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https://issues.apache.org/jira/browse/HDFS-4256?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13508339#comment-13508339
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Harsh J commented on HDFS-4256:
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bq. This work was done three years ago!
I didn't call out on this (stability aspect?). Unsure why you're exclaiming it,
thats all :)
bq. On the contrary, not porting small improvements to stable releases…
We have a release out there we aren't yet encouraging adoption upon, which has
all this in it already.
In any case, are we also intending to do the DistCp optimizations that can
benefit from this, i.e. MAPREDUCE-2117 and MAPREDUCE-2557, so that there's also
an internal use of this, out of the box? :)
> Support for concatenation of files into a single file in branch-1
> -----------------------------------------------------------------
>
> Key: HDFS-4256
> URL: https://issues.apache.org/jira/browse/HDFS-4256
> Project: Hadoop HDFS
> Issue Type: Test
> Components: namenode
> Affects Versions: 1.2.0
> Reporter: Suresh Srinivas
> Assignee: Suresh Srinivas
>
> HDFS-222 added support concatenation of multiple files in a directory into a
> single file. This helps several use cases where writes can be parallelized
> and several folks have expressed in this functionality.
> This jira intends to make changes equivalent from HDFS-222 into branch-1 to
> be made available release 1.2.0.
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