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Posted to dev@lucene.apache.org by "Adrien Grand (JIRA)" <ji...@apache.org> on 2018/12/21 14:58:00 UTC
[jira] [Resolved] (LUCENE-8600) DocValuesFieldUpdates should use a
better sort
[ https://issues.apache.org/jira/browse/LUCENE-8600?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Adrien Grand resolved LUCENE-8600.
----------------------------------
Resolution: Fixed
Fix Version/s: 7.7
master (8.0)
> DocValuesFieldUpdates should use a better sort
> ----------------------------------------------
>
> Key: LUCENE-8600
> URL: https://issues.apache.org/jira/browse/LUCENE-8600
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Adrien Grand
> Priority: Minor
> Fix For: master (8.0), 7.7
>
> Attachments: LUCENE-8600.patch
>
>
> This is a follow-up to LUCENE-8598: Simon identified that swaps are a bottleneck to applying doc-value updates, in particular due to the overhead of packed ints. It turns out that InPlaceMergeSorter does LOTS of swaps in order to perform in-place. Replacing with a more efficient sort should help.
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