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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