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https://issues.apache.org/jira/browse/MAPREDUCE-2408?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13040726#comment-13040726
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Amar Kamat commented on MAPREDUCE-2408:
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Hong,
Thanks a lot for your review. You are right. The compression ratios table will
be different for different codecs. The empirical values table in this patch is
computed for the default codec (i.e Gzip). We have compiled similar table for
LZO and it seems LZO too shows some pattern in that respect. The plan is to add
other codecs incrementally. I will open a JIRA to track LZO compression
emulation.
> Make Gridmix emulate usage of data compression
> ----------------------------------------------
>
> Key: MAPREDUCE-2408
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2408
> Project: Hadoop Map/Reduce
> Issue Type: New Feature
> Components: contrib/gridmix
> Reporter: Ravi Gummadi
> Assignee: Amar Kamat
> Fix For: 0.23.0
>
> Attachments: MR-2408-gridmix-compression-emulation-v1.1.patch
>
>
> Currently Gridmix emulates disk IO load only. This JIRA is to make Gridmix
> emulate load due to data compression as defined by the job-trace.
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