[jira] [Comment Edited] (KAFKA-5470) Replace -XX:+DisableExplicitGC with -XX:+ExplicitGCInvokesConcurrent in kafka-run-class

["Hongyuan Li (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KAFKA-5470?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16054216#comment-16054216 ] 

Hongyuan Li edited comment on KAFKA-5470 at 6/19/17 3:32 PM:
-------------------------------------------------------------

LGTM. That decreases the rate of invoking oom.  
Thanks, [~ijuma].


was (Author: hongyuan li):
LGTM. That decreases the rate of invoking oom.  
Thanks, Ismael Juma.

> Replace -XX:+DisableExplicitGC with -XX:+ExplicitGCInvokesConcurrent in kafka-run-class
> ---------------------------------------------------------------------------------------
>
>                 Key: KAFKA-5470
>                 URL: https://issues.apache.org/jira/browse/KAFKA-5470
>             Project: Kafka
>          Issue Type: Improvement
>            Reporter: Ismael Juma
>            Assignee: Ismael Juma
>            Priority: Critical
>             Fix For: 0.11.0.1
>
>
> This is important because Bits.reserveMemory calls System.gc() hoping to free native memory in order to avoid throwing an OutOfMemoryException. This call is currently a no-op due to -XX:+DisableExplicitGC.
> It's worth mentioning that -XX:MaxDirectMemorySize can be used to increase the amount of native memory available for allocation of direct byte buffers.
> Hongyuan Li pointed out the issue with the usage of -XX:+DisableExplicitGC in: https://issues.apache.org/jira/browse/KAFKA-5444?focusedCommentId=16054129&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-16054129



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