Components in HBase on YARN

You can specify the following components (also referred to as "roles") when deploying HBase on YARN via Slider:

HBASE_MASTER ⎯ This corresponds to HBase master process.
HBASE_REGIONSERVER ⎯ This corresponds to region server process.
HBASE_REST ⎯ This corresponds to REST (aka Stargate) gateway.
HBASE_THRIFT ⎯ This corresponds to Thrift gateway.
HBASE_THRIFT2 ⎯ This corresponds to Thrift2 gateway.

The following is a sample resources.json file with each of these roles configured:

{
   "schema": "http://example.org/specification/v2.0.0",
   "metadata": {
   },
   "global": {
          "yarn.log.include.patterns": "",
          "yarn.log.exclude.patterns": "",
          "yarn.log.interval": "0"
   },
   "components": {
          "HBASE_MASTER": {
          "yarn.role.priority": "1",
          "yarn.component.instances": "1"
          },
          "slider-appmaster": {
          },
          "HBASE_REGIONSERVER": {
          "yarn.role.priority": "2",
          "yarn.component.instances": "4"
          },
          "HBASE_THRIFT": {
          "yarn.role.priority": "4",
          "yarn.component.instances": "1",
          "yarn.memory": "256"
          },
          "HBASE_THRIFT2": {
          "yarn.role.priority": "5",
          "yarn.component.instances": "0",
          "yarn.memory": "256"
          },
          "HBASE_REST": {
          "yarn.role.priority": "3",
          "yarn.component.instances": "1",
          "yarn.memory": "256"
          }
     }
}

	Note
	Thrift and Thrift2 provide similar functionality. You should use either Thrift or Thrift2, but not both.

​Components in HBase on YARN

Components in HBase on YARN