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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-2235) Local Flink cluster allocates too much memory
Date Wed, 08 Jul 2015 13:54:04 GMT

    [ https://issues.apache.org/jira/browse/FLINK-2235?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14618618#comment-14618618

ASF GitHub Bot commented on FLINK-2235:

Github user StephanEwen commented on the pull request:

    Is this value actually accurate? It assumes that the JVM can grow to occupy the entire
available main memory.
    Is that the case?

> Local Flink cluster allocates too much memory
> ---------------------------------------------
>                 Key: FLINK-2235
>                 URL: https://issues.apache.org/jira/browse/FLINK-2235
>             Project: Flink
>          Issue Type: Bug
>          Components: Local Runtime, TaskManager
>    Affects Versions: 0.9
>         Environment: Oracle JDK: 1.6.0_65-b14-462
> Eclipse
>            Reporter: Maximilian Michels
>            Priority: Minor
> When executing a Flink job locally, the task manager gets initialized with an insane
amount of memory. After a quick look in the code it seems that the call to {{EnvironmentInformation.getSizeOfFreeHeapMemoryWithDefrag()}}
returns a wrong estimate of the heap memory size.
> Moreover, the same user switched to Oracle JDK 1.8 and that made the error disappear.
So I'm guessing this is some Java 1.6 quirk.

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