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https://issues.apache.org/jira/browse/HDFS-12000?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16078405#comment-16078405
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Weiwei Yang commented on HDFS-12000:
------------------------------------

Hi [~msingh], both are very good points, I agree. I think we will need to think 
about how to implement a thread safe library to generate unique version ID. For 
the info key, the number of key versions is the number of the key info entries. 
Thank you.

> Ozone: Container : Add key versioning support
> ---------------------------------------------
>
>                 Key: HDFS-12000
>                 URL: https://issues.apache.org/jira/browse/HDFS-12000
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ozone
>    Affects Versions: HDFS-7240
>            Reporter: Anu Engineer
>            Assignee: Chen Liang
>
> The rest interface of ozone supports versioning of keys. This support comes 
> from the containers and how chunks are managed to support this feature. This 
> JIRA tracks that feature. Will post a detailed design doc so that we can talk 
> about this feature.



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