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https://issues.apache.org/jira/browse/KAFKA-4918?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gwen Shapira resolved KAFKA-4918.
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Resolution: Not A Problem
> Continuous fetch requests for offset storage topic in kafka connect
> -------------------------------------------------------------------
>
> Key: KAFKA-4918
> URL: https://issues.apache.org/jira/browse/KAFKA-4918
> Project: Kafka
> Issue Type: Improvement
> Components: KafkaConnect
> Affects Versions: 0.10.1.0, 0.10.1.1, 0.10.2.0
> Environment: unix, osx
> Reporter: Liju
> Labels: enhancement, performance
>
> The kafka consumer in the KafkaOffsetBackingStore polls continuously with
> timeout hardcoded as 0 ms , this leads to high fetch request load to kafka
> server , and specifically for the sink connectors ( eg. kafka-connect-hdfs)
> which doesn't uses the offset storage topic for offset tracking , this
> becomes redundant and it continuously sends fetch request as there is no data
> in this topic
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