[
https://issues.apache.org/jira/browse/LUCENE-10031?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Adrien Grand resolved LUCENE-10031.
-----------------------------------
Fix Version/s: 8.10
Resolution: Fixed
> Speedup to SortedDocIDMerger when sorting on low-cardinality fields
> -------------------------------------------------------------------
>
> Key: LUCENE-10031
> URL: https://issues.apache.org/jira/browse/LUCENE-10031
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Adrien Grand
> Priority: Minor
> Fix For: 8.10
>
> Time Spent: 1h
> Remaining Estimate: 0h
>
> I've been looking at profiles of indexing with index sorting enabled and saw
> non-negligible time spent in SortedDocIDMerger. This isn't completely
> surprising as this little class is called on every document whenever merging
> postings, doc values, stored fields, etc.
> I'm especially interested in cases when the sort key is on a low cardinality
> field, so the priority queue doesn't get reordered often. I've been playing
> with a change to SortedDocIdMerger that makes merging significantly faster in
> that case.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org
For additional commands, e-mail: issues-h...@lucene.apache.org
