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https://issues.apache.org/jira/browse/HDDS-3829?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aravindan Vijayan updated HDDS-3829:
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Target Version/s: 1.2.0
> Introduce Layout Feature interface in Ozone
> -------------------------------------------
>
> Key: HDDS-3829
> URL: https://issues.apache.org/jira/browse/HDDS-3829
> Project: Hadoop Distributed Data Store
> Issue Type: Sub-task
> Components: Ozone Manager
> Reporter: Aravindan Vijayan
> Assignee: Aravindan Vijayan
> Priority: Major
> Labels: pull-request-available
>
> * Implement the concept of a 'Layout Feature' in Ozone (with sample usage in
> Ozone Manager), which defines a specific change in on-disk layout in Ozone.
> * Every feature is associated with a layout version, and an API corresponding
> to the feature cannot be invoked (throws NOT_SUPPORTED_OPERATION) before
> finalization.
> * Created an annotation based 'aspect' for "guarding" new APIs that are
> introduced by Layout Features. Check out
> TestOMLayoutFeatureAspect#testCheckLayoutFeature.
> * Added sample features and tests for ease of review (To be removed before
> commit).
> * Created an abstract VersionManager and an inherited OM Version manager to
> initialize features, check if feature is allowed, check need to finalize, do
> finalization.
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