[jira] [Updated] (HDDS-15387) Add a SnapshotDiffValueParser to selectively deserialize fields from KeyInfo/DirectoryInfo

["Hui Fei (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HDDS-15387?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hui Fei updated HDDS-15387:
---------------------------
    Target Version/s: 2.3.0  (was: 2.2.0)

> Add a SnapshotDiffValueParser to selectively deserialize fields from KeyInfo/DirectoryInfo
> ------------------------------------------------------------------------------------------
>
>                 Key: HDDS-15387
>                 URL: https://issues.apache.org/jira/browse/HDDS-15387
>             Project: Apache Ozone
>          Issue Type: Sub-task
>            Reporter: Saketa Chalamchala
>            Assignee: Saketa Chalamchala
>            Priority: Major
>
> 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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