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https://issues.apache.org/jira/browse/SPARK-39283?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-39283:
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Assignee: Apache Spark
> Spark tasks stuck forever due to deadlock between TaskMemoryManager and
> UnsafeExternalSorter
> --------------------------------------------------------------------------------------------
>
> Key: SPARK-39283
> URL: https://issues.apache.org/jira/browse/SPARK-39283
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 3.1.2
> Reporter: Sandeep Pal
> Assignee: Apache Spark
> Priority: Critical
> Labels: Deadlock, spark3.0
> Attachments: DeadlockSparkTasks.png
>
>
> We are seems this deadlock between {{TaskMemoryManager}} and
> {{UnsafeExternalSorter}} pretty often on our workload. Sometime, the retry is
> successful but sometimes we have to do hacky ways to break the deadlocks such
> as turning down the worker machines explicitly.
> Below is the thread dump from the Spark UI showing the deadlock :
> !DeadlockSparkTasks.png!
>
> I believe there was a related Jira on the similar deadlock between the same
> threads and it was resolved.
> https://issues.apache.org/jira/browse/SPARK-27338
>
>
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