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Posted to issues@lucene.apache.org by GitBox <gi...@apache.org> on 2021/03/29 18:30:58 UTC
[GitHub] [lucene-solr] mayya-sharipova opened a new pull request #2473: LUCENE-9507 Custom order for leaves
mayya-sharipova opened a new pull request #2473:
URL: https://github.com/apache/lucene-solr/pull/2473
Custom order for leaves in IndexReader and IndexWriter
1.Add an option to supply a custom leaf sorter for IndexWriter.
A DirectoryReader opened from this IndexWriter will have its leaf
readers sorted with the provided leaf sorter. This is useful for
indices on which it is expected to run many queries with particular
sort criteria (e.g. for time-based indices this is usually a
descending sort on timestamp). Providing leafSorter allows
to speed up early termination for this particular type of
sort queries.
2. Add an option to supply a custom sub-readers sorter for
BaseCompositeReader. In this case sub-readers will be sorted
according to the the provided leafSorter.
3. Add an option to supply a custom leaf sorter for
StandardDirectoryReader. The leaf readers of this
StandardDirectoryReader will be sorted according to
the the provided leaf sorter.
Backport for https://github.com/apache/lucene/pull/32
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[GitHub] [lucene-solr] mayya-sharipova merged pull request #2473: LUCENE-9507 Custom order for leaves
Posted by GitBox <gi...@apache.org>.
mayya-sharipova merged pull request #2473:
URL: https://github.com/apache/lucene-solr/pull/2473
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