// Other stuff is verified in the regular web-services related tests
/// <summary>Test to verify the following RM HA transitions to the following states.</summary>
/// <remarks>
/// Test to verify the following RM HA transitions to the following states.
/// 1. Standby: Should be a no-op
/// 2. Active: Active services should start
/// 3. Active: Should be a no-op.
/// While active, submit a couple of jobs
/// 4. Standby: Active services should stop
/// 5. Active: Active services should start
/// 6. Stop the RM: All services should stop and RM should not be ready to
/// become Active
/// </remarks>
/// <exception cref="System.Exception"/>
public virtual void TestFailoverAndTransitions()
{
configuration.SetBoolean(YarnConfiguration.AutoFailoverEnabled, false);
Configuration conf = new YarnConfiguration(configuration);
rm = new MockRM(conf);
rm.Init(conf);
HAServiceProtocol.StateChangeRequestInfo requestInfo = new HAServiceProtocol.StateChangeRequestInfo
(HAServiceProtocol.RequestSource.RequestByUser);
NUnit.Framework.Assert.AreEqual(StateErr, HAServiceProtocol.HAServiceState.Initializing
, rm.adminService.GetServiceStatus().GetState());
NUnit.Framework.Assert.IsFalse("RM is ready to become active before being started"
, rm.adminService.GetServiceStatus().IsReadyToBecomeActive());
CheckMonitorHealth();
rm.Start();
CheckMonitorHealth();
CheckStandbyRMFunctionality();
VerifyClusterMetrics(0, 0, 0, 0, 0, 0);
// 1. Transition to Standby - must be a no-op
rm.adminService.TransitionToStandby(requestInfo);
CheckMonitorHealth();
CheckStandbyRMFunctionality();
VerifyClusterMetrics(0, 0, 0, 0, 0, 0);
// 2. Transition to active
rm.adminService.TransitionToActive(requestInfo);
CheckMonitorHealth();
CheckActiveRMFunctionality();
VerifyClusterMetrics(1, 1, 1, 1, 2048, 1);
// 3. Transition to active - no-op
rm.adminService.TransitionToActive(requestInfo);
CheckMonitorHealth();
CheckActiveRMFunctionality();
VerifyClusterMetrics(1, 2, 2, 2, 2048, 2);
// 4. Transition to standby
rm.adminService.TransitionToStandby(requestInfo);
CheckMonitorHealth();
CheckStandbyRMFunctionality();
VerifyClusterMetrics(0, 0, 0, 0, 0, 0);
// 5. Transition to active to check Active->Standby->Active works
rm.adminService.TransitionToActive(requestInfo);
CheckMonitorHealth();
CheckActiveRMFunctionality();
VerifyClusterMetrics(1, 1, 1, 1, 2048, 1);
// 6. Stop the RM. All services should stop and RM should not be ready to
// become active
rm.Stop();
NUnit.Framework.Assert.AreEqual(StateErr, HAServiceProtocol.HAServiceState.Stopping
, rm.adminService.GetServiceStatus().GetState());
NUnit.Framework.Assert.IsFalse("RM is ready to become active even after it is stopped"
, rm.adminService.GetServiceStatus().IsReadyToBecomeActive());
NUnit.Framework.Assert.IsFalse("Active RM services are started", rm.AreActiveServicesRunning
());
CheckMonitorHealth();
}