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https://issues.apache.org/jira/browse/SPARK-39636?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Josh Rosen resolved SPARK-39636.
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Fix Version/s: 3.4.0
Resolution: Fixed
Issue resolved by pull request 37027
[https://github.com/apache/spark/pull/37027]
> Fix multiple small bugs in JsonProtocol, impacting StorageLevel and
> Task/Executor resource requests
> ---------------------------------------------------------------------------------------------------
>
> Key: SPARK-39636
> URL: https://issues.apache.org/jira/browse/SPARK-39636
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core, Web UI
> Affects Versions: 1.0.0
> Reporter: Josh Rosen
> Assignee: Josh Rosen
> Priority: Major
> Fix For: 3.4.0
>
>
> While working on SPARK-39489, I spotted three pre-existing bugs in
> JsonProtocol:
> * {{TaskResourceRequest}} loses precision for values < 0.5. The {{amount}}
> is a floating point number which is either between 0 and 0.5 or is a positive
> integer, but the read path assumes it is an integer.
> * {{ExecutorResourceRequest}} integer overflows for values larger than an
> integer because the write path writes longs but the read path assumes
> integers.
> * The {{OFF_HEAP}} storage level is not handled properly: the {{offHeap}}
> field isn't included in the JSON, so this StorageLevel cannot be
> round-tripped through JSON. This could cause the History Server to display
> inaccurate "off heap memory used" stats on the executors page.
> I'm submitting a separate PR to fix those issues.
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