[jira] [Created] (MAHOUT-1612) NullPointerException happens during JSON output format for clusterdumper

["Guo Ruijing (JIRA)" <ji...@apache.org>]

Guo Ruijing created MAHOUT-1612:
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             Summary: NullPointerException happens during JSON output format for clusterdumper
                 Key: MAHOUT-1612
                 URL: https://issues.apache.org/jira/browse/MAHOUT-1612
             Project: Mahout
          Issue Type: Bug
          Components: Clustering
    Affects Versions: 0.9
            Reporter: Guo Ruijing


1. download datafile from:
http://archive.ics.uci.edu/ml/databases/synthetic_control/synthetic_control.data
2. put data file on hdfs:
hdfs dfs -mkdir testdata
hdfs dfs -put synthetic_control.data testdata/
3. run a mahout clustering job:
mahout org.apache.mahout.clustering.syntheticcontrol.kmeans.Job
4. run clusterdump with JSON format:
mahout clusterdump i output/clusters*-final -p output/clusteredPoints -o /tmp/report -of JSON

expected:
clusterdump with JSON format should succeeded same as CSV and TEXT

actually:
clusterdump with JSON format throw NullPointerException



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