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From "Arpit Gupta (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2246) Shortcut a local client reads to a Datanodes files directly
Date Fri, 04 Nov 2011 19:15:51 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2246?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13144259#comment-13144259
] 

Arpit Gupta commented on HDFS-2246:
-----------------------------------

the javadoc for BlockReaderLocal states

The client performing short circuit reads must be running as the same user as that of the
datanode.

Where as the impl states that 'dfs.block.local-path-access.user' needs to set on the dn to
the appropriate user. We should update the javadoc with that info.
                
> Shortcut a local client reads to a Datanodes files directly
> -----------------------------------------------------------
>
>                 Key: HDFS-2246
>                 URL: https://issues.apache.org/jira/browse/HDFS-2246
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Sanjay Radia
>         Attachments: 0001-HDFS-347.-Local-reads.patch, HDFS-2246-branch-0.20-security-205.patch,
HDFS-2246-branch-0.20-security.patch, HDFS-2246.20s.1.patch, HDFS-2246.20s.2.txt, HDFS-2246.20s.3.txt,
HDFS-2246.20s.4.txt, HDFS-2246.20s.patch, localReadShortcut20-security.2patch
>
>


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