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

[#1]

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 ??

[#2 · Accepted solution]

@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

[#3]

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