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https://issues.apache.org/jira/browse/LUCENE-8798?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16838497#comment-16838497
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Mike Sokolov commented on LUCENE-8798:
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[~atris] I glanced at the issue you referenced, but I don't see how it relates
to this. Could you sketch out a use case where this would be better than using
the ordinals that we use today to identify segments? Would these be persisted?
> Autogenerated ID for LeafReaderContexts Within An IndexSearcher
> ---------------------------------------------------------------
>
> Key: LUCENE-8798
> URL: https://issues.apache.org/jira/browse/LUCENE-8798
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Atri Sharma
> Priority: Minor
>
> It would be good to be able to uniquely identify LeafReaderContext objects
> associated within a single IndexSearcher. This would allow storing of
> metadata around segments, such as demonstrated in
> https://issues.apache.org/jira/browse/LUCENE-879
> The ID will be unique across the IndexSearcher instance and will make no
> guarantees of any semantic value outside the instance.
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