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From "Sanjay Radia (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2246) Shortcut a local client reads to a Datanodes files directly
Date Thu, 29 Sep 2011 22:39:46 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2246?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13117685#comment-13117685
] 

Sanjay Radia commented on HDFS-2246:
------------------------------------

@milind ...  we might [incorrectly] qualify a read for short circuit, on a multi container
system ..

In a multi-container environment such as  linux containers or solaris zones, you are likely
to give different IP addresses to each of the containers. Hence the problem you describe will
not occur. Further, you would run HBase and DN within the same container or give each the
same IP. I don't think linux container allow the sharing of IPs across containers. 
                
> 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-2246.20s.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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