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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. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira