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https://issues.apache.org/jira/browse/HADOOP-14407?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16016644#comment-16016644
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Hudson commented on HADOOP-14407:
---------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #11752 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/11752/])
HADOOP-14407. DistCp - Introduce a configurable copy buffer size. (Omkar
(yzhang: rev b4adc8392c1314d6d6fbdd00f2afb306ef20a650)
* (edit)
hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/mapred/RetriableFileCopyCommand.java
* (edit) hadoop-tools/hadoop-distcp/src/site/markdown/DistCp.md.vm
* (edit)
hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/DistCpConstants.java
* (edit)
hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/DistCpOptionSwitch.java
* (edit)
hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/DistCpContext.java
* (edit)
hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/OptionsParser.java
* (edit)
hadoop-tools/hadoop-distcp/src/test/java/org/apache/hadoop/tools/TestDistCpOptions.java
* (edit)
hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/DistCpOptions.java
> DistCp - Introduce a configurable copy buffer size
> --------------------------------------------------
>
> Key: HADOOP-14407
> URL: https://issues.apache.org/jira/browse/HADOOP-14407
> Project: Hadoop Common
> Issue Type: Improvement
> Components: tools/distcp
> Affects Versions: 2.9.0
> Reporter: Omkar Aradhya K S
> Assignee: Omkar Aradhya K S
> Fix For: 2.9.0, 3.0.0-alpha3
>
> Attachments: HADOOP-14407.001.patch, HADOOP-14407.002.patch,
> HADOOP-14407.002.patch, HADOOP-14407.003.patch, HADOOP-14407.004.patch,
> HADOOP-14407.004.patch, TotalTime-vs-CopyBufferSize.jpg
>
>
> Currently, the RetriableFileCopyCommand has a fixed copy buffer size of just
> 8KB. We have noticed in our performance tests that with bigger buffer sizes
> we saw upto ~3x performance boost. Hence, making the copy buffer size a
> configurable setting via the new parameter <copybuffersize>.
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