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From Joachim Müller (JIRA) <jetspeed-...@portals.apache.org>
Subject [jira] Updated: (JS2-893) cluster synchronization feature
Date Wed, 06 Aug 2008 15:28:44 GMT

     [ https://issues.apache.org/jira/browse/JS2-893?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Joachim Müller updated JS2-893:

    Attachment: JS2-893_patch.zip

patches for 2.1.2-POSTRELEASE, 2.1.3-POSTRELEASE, 2.2-dev

> cluster synchronization feature
> -------------------------------
>                 Key: JS2-893
>                 URL: https://issues.apache.org/jira/browse/JS2-893
>             Project: Jetspeed 2
>          Issue Type: New Feature
>          Components: Other
>    Affects Versions: 2.1.2, 2.1.3, 2.2
>            Reporter: Joachim Müller
>             Fix For: 2.1.2, 2.1.3, 2.2
>         Attachments: JS2-893_patch.zip
> We developed a cluster synchronization feature that is able to synchronize the execution
of an objects method cluster-wide. The approach is similar to the spring transaction proxy,
so we are able to AOP-inject the cluster synchronization via spring configuration. The component
is highly customizable. A new database table is used for synchonization, but any other data
container (i.e. broadcast-distributed-hashmap) could be used.
> One main application for this functionality is the start of many jetspeed cluster nodes
and synchronize the deployment of the PAs to the database. (Even with the VersionedApplicationManager
we experienced DB constraints failures on startup with fresh database, preventing the some
PAs from registration.)
> Patch follows (exists only for the 2.1.2-POSTRELEASE branch yet).

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