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Posted to dev@lucene.apache.org by "Michael McCandless (Resolved) (JIRA)" <ji...@apache.org> on 2012/03/20 16:33:39 UTC
[jira] [Resolved] (LUCENE-2445) Perf improvements for the DocsEnum
bulk read API
[ https://issues.apache.org/jira/browse/LUCENE-2445?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Michael McCandless resolved LUCENE-2445.
----------------------------------------
Resolution: Won't Fix
We removed bulk API in 4.0.
> Perf improvements for the DocsEnum bulk read API
> ------------------------------------------------
>
> Key: LUCENE-2445
> URL: https://issues.apache.org/jira/browse/LUCENE-2445
> Project: Lucene - Java
> Issue Type: Bug
> Components: core/index
> Reporter: Michael McCandless
> Fix For: 4.0
>
>
> I started to work on LUCENE-2443, to create a test showing the
> problems, but it turns out none of the core codecs (even sep/intblock)
> ever set a non-zero offset.
> So I set forth to fix sep to do so, but ran into some issues w/ the
> current bulk-read API that we should fix to make it higher
> performance:
> * Filtering of deleted docs should be the caller's job (saves an
> extra pass through the docs)
> * Probably docs should arrive as deltas and caller sums these up to
> get the actual docID
> * Whether to load freqs or not should be separately controllable
> * We may want to require that the int[] for docs and freqs are
> "aligned", ie the offset into each is the same
> * Maybe we should separate out a BulkDocsEnum from DocsEnum. We can
> make it optional for codecs (ie, we can emulate BulkDocsEnum from
> the DocsEnum)
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