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From Michael Dürig (JIRA) <j...@apache.org>
Subject [jira] [Resolved] (OAK-1416) Adding many siblings does not scale as expected in the number of added nodes
Date Tue, 18 Mar 2014 17:19:43 GMT

     [ https://issues.apache.org/jira/browse/OAK-1416?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Michael Dürig resolved OAK-1416.
--------------------------------

       Resolution: Fixed
    Fix Version/s:     (was: 0.20)
                   0.19

> Adding many siblings does not scale as expected in the number of added nodes
> ----------------------------------------------------------------------------
>
>                 Key: OAK-1416
>                 URL: https://issues.apache.org/jira/browse/OAK-1416
>             Project: Jackrabbit Oak
>          Issue Type: Bug
>          Components: mongomk
>            Reporter: Michael Dürig
>            Assignee: Marcel Reutegger
>            Priority: Critical
>             Fix For: 0.19
>
>
> {{org.apache.jackrabbit.oak.jcr.LargeOperationIT#manySiblings}} does not scale linearly.
Neither on a segment nor on a document node store:
> {code}
> seg quotients: 0.4181951174217804, 0.4163634468727202, 0.8406068389090829, 1.0735629207664423,
1.290574274619522
> doc quotients: 1.5713552072927073, 0.6562667320967186, 0.6101785222342979, 2.0164792911151244,
1.6989089236000476
> {code}
> In both cases adding sibling becomes more expensive when there are already many siblings.
Although the behaviour is more expressed on a document node store.  See also OAK-1413 on how
to read these numbers. 



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