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https://issues.apache.org/jira/browse/HDFS-3744?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Karthik Kambatla updated HDFS-3744:
-----------------------------------
Fix Version/s: (was: 2.5.0)
> Decommissioned nodes are included in cluster after switch which is not
> expected
> -------------------------------------------------------------------------------
>
> Key: HDFS-3744
> URL: https://issues.apache.org/jira/browse/HDFS-3744
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: ha
> Affects Versions: 2.0.0-alpha, 3.0.0, 2.0.1-alpha, 2.1.0-beta
> Reporter: Brahma Reddy Battula
> Assignee: Vinayakumar B
> Attachments: HDFS-3744.patch
>
>
> Scenario:
> =========
> Start ANN and SNN with three DN's
> Exclude DN1 from cluster by using decommission feature
> (./hdfs dfsadmin -fs hdfs://ANNIP:8020 -refreshNodes)
> After decommission successful,do switch such that SNN will become Active.
> Here exclude node(DN1) is included in cluster.Able to write files to excluded
> node since it's not excluded.
> Checked SNN(Which Active before switch) UI decommissioned=1 and ANN UI
> decommissioned=0
> One more Observation:
> ====================
> All dfsadmin commands will create proxy only on nn1 irrespective of Active or
> standby.I think this also we need to re-look once..
> I am not getting , why we are not given HA for dfsadmin commands..?
> Please correct me,,If I am wrong.
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