Saketa Chalamchala created HDDS-15387:
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Summary: Add a SnapshotDiffValueParser to selectively deserialize
fields from KeyInfo/DirectoryIndo
Key: HDDS-15387
URL: https://issues.apache.org/jira/browse/HDDS-15387
Project: Apache Ozone
Issue Type: Task
Reporter: Saketa Chalamchala
Assignee: Saketa Chalamchala
Add a `SnapshotDiffValueParser` with methods to
1. Support deserializing required fields only using tag numbers from
KeyInfo/DirectoryInfo
- `updateID` to check for diff candidacy
- `objectID`, `parentID`, `name/keyName` for path resolution
- latest block layout, `size`, `fileChecksum` to indicate content change
- ACLs, metadata, tags to indicate meaningful metadata change
2. Build a compare signature by hashing content and metadata change fields.
This avoids deserializing the entire KeyInfo/DirectoryInfo value for key
comparisons.
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