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https://issues.apache.org/jira/browse/HDFS-7782?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14394101#comment-14394101
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Jing Zhao commented on HDFS-7782:
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The 006 patch looks good to me overall.
One issue I missed in the previous review is that the parameter {{start}} in
{{fetchBlockByteRange}} and {{getFromOneDataNode}} should be the starting
offset of that block, instead of file. Thus the corresponding calculation in
both 005 and 006 patch need to be updated accordingly.
> Erasure coding: pread from files in striped layout
> --------------------------------------------------
>
> 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,
> HDFS-7782-002.patch, HDFS-7782-003.patch, HDFS-7782-004.patch,
> HDFS-7782-005.patch, HDFS-7782-006.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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