/// <summary>Monitor the submitted application for completion.</summary>
/// <remarks>
/// Monitor the submitted application for completion.
/// Kill application if time expires.
/// </remarks>
/// <param name="appId">Application Id of application to be monitored</param>
/// <returns>true if application completed successfully</returns>
/// <exception cref="Org.Apache.Hadoop.Yarn.Exceptions.YarnException"/>
/// <exception cref="System.IO.IOException"/>
private bool MonitorApplication(ApplicationId appId)
{
while (true)
{
// Check app status every 1 second.
try
{
Sharpen.Thread.Sleep(1000);
}
catch (Exception)
{
Log.Debug("Thread sleep in monitoring loop interrupted");
}
// Get application report for the appId we are interested in
ApplicationReport report = yarnClient.GetApplicationReport(appId);
Log.Info("Got application report from ASM for" + ", appId=" + appId.GetId() + ", clientToAMToken="
+ report.GetClientToAMToken() + ", appDiagnostics=" + report.GetDiagnostics() +
", appMasterHost=" + report.GetHost() + ", appQueue=" + report.GetQueue() + ", appMasterRpcPort="
+ report.GetRpcPort() + ", appStartTime=" + report.GetStartTime() + ", yarnAppState="
+ report.GetYarnApplicationState().ToString() + ", distributedFinalState=" + report
.GetFinalApplicationStatus().ToString() + ", appTrackingUrl=" + report.GetTrackingUrl
() + ", appUser="******"Application has completed successfully. Breaking monitoring loop");
return(true);
}
else
{
Log.Info("Application did finished unsuccessfully." + " YarnState=" + state.ToString
() + ", DSFinalStatus=" + dsStatus.ToString() + ". Breaking monitoring loop");
return(false);
}
}
else
{
if (YarnApplicationState.Killed == state || YarnApplicationState.Failed == state)
{
Log.Info("Application did not finish." + " YarnState=" + state.ToString() + ", DSFinalStatus="
+ dsStatus.ToString() + ". Breaking monitoring loop");
return(false);
}
}
if (Runtime.CurrentTimeMillis() > (clientStartTime + clientTimeout))
{
Log.Info("Reached client specified timeout for application. Killing application");
ForceKillApplication(appId);
return(false);
}
}
}
private string ClairfyAppFinalStatus(FinalApplicationStatus status)
{
if (status == FinalApplicationStatus.Undefined)
{
return("Application has not completed yet.");
}
return(status.ToString());
}
/// <exception cref="System.IO.IOException"/>
/// <exception cref="Org.Apache.Hadoop.Yarn.Exceptions.YarnException"/>
public virtual bool Run()
{
Log.Info("Starting Client");
// Connect to ResourceManager
rmClient.Start();
try
{
// Create launch context for app master
Log.Info("Setting up application submission context for ASM");
ApplicationSubmissionContext appContext = rmClient.CreateApplication().GetApplicationSubmissionContext
();
ApplicationId appId = appContext.GetApplicationId();
// set the application name
appContext.SetApplicationName(appName);
// Set the priority for the application master
Priority pri = Org.Apache.Hadoop.Yarn.Util.Records.NewRecord <Priority>();
pri.SetPriority(amPriority);
appContext.SetPriority(pri);
// Set the queue to which this application is to be submitted in the RM
appContext.SetQueue(amQueue);
// Set up the container launch context for the application master
ContainerLaunchContext amContainer = Org.Apache.Hadoop.Yarn.Util.Records.NewRecord
<ContainerLaunchContext>();
appContext.SetAMContainerSpec(amContainer);
// unmanaged AM
appContext.SetUnmanagedAM(true);
Log.Info("Setting unmanaged AM");
// Submit the application to the applications manager
Log.Info("Submitting application to ASM");
rmClient.SubmitApplication(appContext);
ApplicationReport appReport = MonitorApplication(appId, EnumSet.Of(YarnApplicationState
.Accepted, YarnApplicationState.Killed, YarnApplicationState.Failed, YarnApplicationState
.Finished));
if (appReport.GetYarnApplicationState() == YarnApplicationState.Accepted)
{
// Monitor the application attempt to wait for launch state
ApplicationAttemptReport attemptReport = MonitorCurrentAppAttempt(appId, YarnApplicationAttemptState
.Launched);
ApplicationAttemptId attemptId = attemptReport.GetApplicationAttemptId();
Log.Info("Launching AM with application attempt id " + attemptId);
// launch AM
LaunchAM(attemptId);
// Monitor the application for end state
appReport = MonitorApplication(appId, EnumSet.Of(YarnApplicationState.Killed, YarnApplicationState
.Failed, YarnApplicationState.Finished));
}
YarnApplicationState appState = appReport.GetYarnApplicationState();
FinalApplicationStatus appStatus = appReport.GetFinalApplicationStatus();
Log.Info("App ended with state: " + appReport.GetYarnApplicationState() + " and status: "
+ appStatus);
bool success;
if (YarnApplicationState.Finished == appState && FinalApplicationStatus.Succeeded
== appStatus)
{
Log.Info("Application has completed successfully.");
success = true;
}
else
{
Log.Info("Application did finished unsuccessfully." + " YarnState=" + appState.ToString
() + ", FinalStatus=" + appStatus.ToString());
success = false;
}
return(success);
}
finally
{
rmClient.Stop();
}
}
/*
* FinalApplicationStatus
*/
public static YarnProtos.FinalApplicationStatusProto ConvertToProtoFormat(FinalApplicationStatus
e)
{
return(YarnProtos.FinalApplicationStatusProto.ValueOf(FinalApplicationStatusPrefix
+ e.ToString()));
}