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https://issues.apache.org/jira/browse/NIFIREG-232?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16790615#comment-16790615
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Joseph Witt commented on NIFIREG-232:
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this appears resolved but not merged?
> Support in-place migration between flow persistence providers
> -------------------------------------------------------------
>
> Key: NIFIREG-232
> URL: https://issues.apache.org/jira/browse/NIFIREG-232
> Project: NiFi Registry
> Issue Type: New Feature
> Reporter: Bryan Rosander
> Assignee: Bryan Rosander
> Priority: Major
> Fix For: 0.4.0
>
> Time Spent: 2.5h
> Remaining Estimate: 0h
>
> It would be nice to be able to switch flow persistence providers without
> losing state.
>
> Current documentation says that this is not possible:
> "In order to switch the Persistence Provider to use, it is necessary to reset
> NiFi Registry."
>
> I think we should be able to support this via a nifi-registry toolkit that
> reads from the old provider, writes to a new one.
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