Symptom

StackState v4.0.x and v4.1.x

StackState will not start after upgrading to a newer version. StackState.log reflects:

2019-07-31 13:14:27,139 [main] INFO com.stackstate.StackStateMainContext - StackState starting with graph database: default
2019-07-31 13:14:41,577 [main] WARN com.stackstate.WebApp$ - Unexpected error:
java.lang.IllegalStateException: Requested index specs do not match the catalog.
Either enable automaticReIndexOnStartup feature or apply the offline reindex command.
Diff (this = Requested; that = Catalog):
>> Only in this Spec:
- IndexSpecification(selectors=[SelectorSpecification(property=~label, value=ComponentType)], property=identifier, normalized=false, uniqueConstrained=true)
- IndexSpecification(selectors=[SelectorSpecification(property=~label, value=RelationMappingFunction)], property=identifier, normalized=false, uniqueConstrained=true)
...

Cause

Introduced index changes.

Solution

Follow the reindex process