[YARN-7152] [ATSv2] Registering timeline client before AMRMClient service init throw exception.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.0.0-beta1, YARN-5355_branch2, 3.1.0
• Component/s: timelineclient
• Hadoop Flags: Reviewed
• Assignee: Rohith Sharma K S
• Reporter: Rohith Sharma K S
• Created: 04/Sep/17 08:14
• Updated: 24/Apr/18 20:55
• Resolved: 04/Sep/17 14:54

Description

It is observed that registering timeline v2 client with AMRMClient before serviceInit throw exception in AppMaster. This causes AppMaster start up failure.

Caused by: org.apache.hadoop.yarn.exceptions.YarnException: register timeline v2 client when not configured.
	at org.apache.hadoop.yarn.client.api.AMRMClient.registerTimelineV2Client(AMRMClient.java:708)
	at org.apache.hadoop.yarn.client.api.async.AMRMClientAsync.registerTimelineV2Client(AMRMClientAsync.java:354)

AMRMClient should not assume that timeline client will be registered only after serviceInit. In composite service model, this will be a issue.