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https://issues.apache.org/jira/browse/KAFKA-936?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13681299#comment-13681299
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Jun Rao commented on KAFKA-936:
-------------------------------
Normally, rebalances are rare. The common cause of too many rebalances is GC
(see #6 in http://kafka.apache.org/faq.html for details). Not sure if the
memory leak issue you reported is related to too many rebalances. Nevertheless,
you should try to tune the GC to minimize rebalances.
> Kafka Metrics Memory Leak
> --------------------------
>
> Key: KAFKA-936
> URL: https://issues.apache.org/jira/browse/KAFKA-936
> Project: Kafka
> Issue Type: Bug
> Components: consumer
> Affects Versions: 0.8
> Environment: centos linux, jdk 1.6, jboss
> Reporter: Senthil Chittibabu
> Assignee: Neha Narkhede
> Priority: Critical
>
> I am using kafka_2.8.0-0.8.0-SNAPSHOT version. I am running into
> OutOfMemoryError in PermGen Space. I have set the -XX:MaxPermSize=512m, but I
> still get the same error. I used profiler to trace the memory leak, and found
> the following kafka classes to be the cause for the memory leak. Please let
> me know if you need any additional information to debug this issue.
> kafka.server.FetcherLagMetrics
> kafka.consumer.FetchRequestAndResponseMetrics
> kafka.consumer.FetchRequestAndResponseStats
> kafka.metrics.KafkaTimer
> kafka.utils.Pool
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