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From "Uwe Schindler (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SOLR-4763) Performance issue when using group.facet=true
Date Mon, 14 Dec 2015 21:10:50 GMT

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

Uwe Schindler updated SOLR-4763:
--------------------------------
    Fix Version/s:     (was: 5.4)
                   5.5

> 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: 5.5, Trunk
>
>         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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