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https://issues.apache.org/jira/browse/MAHOUT-99?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12683376#action_12683376
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Richard Tomsett commented on MAHOUT-99:
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I tried just reverting back to SequenceFiles in the test and KMeansUtil classes
but couldn't get the test to complete correctly - must admit I didn't work on
it too long as it was late... I'm not sure quite what the problem was, but I
think it was just that I hadn't found all the relevant changes that needed to
be made. I guess if you've found it in the Canopy class (I take it that was
modified in this patch NOT to output SequenceFiles as well) that would explain
it :)
> Improving speed of KMeans
> -------------------------
>
> Key: MAHOUT-99
> URL: https://issues.apache.org/jira/browse/MAHOUT-99
> Project: Mahout
> Issue Type: Improvement
> Components: Clustering
> Reporter: Pallavi Palleti
> Assignee: Grant Ingersoll
> Fix For: 0.1
>
> Attachments: MAHOUT-99-1.patch, Mahout-99.patch, MAHOUT-99.patch
>
>
> Improved the speed of KMeans by passing only cluster ID from mapper to
> reducer. Previously, whole Cluster Info as formatted s`tring was being sent.
> Also removed the implicit assumption of Combiner runs only once approach and
> the code is modified accordingly so that it won't create a bug when combiner
> runs zero or more than once.
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