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https://issues.apache.org/jira/browse/MAPREDUCE-4651?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13465467#comment-13465467
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Konstantin Shvachko commented on MAPREDUCE-4651:
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That is because I committed it. Jakob reviewed.
> Benchmarking random reads with DFSIO
> ------------------------------------
>
> Key: MAPREDUCE-4651
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4651
> Project: Hadoop Map/Reduce
> Issue Type: New Feature
> Components: benchmarks, test
> Affects Versions: 1.0.0
> Reporter: Konstantin Shvachko
> Assignee: Konstantin Shvachko
> Fix For: 0.23.4
>
> Attachments: randomDFSIO.patch, randomDFSIO.patch, randomDFSIO.patch
>
>
> TestDFSIO measures throughput of HDFS write, read, and append operations. It
> will be useful to have an option to use it for benchmarking random reads.
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