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https://issues.apache.org/jira/browse/KAFKA-2049?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15060623#comment-15060623
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Gwen Shapira commented on KAFKA-2049:
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It is embarrassing, since I created this ticket, but I can't remember why I
thought we need it.
Java has a GC log that is enabled for Kafka by default...
> Add thread that detects JVM pauses
> ----------------------------------
>
> Key: KAFKA-2049
> URL: https://issues.apache.org/jira/browse/KAFKA-2049
> Project: Kafka
> Issue Type: Improvement
> Reporter: Gwen Shapira
> Assignee: Gwen Shapira
>
> Long JVM pauses can cause Kafka malfunctions (especially when interacting
> with ZK) that can be challenging to debug.
> I propose implementing HADOOP-9618 in Kafka:
> Add a simple thread which loops on 1-second sleeps, and if the sleep ever
> takes significantly longer than 1 second, log a WARN. This will make GC
> pauses (and other pauses) obvious in logs.
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