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From "Michael McCandless (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (LUCENE-7419) performance bug in tokenstream.end()
Date Thu, 23 Feb 2017 12:22:45 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-7419?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Michael McCandless updated LUCENE-7419:
---------------------------------------
    Fix Version/s: 5.5.5

> 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, 5.5.5
>
>         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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