[jira] [Commented] (HDDS-4183) [FSO]Support backward compatible upgrade to a version with key prefix management

["Ethan Rose (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HDDS-4183?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17440639#comment-17440639 ] 

Ethan Rose commented on HDDS-4183:
----------------------------------

In 1.2.0 FSO will only be supported in new clusters, so this has been moved out to 1.3.0.

> [FSO]Support backward compatible upgrade to a version with key prefix management
> --------------------------------------------------------------------------------
>
>                 Key: HDDS-4183
>                 URL: https://issues.apache.org/jira/browse/HDDS-4183
>             Project: Apache Ozone
>          Issue Type: Sub-task
>          Components: Ozone Manager
>            Reporter: Aravindan Vijayan
>            Assignee: Ethan Rose
>            Priority: Blocker
>              Labels: pull-request-available
>
> HDDS-2939 makes fundamental changes to how OM writes & reads its metadata. Since this is about as big a layout change as can be, we have to make sure this is properly managed through the upgrade flow. In addition to upgrades, we should support downgrades from pre-finalized state of OM. 
> cc [~rakeshr] / [~msingh]



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