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Posted to issues@spark.apache.org by "Vinoo Ganesh (JIRA)" <ji...@apache.org> on 2019/04/10 21:38:00 UTC
[jira] [Commented] (SPARK-27337) QueryExecutionListener never
cleans up listeners from the bus after SparkSession is cleared
[ https://issues.apache.org/jira/browse/SPARK-27337?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16814885#comment-16814885 ]
Vinoo Ganesh commented on SPARK-27337:
--------------------------------------
Clearing the spark session* Updated the ticket title, and there is a thread on the spark dev list about this too
> QueryExecutionListener never cleans up listeners from the bus after SparkSession is cleared
> -------------------------------------------------------------------------------------------
>
> Key: SPARK-27337
> URL: https://issues.apache.org/jira/browse/SPARK-27337
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 3.0.0
> Reporter: Vinoo Ganesh
> Priority: Critical
> Attachments: image001-1.png
>
>
> As a result of [https://github.com/apache/spark/commit/9690eba16efe6d25261934d8b73a221972b684f3], it looks like there is a memory leak (specifically [https://github.com/apache/spark/blob/master/sql/core/src/main/scala/org/apache/spark/sql/util/QueryExecutionListener.scala#L131).]
> Because the Listener Bus on the context still has a reference to the listener (even after the SparkSession is cleared), they are never cleaned up. This means that if you close and remake spark sessions fairly frequently, you're leaking every single time.
>
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