IntWritable / VectorWritable cast problem in classifier/clustering
implementations
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Key: MAHOUT-726
URL: https://issues.apache.org/jira/browse/MAHOUT-726
Project: Mahout
Issue Type: Bug
Components: Classification, Clustering
Affects Versions: 0.5
Reporter: Sean Owen
Fix For: 0.6
I think we've seen this sort of error, most recently reported by Hector:
Exception in thread "main" java.lang.ClassCastException:
org.apache.hadoop.io.IntWritable cannot be cast to
org.apache.mahout.math.VectorWritable
at
org.apache.mahout.clustering.kmeans.RandomSeedGenerator.buildRandom(RandomSeedGenerator.java:90)
at
org.apache.mahout.clustering.kmeans.KMeansDriver.run(KMeansDriver.java:102)
Hector indicates it's also in LDA and Dirichlet, so probably a common issue to
all, though also I suspect an easy fix whatever it is.
Tracking it formally with a JIRA to record the resolution.
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