NullPointerException when using GenericItemBasedRecommender with FileDataModel
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Key: MAHOUT-485
URL: https://issues.apache.org/jira/browse/MAHOUT-485
Project: Mahout
Issue Type: Bug
Components: Collaborative Filtering
Affects Versions: 0.4
Reporter: Sebastian Schelter
When GenericItemBasedRecommender is instantiated it calls getMinPreference on
DataModel to see if it has to build a capper. When used with a FileDataModel
this results in a NullPointerException as FileDataModel tries to delegate this
call to its not yet existing delegate (which is a GenericDataModel that is yet
to be loaded)
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