Use fadvise in local read path
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Key: HDFS-3228
URL: https://issues.apache.org/jira/browse/HDFS-3228
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: Henry Robinson
Assignee: Henry Robinson
Fix For: 3.0.0
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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