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https://issues.apache.org/jira/browse/HBASE-22010?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16787572#comment-16787572
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Guanghao Zhang commented on HBASE-22010:
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+1
> docs on upgrade from 2.0,2.1 -> 2.2 renders incorrectly
> -------------------------------------------------------
>
> Key: HBASE-22010
> URL: https://issues.apache.org/jira/browse/HBASE-22010
> Project: HBase
> Issue Type: Bug
> Components: documentation
> Affects Versions: 3.0.0, 2.2.0
> Reporter: Sean Busbey
> Assignee: Sean Busbey
> Priority: Minor
> Attachments: HBASE-22010.0.patch
>
>
> heading doesn't work, which also means no linking to it.
> the rendered page has an unrendered bit, e.g.
> {code}
> [[upgrade 2.2]] === Upgrade from 2.0 or 2.1 to 2.2+
> HBase 2.2+ uses a new Procedure form assiging/unassigning/moving Regions. It
> does not process HBase 2.1 and 2.0’s Unassign/Assign Procedure types. Upgrade
> requires that we first drain the Master Procedure Store of old style
> Procedures before starting the new 2.2 Master. So you need to make sure that
> before you kill the old version (2.0 or 2.1) Master, there is no region in
> transition. And once the new version (2.2+) Master is up, you can rolling
> upgrade RegionServers one by one.
> {code}
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