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https://issues.apache.org/jira/browse/KAFKA-936?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13680950#comment-13680950
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Jun Rao commented on KAFKA-936:
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This is the heap setting in our MirrorMaker tool.
Xms3g -Xmx3g -XX:+UseConcMarkSweepGC -XX:CMSInitiatingOccupancyFraction=70
BTW, do you see lots of rebalances in your consumer log?
> 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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