process messages in that inbox, which causes the endpoint to hang.
> This problem is more serious in previous Spark 2.x versions since the driver, executor and block manager endpoints are all thread safe endpoints.
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