Details
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Improvement
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Status: Resolved
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Major
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Resolution: Fixed
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None
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None
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HDDS Acadia
Description
We propose refactoring the HDDS DataNode IO path to enforce clean separation between the Container management and the Storage layers. All components requiring access to HDDS containers on a Datanode should do so via this Storage layer.
The proposed Storage layer would be responsible for end-to-end disk and volume management. This involves running disk checks and detecting disk failures, distributing data across disks as per the configured policy, collecting performance statistics.
Attached Design Doc gives an overview of the proposed class diagram.