Underlying Apache JackRabbit 1.6.1 bug causes data corruption
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                 Key: MAGNOLIA-3188
                 URL: http://jira.magnolia-cms.com/browse/MAGNOLIA-3188
             Project: Magnolia
          Issue Type: Bug
          Components: activation
    Affects Versions: 4.3.1, 4.3
            Reporter: Paul Jara
            Assignee: Philipp Bärfuss
            Priority: Critical


Apache JackRabbit 1.6.x is claimed to be backwards compatible with previous 
version. That is not the case and it appears to be leading to severe data 
corruption issues in our production environment. Specifically, in previous 
versions of JackRabbit, jcr:isCheckedOut is declared mix:versionable. In the 
new version it is declared mix:simpleVersionable.

The problem results in some warnings similar to the following:

ItemManager - property at /path/to/node/jcr:isCheckedOut has invalid 
definitionId (1284956073)

However, it appears to cause activation/deactivation to fail and in at least 
one case, an activation caused corrupt data to be deployed to the production 
public instances of our environment causing the entire repository workspace to 
become corrupt.

The JackRabbit bug has just been declared resolved here (#JCR-2433) 
https://issues.apache.org/jira/browse/JCR-2433

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