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https://issues.apache.org/jira/browse/PHOENIX-3166?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15416297#comment-15416297
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James Taylor commented on PHOENIX-3166:
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[~churromorales] - interested?
> Snapshot SYSTEM.CATALOG before performing upgrade
> -------------------------------------------------
>
> Key: PHOENIX-3166
> URL: https://issues.apache.org/jira/browse/PHOENIX-3166
> Project: Phoenix
> Issue Type: Bug
> Reporter: James Taylor
>
> We should snapshot the SYSTEM.CATALOG before running the upgrade and restore
> to the snapshot in the event of a problem. Worst case, if connectivity to
> HBase goes down midway through the upgrade, we'll at least have the snapshot
> available to restore back in an emergency.
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