[jira] [Created] (MAHOUT-1486) Streaming KMeans NPE

["Reinis Vicups (JIRA)" <ji...@apache.org>]

Reinis Vicups created MAHOUT-1486:
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             Summary: Streaming KMeans NPE
                 Key: MAHOUT-1486
                 URL: https://issues.apache.org/jira/browse/MAHOUT-1486
             Project: Mahout
          Issue Type: Bug
          Components: Clustering
    Affects Versions: 0.8
            Reporter: Reinis Vicups


I am assuming that this occurs because of  --reduceStreamingKMeans (-rskm) option set. Will try and test it without reduce and report if the NPE goes away.

Error: java.lang.NullPointerException
        at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:187)
        at org.apache.mahout.math.random.WeightedThing.<init>(WeightedThing.java:31)
        at org.apache.mahout.math.neighborhood.BruteSearch.searchFirst(BruteSearch.java:127)
        at org.apache.mahout.clustering.ClusteringUtils.estimateDistanceCutoff(ClusteringUtils.java:116)
        at org.apache.mahout.clustering.streaming.mapreduce.StreamingKMeansThread.call(StreamingKMeansThread.java:63)
        at org.apache.mahout.clustering.streaming.mapreduce.StreamingKMeansReducer.reduce(StreamingKMeansReducer.java:55)
        at org.apache.mahout.clustering.streaming.mapreduce.StreamingKMeansReducer.reduce(StreamingKMeansReducer.java:35)
        at org.apache.hadoop.mapreduce.Reducer.run(Reducer.java:171)
        at org.apache.hadoop.mapred.ReduceTask.runNewReducer(ReduceTask.java:627)
        at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:389)
        at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:165)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:415)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1548)
        at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:160)



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