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https://issues.apache.org/jira/browse/HDFS-2246?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13117685#comment-13117685
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Sanjay Radia commented on HDFS-2246:
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@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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