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Posted to issues@ozone.apache.org by "Ethan Rose (Jira)" <ji...@apache.org> on 2021/08/09 16:43:00 UTC

[jira] [Updated] (HDDS-4303) Ensure LayoutVersion is unique and monotonicaly increasing in LayoutFeature enums

     [ https://issues.apache.org/jira/browse/HDDS-4303?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ethan Rose updated HDDS-4303:
-----------------------------
    Target Version/s: 1.3.0  (was: 1.2.0)

> Ensure LayoutVersion is unique and monotonicaly increasing in LayoutFeature enums
> ---------------------------------------------------------------------------------
>
>                 Key: HDDS-4303
>                 URL: https://issues.apache.org/jira/browse/HDDS-4303
>             Project: Apache Ozone
>          Issue Type: Sub-task
>            Reporter: István Fajth
>            Priority: Major
>
> Currently OMLayoutFeature and HDDSLayoutFeature has a field to store the LayoutVersion associated with the Feature itself.
> We do not ensure in any way to have that version increasing strictly monotonically, and that would be a desirable property, as the abstract version manager uses the version as a key in a map, and if there is a collision, then that can cascade features having the same version.
> The best way would possibly be to use the ordinal of the enum, but there might be other solutions for this.



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