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Posted to dev@lucene.apache.org by "Robert Muir (JIRA)" <ji...@apache.org> on 2016/08/19 15:27:23 UTC
[jira] [Resolved] (LUCENE-7419) performance bug in
tokenstream.end()
[ https://issues.apache.org/jira/browse/LUCENE-7419?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Robert Muir resolved LUCENE-7419.
---------------------------------
Resolution: Fixed
> performance bug in tokenstream.end()
> ------------------------------------
>
> Key: LUCENE-7419
> URL: https://issues.apache.org/jira/browse/LUCENE-7419
> Project: Lucene - Core
> Issue Type: Bug
> Reporter: Robert Muir
> Priority: Blocker
> Fix For: master (7.0), 6.2.0
>
> Attachments: LUCENE-7419.patch
>
>
> TokenStream.end() calls getAttribute(), which is pretty costly to do per-stream.
> It does its current hack, because in the ctor of TokenStream is "too early".
> Instead, we can just add a variant of clear(), called end() to AttributeImpl. For most attributes it defers to clear, but for PosIncAtt it can handle the special case.
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