Adrien Grand created LUCENE-7839:
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Summary: Optimize the default NormsFormat for the case that all
norms are in 0..16
Key: LUCENE-7839
URL: https://issues.apache.org/jira/browse/LUCENE-7839
Project: Lucene - Core
Issue Type: Task
Reporter: Adrien Grand
Priority: Minor
Given how we now store the length of the field in norms, we could optimize the
default norms format for the case that all norms are in 0..16 and store it on 4
bits. This would be picked up for short fields that have less than 16 terms
(eg. title fields) and reduce disk utilization by 2.
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