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Posted to dev@lucene.apache.org by "Robert Muir (JIRA)" <ji...@apache.org> on 2014/09/30 00:14:34 UTC
[jira] [Created] (LUCENE-5978) don't write a norm of infinity when
analyzer returns no tokens
Robert Muir created LUCENE-5978:
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Summary: don't write a norm of infinity when analyzer returns no tokens
Key: LUCENE-5978
URL: https://issues.apache.org/jira/browse/LUCENE-5978
Project: Lucene - Core
Issue Type: Bug
Reporter: Robert Muir
When a document doesn't have the field, we fill with zero. when a segment doesn't have the field, we also fill with zero.
however, when the analyzer doesn't return any terms for the field, we still call similarity.computeNorm(0)... with the default similarity this encodes infinity... -1
in such a case, it doesnt really matter what the norm is, since it has no terms. But its more efficient for e.g. compression if we consistently use zero.
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