@Test
public void testInvalidNMUnregistration() throws Exception {
Configuration conf = new Configuration();
rm = new MockRM(conf);
rm.start();
ResourceTrackerService resourceTrackerService = rm.getResourceTrackerService();
int shutdownNMsCount = ClusterMetrics.getMetrics().getNumShutdownNMs();
int decommisionedNMsCount = ClusterMetrics.getMetrics().getNumDecommisionedNMs();
// Node not found for unregister
UnRegisterNodeManagerRequest request = Records.newRecord(UnRegisterNodeManagerRequest.class);
request.setNodeId(BuilderUtils.newNodeId("host", 1234));
resourceTrackerService.unRegisterNodeManager(request);
checkShutdownNMCount(rm, 0);
checkDecommissionedNMCount(rm, 0);
// 1. Register the Node Manager
// 2. Exclude the same Node Manager host
// 3. Give NM heartbeat to RM
// 4. Unregister the Node Manager
MockNM nm1 = new MockNM("host1:1234", 5120, resourceTrackerService);
RegisterNodeManagerResponse response = nm1.registerNode();
Assert.assertEquals(NodeAction.NORMAL, response.getNodeAction());
writeToHostsFile("host2");
conf.set(YarnConfiguration.RM_NODES_INCLUDE_FILE_PATH, hostFile.getAbsolutePath());
rm.getNodesListManager().refreshNodes(conf);
NodeHeartbeatResponse heartbeatResponse = nm1.nodeHeartbeat(true);
Assert.assertEquals(NodeAction.SHUTDOWN, heartbeatResponse.getNodeAction());
checkShutdownNMCount(rm, shutdownNMsCount);
checkDecommissionedNMCount(rm, ++decommisionedNMsCount);
request.setNodeId(nm1.getNodeId());
resourceTrackerService.unRegisterNodeManager(request);
checkShutdownNMCount(rm, shutdownNMsCount);
checkDecommissionedNMCount(rm, decommisionedNMsCount);
// 1. Register the Node Manager
// 2. Exclude the same Node Manager host
// 3. Unregister the Node Manager
MockNM nm2 = new MockNM("host2:1234", 5120, resourceTrackerService);
RegisterNodeManagerResponse response2 = nm2.registerNode();
Assert.assertEquals(NodeAction.NORMAL, response2.getNodeAction());
writeToHostsFile("host1");
conf.set(YarnConfiguration.RM_NODES_INCLUDE_FILE_PATH, hostFile.getAbsolutePath());
rm.getNodesListManager().refreshNodes(conf);
request.setNodeId(nm2.getNodeId());
resourceTrackerService.unRegisterNodeManager(request);
checkShutdownNMCount(rm, shutdownNMsCount);
checkDecommissionedNMCount(rm, ++decommisionedNMsCount);
}
@Test
public void testUnhealthyNMUnregistration() throws Exception {
Configuration conf = new Configuration();
rm = new MockRM(conf);
rm.start();
ResourceTrackerService resourceTrackerService = rm.getResourceTrackerService();
MockNM nm1 = rm.registerNode("host1:1234", 5120);
Assert.assertEquals(0, ClusterMetrics.getMetrics().getUnhealthyNMs());
// node healthy
nm1.nodeHeartbeat(true);
int shutdownNMsCount = ClusterMetrics.getMetrics().getNumShutdownNMs();
// node unhealthy
nm1.nodeHeartbeat(false);
checkUnealthyNMCount(rm, nm1, true, 1);
UnRegisterNodeManagerRequest request = Records.newRecord(UnRegisterNodeManagerRequest.class);
request.setNodeId(nm1.getNodeId());
resourceTrackerService.unRegisterNodeManager(request);
checkShutdownNMCount(rm, ++shutdownNMsCount);
}
@Test
public void testNMUnregistration() throws Exception {
Configuration conf = new Configuration();
rm = new MockRM(conf);
rm.start();
ResourceTrackerService resourceTrackerService = rm.getResourceTrackerService();
MockNM nm1 = rm.registerNode("host1:1234", 5120);
int shutdownNMsCount = ClusterMetrics.getMetrics().getNumShutdownNMs();
NodeHeartbeatResponse nodeHeartbeat = nm1.nodeHeartbeat(true);
Assert.assertTrue(NodeAction.NORMAL.equals(nodeHeartbeat.getNodeAction()));
UnRegisterNodeManagerRequest request = Records.newRecord(UnRegisterNodeManagerRequest.class);
request.setNodeId(nm1.getNodeId());
resourceTrackerService.unRegisterNodeManager(request);
checkShutdownNMCount(rm, ++shutdownNMsCount);
// The RM should remove the node after unregistration, hence send a reboot
// command.
nodeHeartbeat = nm1.nodeHeartbeat(true);
Assert.assertTrue(NodeAction.RESYNC.equals(nodeHeartbeat.getNodeAction()));
}
