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https://issues.apache.org/jira/browse/SPARK-26617?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan resolved SPARK-26617.
---------------------------------
Resolution: Fixed
Fix Version/s: 3.0.0
Issue resolved by pull request 23539
[https://github.com/apache/spark/pull/23539]
> CacheManager blocks during requery
> ----------------------------------
>
> Key: SPARK-26617
> URL: https://issues.apache.org/jira/browse/SPARK-26617
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.4.0
> Reporter: Dave DeCaprio
> Assignee: Dave DeCaprio
> Priority: Minor
> Labels: sql
> Fix For: 3.0.0
>
>
> This is related to Spark-26548. The CacheManager also holds locks in
> uncaching and recaching plans that hold the lock while the query optimizer
> runs. If the optimizer takes a long time, then the whole system can block up
> waiting for the optimization run.
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