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https://issues.apache.org/jira/browse/HDFS-7782?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14351243#comment-14351243
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Zhe Zhang commented on HDFS-7782:
---------------------------------

I realized that the current {{DFSInputStream}} non-positional read gets at most 
64K at a time. Given that our striping cell size is 1M by default and is not 
likely to be configured < 64KB. It doesn't make much sense to maintain multiple 
blockReaders. 

> Read a striping layout file from client side
> --------------------------------------------
>
>                 Key: HDFS-7782
>                 URL: https://issues.apache.org/jira/browse/HDFS-7782
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Li Bo
>            Assignee: Zhe Zhang
>         Attachments: HDFS-7782-000.patch, HDFS-7782-001.patch
>
>
> If client wants to read a file, he is not necessary to know and handle what 
> layout the file is. This sub task adds logic to DFSInputStream to support 
> reading striping layout files.



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