YARN-8296. Removed unique_component_support from YARN services.

Contributed by Suma Shivaprasad

(cherry picked from commit 2f2dd22aad)

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services-api/src/main/resources/definition/YARN-Services-Examples.md

@@ -221,7 +221,6 @@ POST URL - http://localhost:8088:/app/v1/services/hbase-app-1
     {
       "name": "regionserver",
       "number_of_containers": 3,
-      "unique_component_support": "true",
       "artifact": {
         "id": "hbase:latest",
         "type": "DOCKER"

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/markdown/yarn-service/YarnServiceAPI.md

@@ -220,7 +220,7 @@ One or more components of the service. If the service is HBase say, then the com
 
 |Name|Description|Required|Schema|Default|
 |----|----|----|----|----|
-|name|Name of the service component (mandatory). If Registry DNS is enabled, the max length is 63 characters. If unique component support is enabled, the max length is lowered to 44 characters.|true|string||
+|name|Name of the service component (mandatory). If Registry DNS is enabled, the max length is 44 characters.|true|string||
 |state|The state of the component|false|ComponentState||
 |dependencies|An array of service components which should be in READY state (as defined by readiness check), before this component can be started. The dependencies across all components of a service should be represented as a DAG.|false|string array||
 |readiness_check|Readiness check for this component.|false|ReadinessCheck||
@@ -638,7 +638,6 @@ POST URL - http://localhost:8088:/app/v1/services/hbase-app-1
     {
       "name": "regionserver",
       "number_of_containers": 3,
-      "unique_component_support": "true",
       "artifact": {
         "id": "hbase:latest",
         "type": "DOCKER"

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/models/yarn-servicedef.js

@@ -65,7 +65,6 @@ export default DS.Model.extend({
       artifactType: 'DOCKER',
       launchCommand: '',
       dependencies: [],
-      uniqueComponentSupport: false,
       configuration: null
     });
   },
@@ -199,9 +198,6 @@ export default DS.Model.extend({
       cpus: record.get('cpus'),
       memory: record.get('memory')
     };
-    if (record.get('uniqueComponentSupport')) {
-      json['unique_component_support'] = "true";
-    }
     if (record.get('configuration')) {
       json['configuration'] = record.get('configuration');
     }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/templates/components/service-component-table.hbs

@@ -97,12 +97,6 @@
           <label class="required">Launch Command</label>
           {{input type="text" class="form-control" value=currentComponent.launchCommand}}
         </div>
-        <div class="form-group">
-          <label class="checkbox-inline">
-            {{input type="checkbox" checked=currentComponent.uniqueComponentSupport}}
-            Unique Component Support
-          </label>
-        </div>
       </div>
       <div class="modal-footer">
         <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>