[LUCENE-7950] SimpleNaiveBayesDocumentClassifier throws NPE if no docs have the class field

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 6.6
• Fix Version/s: 7.1
• Component/s: modules/classification
• Lucene Fields: New
• Assignee: Tommaso Teofili
• Reporter: Tommaso Teofili
• Created: 02/Sep/17 12:43
• Updated: 28/Aug/22 15:18
• Resolved: 02/Sep/17 12:46

Description

As discussed on the solr-user@ list the SNBDC throws a NPE as the potential null value resulting from MultiFields.getTerms(indexReader, classFieldName) is not properly handled.