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From "Michael McCandless (JIRA)" <j...@apache.org>
Subject [jira] Updated: (LUCENE-2378) Cutover remaining usage of pre-flex APIs
Date Thu, 17 Jun 2010 22:13:22 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-2378?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Michael McCandless updated LUCENE-2378:
---------------------------------------

    Attachment: LUCENE-2378.patch

I found the source of the massive slowdown when enum'ing docs -- attached patch fixes it.
 I messed up the logic on whether the incoming DocsEnum can be reused, thus causing a new
DocsEnum to be created for each sub-segment on each .docs() call!

With this I'm seeing trunk (6432 msec) slightly faster than 3x (6659 msec), for term + docs
enum.

But terms enum alone is still slightly slower (trunk is 5312; 3x is 5019 msec).

> Cutover remaining usage of pre-flex APIs
> ----------------------------------------
>
>                 Key: LUCENE-2378
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2378
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: Index
>            Reporter: Michael McCandless
>            Assignee: Michael McCandless
>             Fix For: 4.0
>
>         Attachments: LUCENE-2378.patch, LUCENE-2378.patch, LUCENE-2378.patch, LUCENE-2378_FileFloatSource.patch,
LUCENE-2378_PagedBytes.patch, LUCENE-2378_UnInvertedField.patch, TestEnumPerf.java, TestEnumPerf.java
>
>
> A number of places still use the pre-flex APIs.
> This is actually healthy, since it gives us ongoing testing of the back compat emulation
layer.
> But we should at some point cut them all over to flex.  Latest we can do this is 4.0,
but I'm not sure we should do them all for 3.1... still marking this as 3.1 to "remind us"
:)

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