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https://issues.apache.org/jira/browse/BOOKKEEPER-563?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13679517#comment-13679517
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Ivan Kelly commented on BOOKKEEPER-563:
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Also, you could use sun.misc.SharedSecrets.getJavaIOFileDescriptorAccess rather
than custom code.
> Avoid Journal polluting page cache
> ----------------------------------
>
> Key: BOOKKEEPER-563
> URL: https://issues.apache.org/jira/browse/BOOKKEEPER-563
> Project: Bookkeeper
> Issue Type: Improvement
> Reporter: Sijie Guo
> Assignee: Robin Dhamankar
> Fix For: 4.3.0
>
> Attachments: BOOKKEEPER-563.diff
>
>
> writing data into journal which force the data in os buffer cache being used
> for hot reads, which could have negative affect on performance.
> similar solution is as CASSANDRA-1470.
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