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https://issues.apache.org/jira/browse/HDFS-6246?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13980928#comment-13980928
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Hudson commented on HDFS-6246:
------------------------------

SUCCESS: Integrated in Hadoop-Yarn-trunk #551 (See 
[https://builds.apache.org/job/Hadoop-Yarn-trunk/551/])
HDFS-6246. Remove 'dfs.support.append' flag from trunk code. Contributed by Uma 
Maheswara Rao G. (umamahesh: 
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1589927)
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* 
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java
* 
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/BlockPoolSlice.java
* 
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
* 
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestFileAppend.java
* 
/hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/fs/TestDFSIO.java


> Remove 'dfs.support.append' flag from trunk code
> ------------------------------------------------
>
>                 Key: HDFS-6246
>                 URL: https://issues.apache.org/jira/browse/HDFS-6246
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Uma Maheswara Rao G
>            Assignee: Uma Maheswara Rao G
>            Priority: Minor
>             Fix For: 3.0.0
>
>         Attachments: HDFS-6246.patch
>
>
> we added "dfs.support.append' flag long ago to control the issues with append 
> feature.  Now in trunk and hadoop-2, by default we enabled and using it for 
> long time.  
> So, I propose to remove that property now as we don't see any issue by 
> enabling the append feature always. 
> Thoughts?



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