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https://issues.apache.org/jira/browse/HDFS-4595?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13600628#comment-13600628
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Colin Patrick McCabe commented on HDFS-4595:
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looks good to me, though I did not test it.
> When short circuit read is disallowed, DFSClient does disable short circuit
> and fall back to regular reads
> ----------------------------------------------------------------------------------------------------------
>
> Key: HDFS-4595
> URL: https://issues.apache.org/jira/browse/HDFS-4595
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs-client
> Affects Versions: 2.0.0-alpha
> Reporter: Suresh Srinivas
> Assignee: Suresh Srinivas
> Attachments: HDFS-4595.patch, HDFS-4595.patch, HDFS-4595.patch
>
>
> In 1.0, when short circuit is disallowed for a user, the DFSClient disables
> short circuit and falls back to the regular socket based reads over
> DataTransferProtocol. In release 2.0, this fallback functionality is not
> working.
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