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From "Sean Owen (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (SPARK-18784) Managed memory leak - spark-2.0.2
Date Thu, 08 Dec 2016 14:48:58 GMT

     [ https://issues.apache.org/jira/browse/SPARK-18784?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sean Owen resolved SPARK-18784.
-------------------------------
    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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