Add HDFS support for fadvise readahead and drop-behind
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Key: HDFS-2465
URL: https://issues.apache.org/jira/browse/HDFS-2465
Project: Hadoop HDFS
Issue Type: Improvement
Components: data-node
Affects Versions: 0.23.0
Reporter: Todd Lipcon
Assignee: Todd Lipcon
This is the HDFS side of HADOOP-7714. The initial implementation is heuristic
based and should be considered experimental, as discussed in the parent JIRA.
It should be off by default until better heuristics, APIs, and tuning
experience is developed.
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