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https://issues.apache.org/jira/browse/HADOOP-10610?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14066341#comment-14066341
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Hudson commented on HADOOP-10610:
---------------------------------
FAILURE: Integrated in Hadoop-Mapreduce-trunk #1835 (See
[https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1835/])
HADOOP-10610. Upgrade S3n s3.fs.buffer.dir to support multi directories.
Contributed by Ted Malaska. (atm:
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1611489)
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/s3native/NativeS3FileSystem.java
> Upgrade S3n s3.fs.buffer.dir to support multi directories
> ---------------------------------------------------------
>
> Key: HADOOP-10610
> URL: https://issues.apache.org/jira/browse/HADOOP-10610
> Project: Hadoop Common
> Issue Type: Improvement
> Components: fs/s3
> Affects Versions: 2.4.0
> Reporter: Ted Malaska
> Assignee: Ted Malaska
> Priority: Minor
> Fix For: 2.6.0
>
> Attachments: HADOOP-10610.patch, HADOOP_10610-2.patch, HDFS-6383.patch
>
>
> s3.fs.buffer.dir defines the tmp folder where files will be written to before
> getting sent to S3. Right now this is limited to a single folder which
> causes to major issues.
> 1. You need a drive with enough space to store all the tmp files at once
> 2. You are limited to the IO speeds of a single drive
> This solution will resolve both and has been tested to increase the S3 write
> speed by 2.5x with 10 mappers on hs1.
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