// add cluster {clusterName}
ZkClient zkclient =
new ZkClient(zkAddr, ZkClient.DEFAULT_SESSION_TIMEOUT, ZkClient.DEFAULT_CONNECTION_TIMEOUT,
new ZNRecordSerializer());
ZKHelixAdmin admin = new ZKHelixAdmin(zkclient);
admin.addCluster(clusterName, true);
// add MasterSlave state mode definition
admin.addStateModelDef(clusterName, "MasterSlave", new StateModelDefinition(
StateModelConfigGenerator.generateConfigForMasterSlave()));
// add 3 participants: "localhost:{12918, 12919, 12920}"
for (int i = 0; i < 3; i++) {
int port = 12918 + i;
InstanceConfig config = new InstanceConfig("localhost_" + port);
config.setHostName("localhost");
config.setPort(Integer.toString(port));
config.setInstanceEnabled(true);
admin.addInstance(clusterName, config);
}
// add resource "TestDB" which has 4 partitions and uses MasterSlave state model
String resourceName = "TestDB";
if (idealStateRebalancerMode == RebalanceMode.SEMI_AUTO
|| idealStateRebalancerMode == RebalanceMode.FULL_AUTO) {
admin.addResource(clusterName, resourceName, 4, "MasterSlave", idealStateRebalancerModeStr);
// rebalance resource "TestDB" using 3 replicas
admin.rebalance(clusterName, resourceName, 3);
} else if (idealStateRebalancerMode == RebalanceMode.CUSTOMIZED) {
admin.addIdealState(clusterName, resourceName, idealStateJsonFile);
}
// start helix controller
new Thread(new Runnable() {