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https://issues.apache.org/jira/browse/HDDS-3499?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17110144#comment-17110144
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Li Cheng commented on HDDS-3499:
--------------------------------

[~elek] Hey Marton, our production cluster is pending on this Jira for future 
upgrade. We are expecting an upgrade recently. Would you like to share some 
progress here?

> Address compatibility issue by SCM DB instances change
> ------------------------------------------------------
>
>                 Key: HDDS-3499
>                 URL: https://issues.apache.org/jira/browse/HDDS-3499
>             Project: Hadoop Distributed Data Store
>          Issue Type: Bug
>            Reporter: Li Cheng
>            Assignee: Marton Elek
>            Priority: Blocker
>
> After https://issues.apache.org/jira/browse/HDDS-3172, SCM now has one single 
> rocksdb instance instead of multiple db instances. 
> For running Ozone cluster, we need to address compatibility issues. One 
> possible way is to have a side-way tool to migrate old metadata from multiple 
> dbs to current single db.



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