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https://issues.apache.org/jira/browse/SPARK-18784?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen resolved SPARK-18784.
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Resolution: Duplicate
It's actually ignorable
> Managed memory leak - spark-2.0.2
> ---------------------------------
>
> Key: SPARK-18784
> URL: https://issues.apache.org/jira/browse/SPARK-18784
> Project: Spark
> Issue Type: Bug
> Affects Versions: 2.0.2
> Environment: spark : 2.0.2
> Reporter: Appu K
>
> I’ve just ran into an issue where the job is giving me "Managed memory leak"
> with spark version 2.0.2
> —————————————————
> 2016-12-08 16:31:25,231 [Executor task launch worker-0]
> (TaskMemoryManager.java:381) WARN leak 46.2 MB memory from
> org.apache.spark.util.collection.ExternalAppendOnlyMap@22719fb8
> 2016-12-08 16:31:25,232 [Executor task launch worker-0] (Logging.scala:66)
> WARN Managed memory leak detected; size = 48442112 bytes, TID = 1
> —————————————————
> The program itself is very basic
> Program: https://gist.github.com/kutt4n/87cfcd4e794b1865b6f880412dd80bbf
> Debug Log: https://gist.github.com/kutt4n/ba3cf8129999dced34ceadc588856edc
> TaskMemoryManager.java:381 says that it's normal to see leaked memory if one
> of the tasks failed. In this case from the debug log - it is not quite
> apparent which task failed and the reason for failure.
> When the TSV file itself is small the issue doesn’t exist. In this particular
> case, the file is a 21MB clickstream data from wikipedia available at
> https://ndownloader.figshare.com/files/5036392
> Not sure if it is a duplicate of 18181 - If so please close this and could
> track it there
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