[ 
https://issues.apache.org/jira/browse/MAHOUT-1218?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Suneel Marthi updated MAHOUT-1218:
----------------------------------

    Description: 
Running Streaming k-means with CosineDistanceMeasure, Fast Projection Search, 
number of clusters k= 60, number of estimated map clsuters -km = 60.

{Code}
Exception in thread "main" java.lang.IllegalArgumentException: Invalid number 
of estimated map clusters; There must be more than the final number of clusters 
(k log n vs k)
        at 
com.google.common.base.Preconditions.checkArgument(Preconditions.java:92)
        at 
org.apache.mahout.clustering.streaming.mapreduce.StreamingKMeansDriver.configureOptionsForWorkers(StreamingKMeansDriver.java:327)
        at 
org.apache.mahout.clustering.streaming.mapreduce.StreamingKMeansDriver.configureOptionsForWorkers(StreamingKMeansDriver.java:280)
        at 
org.apache.mahout.clustering.streaming.mapreduce.StreamingKMeansDriver.run(StreamingKMeansDriver.java:227)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
        at 
org.apache.mahout.clustering.streaming.mapreduce.StreamingKMeansDriver.main(StreamingKMeansDriver.java:472)
{Code}

  was:
Running Streaming k-means with CosineDistanceMeasure, Fast Projection Search, 
number of clusters k= 60, number of estimated map clsuters -km = 60.

{Code}
Exception in thread "main" java.lang.IllegalArgumentException: Invalid number 
of estimated map clusters; There must be more than the final number of clusters 
(k log n vs k)
        at 
com.google.common.base.Preconditions.checkArgument(Preconditions.java:92)
        at 
org.apache.mahout.clustering.streaming.mapreduce.StreamingKMeansDriver.configureOptionsForWorkers(StreamingKMeansDriver.java:327)
        at 
org.apache.mahout.clustering.streaming.mapreduce.StreamingKMeansDriver.configureOptionsForWorkers(StreamingKMeansDriver.java:280)
        at 
org.apache.mahout.clustering.streaming.mapreduce.StreamingKMeansDriver.run(StreamingKMeansDriver.java:227)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
        at 
org.apache.mahout.clustering.streaming.mapreduce.StreamingKMeansDriver.main(StreamingKMeansDriver.java:472)
{code}

    
> Streamimg k-means fails when the number of clusters specified is <= estimated 
> map clusters
> ------------------------------------------------------------------------------------------
>
>                 Key: MAHOUT-1218
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-1218
>             Project: Mahout
>          Issue Type: Bug
>          Components: Clustering
>    Affects Versions: 0.8
>            Reporter: Suneel Marthi
>            Assignee: Suneel Marthi
>
> Running Streaming k-means with CosineDistanceMeasure, Fast Projection Search, 
> number of clusters k= 60, number of estimated map clsuters -km = 60.
> {Code}
> Exception in thread "main" java.lang.IllegalArgumentException: Invalid number 
> of estimated map clusters; There must be more than the final number of 
> clusters (k log n vs k)
>       at 
> com.google.common.base.Preconditions.checkArgument(Preconditions.java:92)
>       at 
> org.apache.mahout.clustering.streaming.mapreduce.StreamingKMeansDriver.configureOptionsForWorkers(StreamingKMeansDriver.java:327)
>       at 
> org.apache.mahout.clustering.streaming.mapreduce.StreamingKMeansDriver.configureOptionsForWorkers(StreamingKMeansDriver.java:280)
>       at 
> org.apache.mahout.clustering.streaming.mapreduce.StreamingKMeansDriver.run(StreamingKMeansDriver.java:227)
>       at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
>       at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
>       at 
> org.apache.mahout.clustering.streaming.mapreduce.StreamingKMeansDriver.main(StreamingKMeansDriver.java:472)
> {Code}

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