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From "angela (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (OAK-2773) Speed up creation of JCR sessions
Date Tue, 11 Aug 2015 12:36:46 GMT

     [ https://issues.apache.org/jira/browse/OAK-2773?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

angela updated OAK-2773:
------------------------
    Fix Version/s: 1.3.4

> Speed up creation of JCR sessions
> ---------------------------------
>
>                 Key: OAK-2773
>                 URL: https://issues.apache.org/jira/browse/OAK-2773
>             Project: Jackrabbit Oak
>          Issue Type: Wish
>          Components: core
>    Affects Versions: 1.0.12, 1.2
>            Reporter: Przemo Pakulski
>              Labels: performance
>             Fix For: 1.3.4
>
>
> JCR sessions used to be lightweight objects and fast to create in Jackrabbit2/CRX.
> I noticed that in Oak creation of session is significantly more expensive. On my environment
creating Oak sessions is ~10 times slower than in crx2.
> The most of the time is spent in PrincipalProviderImpl class which executes many queries.
> Possible solutions are:
> * introduce MembershipCache as it was in Jackrabbit2
> * speed up the queries, actually the queries itself are pretty fast, calculation of execution
plans is heavy and adds much overhead
> * both



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