Error Getting Output From ICloudTask

Question

I went through the Azure Batch Tutorial for .NET and am having issues with getting the output from the ICloudTask. After waiting for the tasks to complete I have the coded below:
foreach (ICloudTask task in listjob.ListTasks())
string taskFileContent = task.GetTaskFile(Constants.StandardOutFileName).ReadAsString();
Console.WriteLine("Task " + task.Name + " says:\n" + taskFileContent);
It throws a System.AggregateException on task.GetTaskFile with an inner exception of:
{"The remote server returned an error: (404) Not Found."}
I did some research but haven't been able to determine why I am getting this error?

Answer 1

I see in the sample that the second use of TaskStateMonitor (TSM) does not check for timeout...  We will add this and you might want too as well.  
If the TSM times out you might want to confirm the pool has VMs and that they reach TVMState.Idle (i.e.: are available to run tasks).
You do not mention the exact task state you see but it is possible for a task to be in the TaskState.Completed state and still not have a stdout.txt file.
You could list the files with ICloudTask.ListTaskFiles(recursive: true) to see what files are actually there.
Also you can check the exit code (ICloudTask.TaskExecutionInformation.ExitCode) and/or the the TaskSchedulingError (ICloudTask.TaskExecutionInformation.SchedulingErrro) to see if the task ran correctly.
daryl
ps: don't forget to ToString() the inner BatchException.  I posted to the forum earlier on this and there are data in the exception that can tell you more than "not found"...