[jira] [Commented] (HDFS-4453) Make a simple doc to describe the usage and design of the shortcircuit read feature

["Colin Patrick McCabe (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HDFS-4453?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13566746#comment-13566746 ] 

Colin Patrick McCabe commented on HDFS-4453:
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note: for a design document, please see HDFS-347
                
> Make a simple doc to describe the usage and design of the shortcircuit read feature
> -----------------------------------------------------------------------------------
>
>                 Key: HDFS-4453
>                 URL: https://issues.apache.org/jira/browse/HDFS-4453
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: datanode, hdfs-client
>            Reporter: Brandon Li
>            Assignee: Colin Patrick McCabe
>         Attachments: HDFS-4453.001.patch
>
>
> It would be nice to have a document to describe the configuration and design of this feature. Also its relationship with previous short circuit read implementation(HDFS-2246), for example, can they co-exist, or this one is planed to replaces HDFS-2246, or it can fall back on HDFS-2246 when unix domain socket is not supported.

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