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https://issues.apache.org/jira/browse/HDFS-6581?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14179915#comment-14179915
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Hudson commented on HDFS-6581:
------------------------------
FAILURE: Integrated in Hadoop-Hdfs-trunk #1909 (See
[https://builds.apache.org/job/Hadoop-Hdfs-trunk/1909/])
Updated CHANGES.txt for HDFS-6581 merge into branch-2.6. (jitendra: rev
b85919feef64ed8b05b84ab8c372844a815cc139)
* hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
> Write to single replica in memory
> ---------------------------------
>
> Key: HDFS-6581
> URL: https://issues.apache.org/jira/browse/HDFS-6581
> Project: Hadoop HDFS
> Issue Type: New Feature
> Components: datanode, hdfs-client, namenode
> Reporter: Arpit Agarwal
> Assignee: Arpit Agarwal
> Fix For: 2.6.0
>
> Attachments: HDFS-6581.merge.01.patch, HDFS-6581.merge.02.patch,
> HDFS-6581.merge.03.patch, HDFS-6581.merge.04.patch, HDFS-6581.merge.05.patch,
> HDFS-6581.merge.06.patch, HDFS-6581.merge.07.patch, HDFS-6581.merge.08.patch,
> HDFS-6581.merge.09.patch, HDFS-6581.merge.10.patch, HDFS-6581.merge.11.patch,
> HDFS-6581.merge.12.patch, HDFS-6581.merge.14.patch, HDFS-6581.merge.15.patch,
> HDFSWriteableReplicasInMemory.pdf,
> Test-Plan-for-HDFS-6581-Memory-Storage.pdf,
> Test-Plan-for-HDFS-6581-Memory-Storage.pdf
>
>
> Per discussion with the community on HDFS-5851, we will implement writing to
> a single replica in DN memory via DataTransferProtocol.
> This avoids some of the issues with short-circuit writes, which we can
> revisit at a later time.
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