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https://issues.apache.org/jira/browse/HDFS-6581?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14156513#comment-14156513
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Hudson commented on HDFS-6581:
------------------------------
FAILURE: Integrated in Hadoop-Mapreduce-trunk #1914 (See
[https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1914/])
HDFS-6950. Add Additional unit tests for HDFS-6581. (Contributed by Xiaoyu Yao)
(arp: rev 762b04e9943d6a05e1130fc81ada5b5dc8baab2c)
* hadoop-hdfs-project/hadoop-hdfs/CHANGES-HDFS-6581.txt
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/TestLazyPersistFiles.java
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/DFSTestUtil.java
HDFS-7064. Fix unit test failures in HDFS-6581 branch. (Contributed by Xiaoyu
Yao) (arp: rev 4603e4481f0486afcce6b106d4a92a6e90e5b6d9)
*
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/shell/CommandWithDestination.java
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsVolumeImpl.java
* hadoop-hdfs-project/hadoop-hdfs/CHANGES-HDFS-6581.txt
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDataDirs.java
HDFS-7079. Few more unit test fixes for HDFS-6581. (Arpit Agarwal) (arp: rev
dcbc46730131a1bdf8416efeb4571794e5c8e369)
*
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/shell/CommandWithDestination.java
* hadoop-hdfs-project/hadoop-hdfs/CHANGES-HDFS-6581.txt
HDFS-7143. Fix findbugs warnings in HDFS-6581 branch. (Contributed by Tsz Wo
Nicholas Sze) (arp: rev feda4733a8279485fc0ff1271f9c22bc44f333f6)
* hadoop-hdfs-project/hadoop-hdfs/CHANGES-HDFS-6581.txt
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/BlockPoolSlice.java
HDFS-7171. Fix Jenkins failures in HDFS-6581 branch. (Arpit Agarwal) (arp: rev
a45ad330facc56f06ed42eb71304c49ef56dc549)
* hadoop-hdfs-project/hadoop-hdfs/CHANGES-HDFS-6581.txt
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/mover/TestStorageMover.java
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestBlockStoragePolicy.java
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
HDFS-6581. Update CHANGES.txt in preparation for trunk merge (arp: rev
04b08431a3446300f4715cf135f0e60f85e5bf5a)
* hadoop-hdfs-project/hadoop-hdfs/CHANGES-HDFS-6581.txt
* 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: 3.0.0
>
> 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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