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https://issues.apache.org/jira/browse/MAHOUT-474?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen resolved MAHOUT-474.
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Assignee: Sean Owen
Fix Version/s: (was: 0.4)
Resolution: Not A Problem
AbstractJob already helps make intermediate stages compress their output. I
don't want to force the final output to be compressed. That is up to the caller
to set if desired.
> Should compress output of Job pairwiseSimilarity and Job asMatrix
> -----------------------------------------------------------------
>
> Key: MAHOUT-474
> URL: https://issues.apache.org/jira/browse/MAHOUT-474
> Project: Mahout
> Issue Type: Improvement
> Components: Collaborative Filtering
> Affects Versions: 0.4
> Reporter: Han Hui Wen
> Assignee: Sean Owen
>
> !https://issues.apache.org/jira/secure/attachment/12451985/RowSimilarityJob-CooccurrencesMapper-SimilarityReducer.jpg!
> From above picture ,we can see that the output of pairwiseSimilarity is very
> large ,we should compress them.
> SequenceFileOutputFormat.setOutputCompressionType(job, style);
> SequenceFileOutputFormat.setCompressOutput(job, compress);
> SequenceFileOutputFormat.setOutputCompressorClass(job, codecClass)
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