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https://issues.apache.org/jira/browse/AMBARI-22679?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16302049#comment-16302049
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Dmytro Grinenko commented on AMBARI-22679:
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[~adoroszlai] it caused coz someone merged them from trunk to 2.6 and when my
patch were merged back to trunk those imports were affected. Should be same
style check be implement for 2.6?
Meanwhile issue affecting only trunk, while 2.6 is fine.
> RU: Service action failed with NullPointer on Downgrade after RU
> ----------------------------------------------------------------
>
> Key: AMBARI-22679
> URL: https://issues.apache.org/jira/browse/AMBARI-22679
> Project: Ambari
> Issue Type: Bug
> Components: ambari-sever
> Affects Versions: trunk, 2.6.2
> Reporter: Dmytro Grinenko
> Assignee: Dmytro Grinenko
> Priority: Critical
> Fix For: trunk, 2.6.2
>
> Attachments: AMBARI-22679.branch-2.6.patch, AMBARI-22679.trunk.patch
>
>
> STR:
> - Install Ambari
> - Deploy HDP 2.5 with HDFS HA, YARN, MR, ZK
> - Install HDP 2.6 stack
> - Upgrade stack, on finalization initiate downgrade.
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