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Posted to issues@spark.apache.org by "Sean R. Owen (Jira)" <ji...@apache.org> on 2020/07/10 18:34:00 UTC
[jira] [Resolved] (SPARK-31592) bufferPoolsBySize in
HeapMemoryAllocator should be thread safe
[ https://issues.apache.org/jira/browse/SPARK-31592?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sean R. Owen resolved SPARK-31592.
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Resolution: Cannot Reproduce
> bufferPoolsBySize in HeapMemoryAllocator should be thread safe
> --------------------------------------------------------------
>
> Key: SPARK-31592
> URL: https://issues.apache.org/jira/browse/SPARK-31592
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 2.4.3
> Reporter: Yunbo Fan
> Priority: Major
>
> Currently, bufferPoolsBySize in HeapMemoryAllocator uses a Map type whose value type is LinkedList.
> LinkedList is not thread safe and may hit the error below
> {code:java}
> java.util.NoSuchElementExceptionException
> at java.util.LinkedList.removeFirst(LinkedList.java:270)
> at java.util.LinkedList.remove(LinkedList.java:685)
> at org.apache.spark.unsafe.memory.HeapMemoryAllocator.allocate(HeapMemoryAllocator.java:57){code}
>
>
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