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From "Earwin Burrfoot (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-2311) Pass potent SR to IRWarmer.warm(), and also call warm() for new segments
Date Thu, 11 Mar 2010 22:26:27 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-2311?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12844250#action_12844250
] 

Earwin Burrfoot commented on LUCENE-2311:
-----------------------------------------

Not only newly created, but newly opened too! So your readers are warmed, if you just created
an IW, called getReader, and didn't do any writes at all yet.

> Pass potent SR to IRWarmer.warm(), and also call warm() for new segments
> ------------------------------------------------------------------------
>
>                 Key: LUCENE-2311
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2311
>             Project: Lucene - Java
>          Issue Type: Improvement
>            Reporter: Earwin Burrfoot
>             Fix For: 3.1
>
>
> Currently warm() receives a SegmentReader without terms index and docstores.
> It would be arguably more useful for the app to receive a fully loaded reader, so it
can actually fire up some caches. If the warmer is undefined on IW, we probably leave things
as they are.
> It is also arguably more concise and clear to call warm() on all newly created segments,
so there is a single point of warming readers in NRT context, and every subreader coming from
getReader is guaranteed to be warmed up -> you don't have to introduce even more mess in
your code by rechecking it.

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