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https://issues.apache.org/jira/browse/SPARK-27916?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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angerszhu resolved SPARK-27916.
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Resolution: Invalid
> SparkThreatServer memory leak when
> 'spark.sql.hive.thriftServer.singleSession' enabled
> --------------------------------------------------------------------------------------
>
> Key: SPARK-27916
> URL: https://issues.apache.org/jira/browse/SPARK-27916
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.3.0, 2.4.0
> Reporter: angerszhu
> Priority: Major
>
> When we use SparkThriftServer, when set config
> spark.sql.hive.thriftServer.singleSession = true
> Each client session will create a SparkSession Object, but this
> InheritThreadLocal Object will not be released since when we call
> SparkSession.sql(), It just call ThreadLocal's set method. This make
> SparkSession Object remained in JVM, not cleared
>
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