[AMBARI-18415] Stack definition: service component 'cardinality' inheritance not working properly - ASF JIRA

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Details

Type: Bug
Status: Resolved
Priority: Major
Resolution: Fixed
Affects Version/s: None
Fix Version/s: 2.5.0
Component/s: None
Labels:
None

Description

In the stack definition if a property of service component is not defined in
one specific version than it will be inherited from the parent version.

The `ComponentInfo.cardinality` always has a default value of "0+" from the
moment the object is instantiated thus the inheritance logic is never applied.
This leads to if a specific version of a service component doesn't have a
property set in stack definition it won't inherit it from its parent but
rather will take the "0+" default value.

This is not the correct behaviour. First the inheritance should be applied and
only set `cardinality` to "0+" only if it can't be inherited from the parents
(as it's not defined in any of the parents up in the inheritance chain)