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https://issues.apache.org/jira/browse/CASSANDRA-20087?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18079807#comment-18079807
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Sam Lightfoot commented on CASSANDRA-20087:
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Great idea - this will be covered as part of
https://issues.apache.org/jira/browse/CASSANDRA-21134 for all background write
ops. I'll leave this Jira open for now and close nearer to PR time of 21134.
> Write streamed data using direct io
> -----------------------------------
>
> Key: CASSANDRA-20087
> URL: https://issues.apache.org/jira/browse/CASSANDRA-20087
> Project: Apache Cassandra
> Issue Type: Improvement
> Reporter: Jon Haddad
> Priority: Normal
>
> When bootstrapping a node, we write sstables through normal filesystem calls.
> There's not much point in doing this, as we generally have way more data
> than memory. If we use direct IO we can avoid pushing data through the page
> cache.
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