[FLINK-20411] The annotation config do not support complex structure

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Information Provided
• Affects Version/s: 1.11.2
• Component/s: Deployment / Kubernetes
• Assignee: Unassigned
• Reporter: WenJun Min
• Created: 29/Nov/20 05:26
• Updated: 01/Dec/20 09:35
• Resolved: 01/Dec/20 09:35

Description

Now we support user to set annotations by these config, the format is "k1:v1,k2:v2".

1. kubernetes.rest-service.annotations 
2. kubernetes.jobmanager.annotations
3. kubernetes.taskmanager.annotations

But the annotation may be more complex structure like "k1:{"a1":"v1","a2":"v2"},k2:{"a1":"v1","a2":"v2"}", It can not be parsed. 

Shall we support annotation and labels just like the environment variables use a prefix split mechanism, like :

1. kubernetes.rest-service.annotation.k1="{"a1":"v1","a2":"v2"}"

By this we can set some default cluster annotations and labels and no need to worry about overridden by user config.