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From "Thomas Mueller (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (OAK-2679) Query engine: cache execution plans
Date Fri, 25 Sep 2015 06:06:05 GMT

     [ https://issues.apache.org/jira/browse/OAK-2679?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Thomas Mueller updated OAK-2679:
--------------------------------
    Attachment: OAK-2679-2.patch

OAK-2679-2.patch

> Query engine: cache execution plans
> -----------------------------------
>
>                 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.



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