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https://issues.apache.org/jira/browse/LUCENE-10280?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17453013#comment-17453013
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Adrien Grand commented on LUCENE-10280:
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This is adding another {{instanceof}} check in FixedBitSet, I wonder if it's
worth adding this level of specialization. Maybe we could only make this
enhancement storage-wise and construct a dense bitset at read time. This would
require a bit more allocations at read time, but it would also help keep
FixedBitSet#or simpler?
> Store BKD blocks with continuous ids more efficiently
> -----------------------------------------------------
>
> Key: LUCENE-10280
> URL: https://issues.apache.org/jira/browse/LUCENE-10280
> Project: Lucene - Core
> Issue Type: Improvement
> Components: core/codecs
> Reporter: Feng Guo
> Priority: Minor
> Time Spent: 20m
> Remaining Estimate: 0h
>
> For scenes that index is sorted on the field, it could be a common situation
> that blocks have continuous ids. Maywe can handle this situation more
> efficiently (only write the first id of this block). And we can just check
> {code:java}
> stritylysorted && (docIds[start+count-1] - docids[start] + 1) == count{code}
> to see if ids are continuous, the check should be very fast :)
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