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From "William Yu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (KAFKA-3937) Kafka Clients Leak Native Memory For Longer Than Needed With Compressed Messages
Date Tue, 16 Aug 2016 14:44:21 GMT

    [ https://issues.apache.org/jira/browse/KAFKA-3937?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15422828#comment-15422828

William Yu commented on KAFKA-3937:

[~ijuma] Took a stab at making the fix. I made it against the 0.9.0 branch as that is what
my clients and brokers are running as. I tested it in my environment and i saw native memory
was not going above the java -Xmx setting as the streams were being closed when the RecordIterator

> Kafka Clients Leak Native Memory For Longer Than Needed With Compressed Messages
> --------------------------------------------------------------------------------
>                 Key: KAFKA-3937
>                 URL: https://issues.apache.org/jira/browse/KAFKA-3937
>             Project: Kafka
>          Issue Type: Bug
>          Components: clients
>    Affects Versions:,,
>         Environment: Linux, latest oracle java-8
>            Reporter: Tom Crayford
>            Priority: Minor
> In https://issues.apache.org/jira/browse/KAFKA-3933, we discovered that brokers can crash
when performing log recovery, as they leak native memory whilst decompressing compressed segments,
and that native memory isn't cleaned up rapidly enough by garbage collection and finalizers.
The work to fix that in the brokers is taking part in https://github.com/apache/kafka/pull/1598.
As part of that PR, Ismael Juma asked me to fix similar issues in the client. Rather than
have one large PR that fixes everything, I'd rather break this work up into seperate things,
so I'm filing this JIRA to track the followup work. I should get to a PR on this at some point
relatively soon, once the other PR has landed.

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