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https://issues.apache.org/jira/browse/LUCENE-7744?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16249477#comment-16249477
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ASF GitHub Bot commented on LUCENE-7744:
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Github user xabbu42 closed the pull request at:
https://github.com/apache/lucene-solr/pull/167
> default value for scoring payloads
> ----------------------------------
>
> Key: LUCENE-7744
> URL: https://issues.apache.org/jira/browse/LUCENE-7744
> Project: Lucene - Core
> Issue Type: New Feature
> Components: core/query/scoring
> Reporter: Nathan Gass
> Assignee: Erik Hatcher
> Priority: Minor
> Fix For: 7.0
>
>
> In lucene 5, PayloadTermQuery used a hardcoded default of 1.0 for terms
> without a payload. The replacing PayloadScoreQuery in lucene 6 just ignores
> those terms. This is unflexible and wrong for many use cases (for example
> using Payloads to deemphasize some terms, where terms without payload should
> result in maximum score instead of being ignored).
> In my pull request I defer the decision on what to do with missing payloads
> to the scorePayload method of the similarity, which has to check the given
> payload for null and handle that case. I believe this breaks backwards
> compatibility?
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