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https://issues.apache.org/jira/browse/SPARK-13833?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Or resolved SPARK-13833.
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Resolution: Fixed
Fix Version/s: 2.0.0
> Guard against race condition when re-caching spilled bytes in memory
> --------------------------------------------------------------------
>
> Key: SPARK-13833
> URL: https://issues.apache.org/jira/browse/SPARK-13833
> Project: Spark
> Issue Type: Improvement
> Components: Block Manager
> Reporter: Josh Rosen
> Assignee: Apache Spark
> Fix For: 2.0.0
>
>
> When reading data from the DiskStore and attempting to cache it back into the
> memory store, we should guard against race conditions where multiple readers
> are attempting to re-cache the same block in memory.
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