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https://issues.apache.org/jira/browse/HDFS-292?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12867670#action_12867670
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Konstantin Shvachko commented on HDFS-292:
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If it writes/reads thousands of files it would be a pretty long printout.
Should we just log per-file data or should we write it in the output file?
> TestDFSIO Should print stats for each file
> ------------------------------------------
>
> Key: HDFS-292
> URL: https://issues.apache.org/jira/browse/HDFS-292
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Raghu Angadi
>
> TestDFSIO is a pretty useful micro benchmark for testing reading and writing
> in DFS. When we want to analyze its results later, it would be more useful if
> the test prints out stats for each file/map along with the aggregated stats.
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