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From "Robert Muir (Commented) (JIRA)" <>
Subject [jira] [Commented] (LUCENE-3500) improve getLiveDocs() performance
Date Sat, 08 Oct 2011 15:04:29 GMT


Robert Muir commented on LUCENE-3500:

Where is getLiveDocs called in a tight loop?

I can see this making sense for the old IR.isDeleted, but we shouldnt be calling getLiveDocs
over and over again!
> improve getLiveDocs() performance
> ---------------------------------
>                 Key: LUCENE-3500
>                 URL:
>             Project: Lucene - Java
>          Issue Type: Improvement
>            Reporter: Yonik Seeley
>            Priority: Minor
>         Attachments: LUCENE-3500.patch
> On segmentReader, liveDocs is volatile because they used to be loaded on demand.
> This no longer appears to be the case... liveDocs are always loaded up front.
> This also means that getLiveDocs() can never fail (even after close), and we can remove
the ensureOpen call.
> Minor optimizations, but volatile reads still do prevent optimizations across that boundary.

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