I have HA Configured Name node service and Journal node runs on 3 nodes(all 3 are Data Nodes in our clusters)
I have to remove one of the data node for maintenance and apparently that was acting as journal node too.
Once I stop all the services from that data node, I see Name node services are going down.
COuld you please help me to understand why Name node is going down ?
Also I need to do maintenance on that node, with out name node going down. let me know what steps I need to follow
@Kumar Veerappan, The name node should be up if 2/3 journal nodes are alive. The name node is expected to shutdown if 2 or more journal nodes are stopped.
Can you please check how many journal nodes were alive when namenode shutdown happen ? Also check the error stack trace from name node log to help root cause the issue.