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https://issues.apache.org/jira/browse/MAHOUT-1612?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Suneel Marthi reassigned MAHOUT-1612:
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Assignee: Suneel Marthi
> 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
> Assignee: Suneel Marthi
> Labels: legacy
> Fix For: 0.10.0
>
>
> 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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