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https://issues.apache.org/jira/browse/SPARK-37017?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17429161#comment-17429161
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Zhixiong Chen commented on SPARK-37017:
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I have created a pull request for this issue:
[https://github.com/apache/spark/pull/34292]
> Reduce the scope of synchronized to prevent deadlock.
> -----------------------------------------------------
>
> Key: SPARK-37017
> URL: https://issues.apache.org/jira/browse/SPARK-37017
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.1.1
> Reporter: Zhixiong Chen
> Priority: Minor
>
> There is a synchronized in CatalogManager.currentNamespace function.
> Sometimes a deadlock occurs.
> The scope of synchronized can be reduced to prevent deadlock.
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