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From Tomek Rękawek (JIRA) <j...@apache.org>
Subject [jira] [Reopened] (OAK-6455) Don't call observer concurrently from the CompositeNodeStore
Date Fri, 21 Jul 2017 14:47:00 GMT

     [ https://issues.apache.org/jira/browse/OAK-6455?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tomek Rękawek reopened OAK-6455:
--------------------------------

> Don't call observer concurrently from the CompositeNodeStore
> ------------------------------------------------------------
>
>                 Key: OAK-6455
>                 URL: https://issues.apache.org/jira/browse/OAK-6455
>             Project: Jackrabbit Oak
>          Issue Type: Bug
>          Components: composite
>            Reporter: Tomek Rękawek
>            Assignee: Tomek Rękawek
>             Fix For: 1.8, 1.7.4
>
>
> Per Observer interface
> {noformat}
> However, each observer is
>  * always guaranteed to see a linear sequence of changes. In other words the
>  * method will not be called concurrently from multiple threads and successive
>  * calls represent a linear sequence of repository states, i.e. the root
>  * state passed to a call is guaranteed to represent a repository state
> {noformat}
> Currently concurrent merge would result in concurrent calls to Observer. So that would
need to be serialized



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