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https://issues.apache.org/jira/browse/HDFS-2465?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13137683#comment-13137683
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Todd Lipcon commented on HDFS-2465:
-----------------------------------
looks like the test-patch build ran before HADOOP-7753 was integrated in the
snapshot build. I'll wait half an hour or so and retrigger this test-patch.
Meanwhile, should be good to review.
> Add HDFS support for fadvise readahead and drop-behind
> ------------------------------------------------------
>
> Key: HDFS-2465
> URL: https://issues.apache.org/jira/browse/HDFS-2465
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: data-node, performance
> Affects Versions: 0.23.0
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Attachments: hdfs-2465.txt, hdfs-2465.txt
>
>
> 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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