NPE in CBayesThetaNormalizerReducer when using HBase
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Key: MAHOUT-431
URL: https://issues.apache.org/jira/browse/MAHOUT-431
Project: Mahout
Issue Type: Bug
Components: Classification
Affects Versions: 0.3, 0.4
Reporter: Jeremy Handcock
I'm trying to use the complementary Bayes classifier and store the model in
HBase (using BayesParameters.set("dataSource", "hbase")). When I run the MR
jobs using CBayesDrvier, I get a NullPointerException in
CBayesThetaNormalizerReducer at line 92:
hBconf.set(new HBaseConfiguration(job));
'hBconf' is a ThreadLocal<HBaseConfiguration> field and it looks like it has
not been initialized. I initialized it and the model built successfully. I
observed the same bug in the 0.3 release and in 0.4-SNAPSHOT. I'll attach a
patch that initializes the field.
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