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https://issues.apache.org/jira/browse/HADOOP-10610?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aaron T. Myers updated HADOOP-10610:
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Resolution: Fixed
Fix Version/s: 2.6.0
Hadoop Flags: Reviewed
Status: Resolved (was: Patch Available)
I've just committed this to trunk and branch-2.
Thanks a lot for the contribution, Ted.
> 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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