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Date: Fri, 30 Dec 2016 01:53:58 +0000 (UTC)
From: "Erick Erickson (JIRA)" <jira@apache.org>
To: dev@lucene.apache.org
Message-ID: <JIRA.12644576.1366886307000.616754.1483062838767@Atlassian.JIRA>
In-Reply-To: <JIRA.12644576.1366886307000@Atlassian.JIRA>
References: <JIRA.12644576.1366886307000@Atlassian.JIRA> <JIRA.12644576.1366886307034@arcas>
Subject: [jira] [Resolved] (SOLR-4763) Performance issue when using
 group.facet=true
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archived-at: Fri, 30 Dec 2016 01:54:00 -0000


     [ https://issues.apache.org/jira/browse/SOLR-4763?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Erick Erickson resolved SOLR-4763.
----------------------------------
       Resolution: Fixed
    Fix Version/s:     (was: 6.0)
                       (was: 5.5)
                   6.4
                   trunk

Actually, probably previous to 6.4. The consensus seems to be use JSON facets.

If JSON facets don't really answer we can re-open this

> Performance issue when using group.facet=true
> ---------------------------------------------
>
>                 Key: SOLR-4763
>                 URL: https://issues.apache.org/jira/browse/SOLR-4763
>             Project: Solr
>          Issue Type: Bug
>    Affects Versions: 4.2
>            Reporter: Alexander Koval
>            Assignee: Erick Erickson
>             Fix For: trunk, 6.4
>
>         Attachments: SOLR-4763.patch, SOLR-4763.patch, SOLR-4763.patch
>
>
> I do not know whether this is bug or not. But calculating facets with {{group.facet=true}} is too slow.
> I have query that:
> {code}
> "matches": 730597,
> "ngroups": 24024,
> {code}
> 1. All queries with {{group.facet=true}}:
> {code}
> "QTime": 5171
> "facet": {
>     "time": 4716
> {code}
> 2. Without {{group.facet}}:
> * First query:
> {code}
> "QTime": 3284
> "facet": {
>     "time": 3104
> {code}
> * Next queries:
> {code}
> "QTime": 230,
> "facet": {
>     "time": 76
> {code}
> So I think with {{group.facet=true}} Solr doesn't use cache to calculate facets.
> Is it possible to improve performance of facets when {{group.facet=true}}?


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