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https://issues.apache.org/jira/browse/CASSANDRA-3878?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Ellis resolved CASSANDRA-3878.
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Resolution: Duplicate
We're ripping out fadvise from compaction reads (CASSANDRA-4937), so that would
seem to take care of that.
> Allow posix_fadvise call to be skipped based on a configuration option
> ----------------------------------------------------------------------
>
> Key: CASSANDRA-3878
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3878
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Rick Branson
> Assignee: Rick Branson
> Labels: datastax_qa
>
> It is sometimes desirable to skip the posix_fadvise() call performed on
> SSTable files when Cassandra has JNA enabled, without disabling JNA as other
> functionality is dependent on JNA such as the off-heap row cache. This can be
> either for performance reasons, or to avoid bugs caused by faulty
> interactions of the fadvise call with the underlying hardware and it's
> drivers.
> The enhancement is to be able to disable the fadvise() call using an option
> in the cassandra.yaml file.
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