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https://issues.apache.org/jira/browse/SPARK-3503?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Reynold Xin resolved SPARK-3503.
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Resolution: Fixed
Fix Version/s: 1.2.0
> Disable thread local cache in PooledByteBufAllocator
> ----------------------------------------------------
>
> Key: SPARK-3503
> URL: https://issues.apache.org/jira/browse/SPARK-3503
> Project: Spark
> Issue Type: Sub-task
> Components: Shuffle
> Reporter: Reynold Xin
> Assignee: Reynold Xin
> Fix For: 1.2.0
>
>
> Feedback from Norman.
> Thread-local caches should be disabled because the ByteBufs are allocated by
> the event loop thread, but released by the executor thread rather than the
> event loop thread. Those thread-local caches actually delay the recycling of
> buffers, leading to larger memory usage.
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