4.2. On the core slave node, upgrade the YARN NodeManager

Shut down the current NodeManager process, switch to the new version, and start the new NodeManager process:

su - yarn -c "/usr/hdp/current/hadoop-yarn-nodemanager/sbin/yarn-daemon.sh stop nodemanager"

hdp-select set hadoop-yarn-nodemanager 2.2.6.0-2800

su - yarn -c "/usr/hdp/current/hadoop-yarn-nodemanager/sbin/yarn-daemon.sh start nodemanager"

To verify that the NodeManager joined the cluster, check the status of the node:

su - yarn -c "yarn node -list"

Make sure that the node is listed as running. For example:

[yarn@node-1 ~]$ yarn node -list
15/02/24 18:17:20 INFO impl.TimelineClientImpl: Timeline service address: 
http://node-1.example.com:8188/ws/v1/timeline/
15/02/24 18:17:20 INFO client.RMProxy: Connecting to ResourceManager at 
node-1.example.com/240.0.0.10:8032
Total Nodes:1
Node-Id                  Node-State Node-Http-Address          Number-of-Running-Containers
node-1.example.com:45454 RUNNING    node-1.example.com:50060   0