[SOLR-12466] Autoscaling properties does not revert back to default when set to null

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Won't Fix
• Component/s: AutoScaling
• Assignee: Unassigned
• Reporter: Varun Thacker
• Created: 07/Jun/18 19:24
• Updated: 14/Aug/21 01:33
• Resolved: 14/Aug/21 01:33

Description

1. By default the metrics get queried every 1 second

2. Now I change it to 5 second via this API and this works

curl -X POST -H 'Content-type:application/json' --data-binary '{ "set-properties": { "triggerScheduleDelaySeconds": 1 } }' http://localhost:8983/solr/admin/autoscaling

3. I want to change it back to the default, so I applied null but that didn't work ( the metrics is still getting queried at 5 second interval and not 1 second).  Explicitly setting it to 1 works 

curl -X POST -H 'Content-type:application/json' --data-binary '{ "set-properties": { "triggerScheduleDelaySeconds": null } }' http://localhost:8983/solr/admin/autoscaling

Issue Links

• relates to: SOLR-11158 set-cluster-preferences & set-cluster-policy must accept null value to delete the entries
• supercedes: SOLR-12463 Search rate trigger should check metrics less often