jackrabbit-oak-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Michael Marth (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (OAK-2679) Query engine: faster cost calculation
Date Fri, 25 Sep 2015 07:12:04 GMT

    [ https://issues.apache.org/jira/browse/OAK-2679?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14907727#comment-14907727

Michael Marth commented on OAK-2679:

Do you intend the follow up on the caching aspect in a separate issue or do you consider caching
query plans not necessary anymore?

> Query engine: faster cost calculation
> -------------------------------------
>                 Key: OAK-2679
>                 URL: https://issues.apache.org/jira/browse/OAK-2679
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: core, query
>            Reporter: Thomas Mueller
>            Assignee: Thomas Mueller
>              Labels: performance
>             Fix For: 1.3.7
>         Attachments: 0001-OAK-2679-Reduce-execution-plan-overhead_0.2.patch, OAK-2679-2.patch,
OAK-2679.patch, executionplancache.patch
> If there are many indexes, preparing a query can take a long time, in relation to executing
the query.
> The query execution plans can be cached. The cache should be invalidated if there are
new indexes, or indexes are changed; a simple solution might be to use a timeout, and / or
a manual cache clean via JMX or so.

This message was sent by Atlassian JIRA

View raw message