question Re: Decommissioned node, Decommission status of Node in NameNode UI status is different from RM UI in Archives of Support Questions (Read Only)

Decommissioned node, Decommission status of Node in NameNode UI status is different from RM UI

dhirajk — Fri, 04 Aug 2017 21:12:26 GMT

I have decommissioned Node(DataNode and NodeManager) using Ambari, After decommission is successful. The status in NameNode UI and RM UI got updated saying:

NameNode - "DeadNodes : 3 (Decommissioned)"

RM UI - "Decommissioned Nodes 3"

Later I had deleted Decommissioned Nodes from Ambari.

At present, NameNode UI status got updated saying:

NameNode - "DeadNodes : 0 (Decommissioned)"

But RM UI is still remained same:

RM UI - "Decommissioned Nodes 3"

is there any Amber UI issue ?? or do I need to perform any additional steps ??

Re: Decommissioned node, Decommission status of Node in NameNode UI status is different from RM UI

bandarusridhar1 — Tue, 08 Aug 2017 04:25:10 GMT

@Dhiraj

Update the ResourceManager with the new set of NodeManagers. On the ResourceManager host machine, execute the following command:

su <YARN_USER>
yarn rmadmin -refreshNodes

where <YARN_USER> is the user who owns the YARN services, for example, yarn.

Hope this helps you. Link

Re: Decommissioned node, Decommission status of Node in NameNode UI status is different from RM UI

dhirajk — Tue, 08 Aug 2017 04:31:13 GMT

Thanks for the comment @Sridhar Reddy, will let you once i try this.