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https://issues.apache.org/jira/browse/HADOOP-13530?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Adrian Muraru updated HADOOP-13530:
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Fix Version/s: (was: 2.6.0)
> Upgrade S3 fs.s3.buffer.dir to support multi directories
> --------------------------------------------------------
>
> Key: HADOOP-13530
> URL: https://issues.apache.org/jira/browse/HADOOP-13530
> Project: Hadoop Common
> Issue Type: Improvement
> Components: fs/s3
> Affects Versions: 2.4.0
> Reporter: Adrian Muraru
> Assignee: Ted Malaska
> Priority: Minor
>
> fs.s3.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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