[YARN-7836] YARN Service component update PUT API should not use component name from JSON body

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.1.0
• Component/s: api, yarn-native-services
• Target Version/s: 3.1.0
• Assignee: Gour Saha
• Reporter: Gour Saha
• Created: 28/Jan/18 03:38
• Updated: 22/Feb/18 21:36
• Resolved: 22/Feb/18 21:20

Description

The YARN Service PUT API for component update should not use component name from the JSON body. The component update PUT URI is as follows -
http://localhost:9191/app/v1/services/<service_name>/components/<comp_name>
e.g. http://localhost:9191/app/v1/services/hello-world/components/hello

The component name is already in the URI, hence the JSON body expected should be only -

{
    "number_of_containers": 3
}

It should not expect the name attribute in the JSON body. In fact, if the JSON body contains a name attribute with value anything other than the <comp_name> in the path param, we should send a 400 bad request saying they do not match. If they are the same, it should be okay and we can process the request.