[SOLR-7000] FileFloatSource init error while field terms zero

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 4.3.1, 6.0
• Fix Version/s: 4.3.1
• Component/s: search
• Assignee: Unassigned
• Reporter: longkeyy
• Created: 19/Jan/15 14:06
• Updated: 09/May/16 18:47

Description

org.apache.solr.search.function.FileFloatSource.getFloats(FileFloatSource, IndexReader)

line:273
TermsEnum termsEnum = MultiFields.getTerms(reader, idName).iterator(null);

while filed(idName) does not have term(for example docnum = 0) ,MultiFields.getTerms will return null, and .iterator(null) will throw java.lang.NullPointerException

fix it:

Terms terms = MultiFields.getTerms(reader, idName);
if (terms == null)
return vals;
TermsEnum termsEnum = terms.iterator(null);
DocsEnum docsEnum = null;