[
https://issues.apache.org/jira/browse/LUCENE-6198?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14290576#comment-14290576
]
Robert Muir commented on LUCENE-6198:
-------------------------------------
{quote}
Or maybe we simply disallow recursive approximations for starters? I do like
that the current patch is a baby step that looks like it can succeed
{quote}
its not clear at all that this complicated stuff you guys propose would even
help.
The current patch passes all tests and i sat alongside luceneutil benchmark
making it. Please dont underestimate how annoying it is to change the code in
any way without pissing that thing off brutally.
I don't think we should try to do complicated things all at once. At least i
won't be the one doing it. Its gotta be realistic: and its gotta have realistic
goals.
Plain and simple: speed up the proximity queries. I'm not trying to speed up
advance(). Leave that for another issue, plenty of time has been wasted on that
before.
> two phase intersection
> ----------------------
>
> Key: LUCENE-6198
> URL: https://issues.apache.org/jira/browse/LUCENE-6198
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Robert Muir
> Attachments: LUCENE-6198.patch
>
>
> Currently some scorers have to do a lot of per-document work to determine if
> a document is a match. The simplest example is a phrase scorer, but there are
> others (spans, sloppy phrase, geospatial, etc).
> Imagine a conjunction with two MUST clauses, one that is a term that matches
> all odd documents, another that is a phrase matching all even documents.
> Today this conjunction will be very expensive, because the zig-zag
> intersection is reading a ton of useless positions.
> The same problem happens with filteredQuery and anything else that acts like
> a conjunction.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
