You are viewing a plain text version of this content. The canonical link for it is here.
Posted to dev@lucene.apache.org by "Robert Muir (JIRA)" <ji...@apache.org> on 2014/05/04 17:25:14 UTC
[jira] [Resolved] (LUCENE-5638) Default Attributes are expensive
[ https://issues.apache.org/jira/browse/LUCENE-5638?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Robert Muir resolved LUCENE-5638.
---------------------------------
Resolution: Fixed
Fix Version/s: 5.0
4.9
> Default Attributes are expensive
> --------------------------------
>
> Key: LUCENE-5638
> URL: https://issues.apache.org/jira/browse/LUCENE-5638
> Project: Lucene - Core
> Issue Type: Bug
> Components: modules/analysis
> Reporter: Robert Muir
> Fix For: 4.9, 5.0
>
> Attachments: LUCENE-5638.patch, LUCENE-5638.patch, LUCENE-5638.patch, LUCENE-5638.patch, LUCENE-5638.patch
>
>
> Changes like LUCENE-5634 make it clear that the default AttributeFactory stuff has a very high cost: weakmaps/reflection/etc.
> Additionally I think clearAttributes() is more expensive than it should be: it has to traverse a linked-list, calling clear() per token.
> Operations like cloning (save/restoreState) have a high cost tll.
> Maybe we can have a better Default? In other words, rename DEFAULT_ATTRIBUTE_FACTORY to REFLECTION_ATTRIBUTE_FACTORY, and instead have a faster default factory that just has one AttributeImpl with the "core ones" that 95% of users are dealing with (TOKEN_ATTRIBUTE_FACTORY?): anything outside of that falls back to reflection.
--
This message was sent by Atlassian JIRA
(v6.2#6252)
---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@lucene.apache.org
For additional commands, e-mail: dev-help@lucene.apache.org