[YARN-8483] Logs in FederationInterceptorREST should give some information on the exception

• Type: Improvement
• Status: Patch Available
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 2.9.1
• Assignee: Íñigo Goiri
• Reporter: Íñigo Goiri
• Created: 29/Jun/18 21:14
• Updated: 30/Jun/18 04:02

Description

When there is an error collecting the data from the subclusters, there is not details:
FederationInterceptorREST #3 org.apache.hadoop.yarn.server.router.webapp.FederationInterceptorREST: Subcluster 1 failed to return nodesInfo.
FederationInterceptorREST #2 org.apache.hadoop.yarn.server.router.webapp.FederationInterceptorREST: Subcluster 0 failed to return nodesInfo.

We should add the message for the exception.