alan krumholz created MAHOUT-1327:
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Summary:
org.apache.mahout.clustering.classify.ClusterClassifier.readFromSeqFiles is
using a new instance of the Configuration object to read the file form the Path
instead of using the Configuration object passed to the method
Key: MAHOUT-1327
URL: https://issues.apache.org/jira/browse/MAHOUT-1327
Project: Mahout
Issue Type: Bug
Components: Clustering
Affects Versions: 0.8, 0.7
Reporter: alan krumholz
Priority: Critical
When you use KmeansDriver.run with a Configuration object pointing to HDFS:
Configuration conf = new Configuration();
conf.addResource(new
Path("C:\\hdp-win\\hadoop\\hadoop-1.1.0-SNAPSHOT\\conf\\core-site.xml"));
conf.addResource(new
Path("C:\\hdp-win\\hadoop\\hadoop-1.1.0-SNAPSHOT\\conf\\hdfs-site.xml"))
It calls
org.apache.mahout.clustering.classify.ClusterClassifier.readFromSeqFiles
at some point and I get an exception (there is no problem if you run it with a
conf object pointing to the local file system):
java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
at java.util.ArrayList.RangeCheck(ArrayList.java:547)
at java.util.ArrayList.get(ArrayList.java:322)
at
org.apache.mahout.clustering.classify.ClusterClassifier.readFromSeqFiles(ClusterClassifier.java:215)
I think this is happening because that method is using a new instance of the
Configuration object to read the file form the Path instead of using the
Configuration object passed to the method.
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