flink-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "ramkrishna.s.vasudevan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-4094) Off heap memory deallocation might not properly work
Date Mon, 20 Jun 2016 10:52:05 GMT

    [ https://issues.apache.org/jira/browse/FLINK-4094?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15339332#comment-15339332

ramkrishna.s.vasudevan commented on FLINK-4094:

So if the direct memory cannot be reused its better onheap buffers are created so that it
is under the disposal of java gc.

> 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
>            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

This message was sent by Atlassian JIRA

View raw message