Marvin Justice created LUCENE-9133:
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Summary: TermFilteredPresearcher NPE issue with empty fields
Key: LUCENE-9133
URL: https://issues.apache.org/jira/browse/LUCENE-9133
Project: Lucene - Core
Issue Type: Bug
Reporter: Marvin Justice
Encountered a situation where a document contained a field value which analyzed
away to nothing. The result was a NPE in TermFilteredPresearher#buildQuery. We
filter out purely empty fields before creating the Document for Monitor#match
but it's hard to know up front when a non-empty field will produce zero tokens
after analysis. Will follow up with a PR containing a simple unit test that
triggers the NPE along with a proposed fix.
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