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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:
------------------------------
Comment: was deleted
(was: Integrated in Hadoop-Mapreduce-trunk-Commit #2373 (See
[https://builds.apache.org/job/Hadoop-Mapreduce-trunk-Commit/2373/])
Amendment to my previous commit, fixing JIRA in CHANGES.txt from HDFS-3228
to HDFS-3428 (Revision 1349556)
Result = FAILURE
tucu : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1349556
Files :
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
)
> 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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