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https://issues.apache.org/jira/browse/FLINK-4094?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15408925#comment-15408925
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ASF GitHub Bot commented on FLINK-4094:
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GitHub user ramkrish86 opened a pull request:
https://github.com/apache/flink/pull/2336
FLINK-4094 Off heap memory deallocation might not properly work (Ram)
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Just added a log msg warning the user about using OFFHEAP and PREALLOCATION
together. Same comment is added over in the doc also. But not sure if that is
enough or we need more information to be added there. But for a user it may not
be relevant. Any thoughts?
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/ramkrish86/flink FLINK-4094
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/2336.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #2336
----
commit 4e51aaffebeb3ccf530bff9e67c1acd63d90672d
Author: Ramkrishna <ramkrishna.s.vasude...@intel.com>
Date: 2016-08-05T05:55:07Z
FLINK-4094 Off heap memory deallocation might not properly work (Ram)
----
> Off heap memory deallocation might not properly work
> ----------------------------------------------------
>
> Key: FLINK-4094
> URL: https://issues.apache.org/jira/browse/FLINK-4094
> Project: Flink
> Issue Type: Bug
> Components: Local Runtime
> Affects Versions: 1.1.0
> Reporter: Till Rohrmann
> Assignee: ramkrishna.s.vasudevan
> Priority: Critical
> Fix For: 1.1.0
>
>
> A user reported that off-heap memory is not properly deallocated when setting
> {{taskmanager.memory.preallocate:false}} (per default) [1]. This can cause
> the TaskManager process being killed by the OS.
> It should be possible to execute multiple batch jobs with preallocation
> turned off. No longer used direct memory buffers should be properly garbage
> collected so that the JVM process does not exceed it's maximum memory bounds.
> [1]
> http://apache-flink-mailing-list-archive.1008284.n3.nabble.com/offheap-memory-allocation-and-memory-leak-bug-td12154.html
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