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https://issues.apache.org/jira/browse/SPARK-43300?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Josh Rosen reassigned SPARK-43300:
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Assignee: Ziqi Liu
> Cascade failure in Guava cache due to fate-sharing
> --------------------------------------------------
>
> Key: SPARK-43300
> URL: https://issues.apache.org/jira/browse/SPARK-43300
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 3.4.0
> Reporter: Ziqi Liu
> Assignee: Ziqi Liu
> Priority: Major
>
> Guava cache is widely used in spark, however, it suffers from fate-sharing
> behavior: If there are multiple requests trying to access the same key in the
> {{cache}} at the same time when the key is not in the cache, Guava cache will
> block all requests and create the object only once. If the creation fails,
> all requests will fail immediately without retry. So we might see task
> failure due to irrelevant failure in other queries due to fate sharing.
> This fate sharing behavior might lead to unexpected results in some situation.
> We can wrap around Guava cache with a KeyLock to synchronize all requests
> with the same key, so they will run individually and fail as if they come one
> at a time.
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