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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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Component/s: performance
hdfs client
Target Version/s: 3.0.0
Fix Version/s: (was: 3.0.0)
> 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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