protected internal virtual void Unregister()
{
try
{
DoUnregistration();
}
catch (Exception are)
{
Log.Error("Exception while unregistering ", are);
// if unregistration failed, isLastAMRetry needs to be recalculated
// to see whether AM really has the chance to retry
MRAppMaster.RunningAppContext raContext = (MRAppMaster.RunningAppContext)context;
raContext.ResetIsLastAMRetry();
}
}
protected internal virtual void DoUnregistration()
{
FinalApplicationStatus finishState = FinalApplicationStatus.Undefined;
JobImpl jobImpl = (JobImpl)job;
if (jobImpl.GetInternalState() == JobStateInternal.Succeeded)
{
finishState = FinalApplicationStatus.Succeeded;
}
else
{
if (jobImpl.GetInternalState() == JobStateInternal.Killed || (jobImpl.GetInternalState
() == JobStateInternal.Running && isSignalled))
{
finishState = FinalApplicationStatus.Killed;
}
else
{
if (jobImpl.GetInternalState() == JobStateInternal.Failed || jobImpl.GetInternalState
() == JobStateInternal.Error)
{
finishState = FinalApplicationStatus.Failed;
}
}
}
StringBuilder sb = new StringBuilder();
foreach (string s in job.GetDiagnostics())
{
sb.Append(s).Append("\n");
}
Log.Info("Setting job diagnostics to " + sb.ToString());
string historyUrl = MRWebAppUtil.GetApplicationWebURLOnJHSWithScheme(GetConfig(),
context.GetApplicationID());
Log.Info("History url is " + historyUrl);
FinishApplicationMasterRequest request = FinishApplicationMasterRequest.NewInstance
(finishState, sb.ToString(), historyUrl);
try
{
while (true)
{
FinishApplicationMasterResponse response = scheduler.FinishApplicationMaster(request
);
if (response.GetIsUnregistered())
{
// When excepting ClientService, other services are already stopped,
// it is safe to let clients know the final states. ClientService
// should wait for some time so clients have enough time to know the
// final states.
MRAppMaster.RunningAppContext raContext = (MRAppMaster.RunningAppContext)context;
raContext.MarkSuccessfulUnregistration();
break;
}
Log.Info("Waiting for application to be successfully unregistered.");
Sharpen.Thread.Sleep(rmPollInterval);
}
}
catch (ApplicationMasterNotRegisteredException)
{
// RM might have restarted or failed over and so lost the fact that AM had
// registered before.
Register();
DoUnregistration();
}
}