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https://issues.apache.org/jira/browse/MAPREDUCE-4087?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13242246#comment-13242246
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Ravi Gummadi commented on MAPREDUCE-4087:
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Attached patch is for branch-1.
> [Gridmix] GenerateDistCacheData job of Gridmix can become slow in some cases
> ----------------------------------------------------------------------------
>
> Key: MAPREDUCE-4087
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4087
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Reporter: Ravi Gummadi
> Assignee: Ravi Gummadi
> Attachments: 4087.patch
>
>
> In map() method of GenerateDistCacheData job of Gridmix, val.setSize() is
> done every time based on the bytes to be written to a distributed cache file.
> When we try to write data to next distributed cache file in the same map
> task, the size of random data generated in each iteration can become small
> based on the particular case. This can make this dist cache data generation
> slow.
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