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https://issues.apache.org/jira/browse/KAFKA-10526?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17222246#comment-17222246
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Sagar Rao commented on KAFKA-10526:
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Sure thank you [~hachikuji]!, i have assigned this one and the other 2 to
myself. I will go through the code
> Explore performance impact of leader fsync deferral
> ---------------------------------------------------
>
> Key: KAFKA-10526
> URL: https://issues.apache.org/jira/browse/KAFKA-10526
> Project: Kafka
> Issue Type: Sub-task
> Reporter: Jason Gustafson
> Priority: Major
>
> In order to commit a write, a majority of nodes must call fsync in order to
> ensure the data has been written to disk. An interesting optimization option
> to consider is letting the leader defer fsync until the high watermark is
> ready to be advanced. This potentially allows us to reduce the number of
> flushes on the leader.
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