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https://issues.apache.org/jira/browse/HDFS-7729?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14303066#comment-14303066
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Li Bo commented on HDFS-7729:
-----------------------------
Because HDFS-7417 and HDFS-7418 are still in progress, so I upload this
patch(Codec-tmp.patch) so that we can run our unit test. This patch adds 5
files, 4 (from HDFS-RAID) will be added to package org.apache.hadoop.raid, 1
(CodecHelper.java) will be added to org.apache.hadoop.hdfs.ec. These 5 files
have no dependency to other files. All codec operations are wrapped in
CodecHelper.java. Code using CodecHelper will not be influenced if it is
submitted because all changes to Codec operations are confined to class
CodecHelper.
> Add logic to DFSOutputStream to support writing a file in striping layout
> --------------------------------------------------------------------------
>
> Key: HDFS-7729
> URL: https://issues.apache.org/jira/browse/HDFS-7729
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Li Bo
> Assignee: Li Bo
> Attachments: Codec-tmp.patch
>
>
> If client wants to directly write a file striping layout, we need to add some
> logic to DFSOutputStream. DFSOutputStream needs multiple DataStreamers to
> write each cell of a stripe to a remote datanode.
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