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Posted to oak-issues@jackrabbit.apache.org by "Przemo Pakulski (JIRA)" <ji...@apache.org> on 2015/04/15 14:05:31 UTC

[jira] [Created] (OAK-2773) Speedup creation of JCR session

Przemo Pakulski created OAK-2773:
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             Summary: Speedup creation of JCR session
                 Key: OAK-2773
                 URL: https://issues.apache.org/jira/browse/OAK-2773
             Project: Jackrabbit Oak
          Issue Type: Wish
          Components: core
    Affects Versions: 1.2, 1.0.12
            Reporter: Przemo Pakulski


JCR sessions used to be lightweight objects and chip 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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