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https://issues.apache.org/jira/browse/HDFS-3228?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Todd Lipcon updated HDFS-3228:
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Comment: was deleted
(was: These messages refer to HDFS-3428, not this issue. Looks like a typo in
the commit msg. )
> Use fadvise in local read path
> ------------------------------
>
> Key: HDFS-3228
> URL: https://issues.apache.org/jira/browse/HDFS-3228
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: hdfs client, performance
> Reporter: Henry Robinson
> Assignee: Henry Robinson
>
> The read path through BlockReaderLocal does not take advantage of readahead
> or drop-behind in the way that BlockSender does. We could arguably stand to
> gain even more from hinting about read patterns to the kernel here, so we
> should add the same mechanisms to BlockReaderLocal.
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