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https://issues.apache.org/jira/browse/KNOX-526?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14392857#comment-14392857
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Larry McCay commented on KNOX-526:
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If the above description is less than clear - we can discuss further here in
the comments. :)
> Dispatch Refactoring Breaks Upgrade Compatibility
> -------------------------------------------------
>
> Key: KNOX-526
> URL: https://issues.apache.org/jira/browse/KNOX-526
> Project: Apache Knox
> Issue Type: Bug
> Components: Server
> Reporter: Larry McCay
> Assignee: Sumit Gupta
> Priority: Critical
>
> The refactoring of the dispatch code introduced an incompatibility for
> upgrades where the data directory is preserved. The gateway.xml file from the
> previous version has old classnames configured that are still valid classes
> but no longer Filters.
> We need to continue the refactoring to make the original classes valid
> Filters that extend the new DispatchFilter and provides whatever is needed in
> terms of new dispatch-impl config based on the refactoring.
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