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From "Todd Lipcon (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-3228) Use fadvise in local read path
Date Fri, 06 Apr 2012 23:52:17 GMT

     [ https://issues.apache.org/jira/browse/HDFS-3228?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Todd Lipcon updated HDFS-3228:

         Component/s: performance
                      hdfs client
    Target Version/s: 3.0.0
       Fix Version/s:     (was: 3.0.0)
> 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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