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https://issues.apache.org/jira/browse/OOZIE-615?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Kanter updated OOZIE-615:
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Attachment: OozieHADesign.pdf
Here's a document describing at a high level the HA design.
I've also mostly implemented it and should (hopefully) be able to post a patch
on Monday.
I didn't end up using any of the old code that Virag attached (it was _too_ old
:)). I ended up using Apache Curator for the ZooKeeper primitives (locks and
service discovery). I'll explain some more details about the
implementation/code when I post the patch.
> Support high availability for the Oozie service
> -----------------------------------------------
>
> Key: OOZIE-615
> URL: https://issues.apache.org/jira/browse/OOZIE-615
> Project: Oozie
> Issue Type: New Feature
> Reporter: Craig Peters
> Assignee: Robert Kanter
> Attachments: OozieHADesign.pdf, zookeeper_yahoo_code.zip
>
>
> As Oozie becomes a critical component in the Hadoop ecosystem users needs
> assured availability of the services provided by Oozie. To support this need
> Oozie should include a new feature to support high availability. This
> feature needs to take into consideration that Oozie provides RESTful APIs,
> Java APIs, and a command line API that should all be insensitive to the
> availability of any specific server or components. At Yahoo! it is not
> required that there be session fail-over from the client. It is acceptable
> for the client to reconnect if a session is lost as long as the state data
> managed by the Oozie service is not lost.
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