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From Vadim Gindin <vgin...@detectum.com>
Subject Re: Read DocValue twice
Date Thu, 22 Feb 2018 11:11:23 GMT
I'd like to use "explain" mechanism to output some additional match
information: scoring formula, detailed matching information and so on. But
now it seems, "explain" works slower even than just logging of matching
information to a file from score() method.

- What is the most effective way to do this? Is there a possibility to
accelerate "explain", for example with scorer caching?
- Lucene uses the only Scorer (for entire segment) for calling score()
method. What about explain()?
- Iterators are really - readable-once only?

Regards,
Vadim Gindin

On Thu, Feb 22, 2018 at 3:03 PM, Adrien Grand <jpountz@gmail.com> wrote:

> If you are talking about explanations, then yes, it's fine. Explain() is
> used for debugging, it is fine if it is slow. However Lucene creates only
> one Scorer for all documents of an entire segment when it comes to actually
> running a query.
>
> Le jeu. 22 févr. 2018 à 07:06, Vadim Gindin <vgindin@detectum.com> a
> écrit :
>
> > Adrien, thank's a lot!  It looks like a working solution for my bugs. I
> > really appreciate it.
> >
> > I just want to ask. Is it really effective way create a Scorer for every
> > document? Can we say, that it's designed for Scorer to be lightweight and
> > fast enough so?
> >
> > On Wed, Feb 21, 2018 at 6:42 PM, Adrien Grand <jpountz@gmail.com> wrote:
> >
> > > This might not solve all problems, but you should stop caching the
> weight
> > > in the query and stop caching the scorer in the weight: just create a
> new
> > > scorer in calls to explain().
> > >
> > > Le mer. 21 févr. 2018 à 14:05, Vadim Gindin <vgindin@detectum.com>
a
> > > écrit :
> > >
> > > > The test gives the following error:
> > > >
> > > > java.lang.AssertionError: Docs enums are only supposed to be consumed
> > in
> > > > the thread in which they have been acquired. But was acquired in
> > > > Thread[elasticsearch[node_s2][search][T#4],5,TGRP-
> CustomQueryParserIT]
> > > and
> > > > consumed in
> > > > Thread[elasticsearch[node_s2][search][T#2],5,TGRP-
> CustomQueryParserIT].
> > > > at __randomizedtesting.SeedInfo.seed([935231818B6C9F26]:0)
> > > > at
> > > >
> > > > org.apache.lucene.index.AssertingLeafReader.assertThread(
> > > AssertingLeafReader.java:42)
> > > > at
> > > >
> > > > org.apache.lucene.index.AssertingLeafReader.access$
> > > 000(AssertingLeafReader.java:36)
> > > > at
> > > >
> > > > org.apache.lucene.index.AssertingLeafReader$
> > > AssertingPostingsEnum.advance(AssertingLeafReader.java:330)
> > > > at
> > > >
> > > > org.apache.lucene.search.DisjunctionDISIApproximation.advance(
> > > DisjunctionDISIApproximation.java:66)
> > > > at
> > > >
> > > > com.detectum.query.phrase.PrizeDisjunctionScorer.explain(
> > > PrizeDisjunctionScorer.java:220)
> > > >
> > > > from explain() method.
> > > >
> > > >
> > > >
> > > > On Tue, Feb 20, 2018 at 8:03 PM, Vadim Gindin <vgindin@detectum.com>
> > > > wrote:
> > > >
> > > > > Probably it is not possible to attach files from email letter. Here
> > > they
> > > > > are:
> > > > >
> > > > > ConstTermScorer.java
> > > > > <
> > http://lucene.472066.n3.nabble.com/file/t493564/ConstTermScorer.java>
> > > > > PrizeDisjunctionScorer.java
> > > > > <http://lucene.472066.n3.nabble.com/file/t493564/
> > > > > PrizeDisjunctionScorer.java>
> > > > > PhraseQuery.java
> > > > > <http://lucene.472066.n3.nabble.com/file/t493564/PhraseQuery.java>
> > > > >
> > > > >
> > > > >
> > > > > --
> > > > > Sent from: http://lucene.472066.n3.nabble.com/Lucene-Java-Users-
> > > > > f532864.html
> > > > >
> > > > > ------------------------------------------------------------
> ---------
> > > > > To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
> > > > > For additional commands, e-mail: java-user-help@lucene.apache.org
> > > > >
> > > > >
> > > >
> > >
> >
>

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