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From "Ismael Juma (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (KAFKA-5470) Replace -XX:+DisableExplicitGC with -XX:+ExplicitGCInvokesConcurrent in kafka-run-class
Date Tue, 18 Jul 2017 12:18:00 GMT

     [ https://issues.apache.org/jira/browse/KAFKA-5470?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Ismael Juma updated KAFKA-5470:
    Fix Version/s:     (was:

> 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:
> 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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