[SOLR-13366] AutoScalingConfig 'Invalid stage name' warnings after upgrade

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 7.7.2, 8.1, master (9.0)
• Component/s: AutoScaling
• Assignee: Christine Poerschke
• Reporter: Christine Poerschke
• Created: 03/Apr/19 15:48
• Updated: 05/Jun/19 21:30
• Resolved: 03/May/19 16:56

Description

I noticed WARNings like this in some of our logs:

... OverseerAutoScalingTriggerThread ... o.a.s.c.s.c.a.AutoScalingConfig Invalid stage name '.auto_add_replicas.system' in listener config, skipping: {beforeAction=[], afterAction=[], trigger=.auto_add_replicas, stage=[WAITING, STARTED, ABORTED, SUCCEEDED, FAILED, BEFORE_ACTION, AFTER_ACTION], class=org.apache.solr.cloud.autoscaling.SystemLogListener}

After some detective work I think I've tracked this down to 7.1.0 TriggerEventProcessorStage having a WAITING stage and that stage having been removed in 7.2.0 TriggerEventProcessorStage via the SOLR-11320 changes. Haven't tried to reproduce it but my theory is that the listener got auto-created (with the WAITING stage) when the cloud was running pre-7.2.0 code and then after upgrading the warnings start to appear.

Issue Links

• is related to: SOLR-11320 Lock autoscaling triggers when changes they requested are being made