You are viewing a plain text version of this content. The canonical link for it is here.
Posted to dev@lucene.apache.org by "Alan Woodward (JIRA)" <ji...@apache.org> on 2016/06/29 18:57:05 UTC
[jira] [Reopened] (LUCENE-7364) Don't use BooleanScorer for small
segments
[ https://issues.apache.org/jira/browse/LUCENE-7364?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Alan Woodward reopened LUCENE-7364:
-----------------------------------
I think you meant to resolve LUCENE-6914 [~hossman]?
> Don't use BooleanScorer for small segments
> ------------------------------------------
>
> Key: LUCENE-7364
> URL: https://issues.apache.org/jira/browse/LUCENE-7364
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Alan Woodward
> Assignee: Alan Woodward
>
> If a BooleanQuery meets certain criteria (only contains disjunctions, is likely to match large numbers of docs) then we use a BooleanScorer to score groups of 1024 docs at a time. This allocates arrays of 1024 Bucket objects up-front. On very small segments (for example, a MemoryIndex) this is very wasteful of memory, particularly if the query is large or deeply-nested. We should avoid using a bulk scorer on these segments.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@lucene.apache.org
For additional commands, e-mail: dev-help@lucene.apache.org