/// <exception cref="Org.Apache.Hadoop.Yarn.Exceptions.YarnException"/>
protected internal override void SubmitApplication(ApplicationSubmissionContext submissionContext
, long submitTime, string user)
{
//Do nothing, just add the application to RMContext
RMAppImpl application = new RMAppImpl(submissionContext.GetApplicationId(), this.
rmContext, this.conf, submissionContext.GetApplicationName(), user, submissionContext
.GetQueue(), submissionContext, this.rmContext.GetScheduler(), this.rmContext.GetApplicationMasterService
(), submitTime, submissionContext.GetApplicationType(), submissionContext.GetApplicationTags
(), null);
this.rmContext.GetRMApps()[submissionContext.GetApplicationId()] = application;
}
/// <exception cref="Org.Apache.Hadoop.Yarn.Exceptions.YarnException"/>
private RMAppImpl CreateAndPopulateNewRMApp(ApplicationSubmissionContext submissionContext
, long submitTime, string user, bool isRecovery)
{
ApplicationId applicationId = submissionContext.GetApplicationId();
ResourceRequest amReq = ValidateAndCreateResourceRequest(submissionContext, isRecovery
);
// Create RMApp
RMAppImpl application = new RMAppImpl(applicationId, rmContext, this.conf, submissionContext
.GetApplicationName(), user, submissionContext.GetQueue(), submissionContext, this
.scheduler, this.masterService, submitTime, submissionContext.GetApplicationType
(), submissionContext.GetApplicationTags(), amReq);
// Concurrent app submissions with same applicationId will fail here
// Concurrent app submissions with different applicationIds will not
// influence each other
if (rmContext.GetRMApps().PutIfAbsent(applicationId, application) != null)
{
string message = "Application with id " + applicationId + " is already present! Cannot add a duplicate!";
Log.Warn(message);
throw new YarnException(message);
}
// Inform the ACLs Manager
this.applicationACLsManager.AddApplication(applicationId, submissionContext.GetAMContainerSpec
().GetApplicationACLs());
string appViewACLs = submissionContext.GetAMContainerSpec().GetApplicationACLs()[
ApplicationAccessType.ViewApp];
rmContext.GetSystemMetricsPublisher().AppACLsUpdated(application, appViewACLs, Runtime
.CurrentTimeMillis());
return(application);
}
/// <exception cref="System.Exception"/>
protected internal virtual void RecoverApplication(ApplicationStateData appState,
RMStateStore.RMState rmState)
{
ApplicationSubmissionContext appContext = appState.GetApplicationSubmissionContext
();
ApplicationId appId = appContext.GetApplicationId();
// create and recover app.
RMAppImpl application = CreateAndPopulateNewRMApp(appContext, appState.GetSubmitTime
(), appState.GetUser(), true);
application.Handle(new RMAppRecoverEvent(appId, rmState));
}
/// <exception cref="Org.Apache.Hadoop.Yarn.Exceptions.YarnException"/>
protected internal virtual void SubmitApplication(ApplicationSubmissionContext submissionContext
, long submitTime, string user)
{
ApplicationId applicationId = submissionContext.GetApplicationId();
RMAppImpl application = CreateAndPopulateNewRMApp(submissionContext, submitTime,
user, false);
ApplicationId appId = submissionContext.GetApplicationId();
if (UserGroupInformation.IsSecurityEnabled())
{
try
{
this.rmContext.GetDelegationTokenRenewer().AddApplicationAsync(appId, ParseCredentials
(submissionContext), submissionContext.GetCancelTokensWhenComplete(), application
.GetUser());
}
catch (Exception e)
{
Log.Warn("Unable to parse credentials.", e);
// Sending APP_REJECTED is fine, since we assume that the
// RMApp is in NEW state and thus we haven't yet informed the
// scheduler about the existence of the application
System.Diagnostics.Debug.Assert(application.GetState() == RMAppState.New);
this.rmContext.GetDispatcher().GetEventHandler().Handle(new RMAppEvent(applicationId
, RMAppEventType.AppRejected, e.Message));
throw RPCUtil.GetRemoteException(e);
}
}
else
{
// Dispatcher is not yet started at this time, so these START events
// enqueued should be guaranteed to be first processed when dispatcher
// gets started.
this.rmContext.GetDispatcher().GetEventHandler().Handle(new RMAppEvent(applicationId
, RMAppEventType.Start));
}
}
/// <exception cref="Org.Apache.Hadoop.Yarn.Exceptions.InvalidResourceRequestException
/// "/>
private ResourceRequest ValidateAndCreateResourceRequest(ApplicationSubmissionContext
submissionContext, bool isRecovery)
{
// Validation of the ApplicationSubmissionContext needs to be completed
// here. Only those fields that are dependent on RM's configuration are
// checked here as they have to be validated whether they are part of new
// submission or just being recovered.
// Check whether AM resource requirements are within required limits
if (!submissionContext.GetUnmanagedAM())
{
ResourceRequest amReq = submissionContext.GetAMContainerResourceRequest();
if (amReq == null)
{
amReq = BuilderUtils.NewResourceRequest(RMAppAttemptImpl.AmContainerPriority, ResourceRequest
.Any, submissionContext.GetResource(), 1);
}
// set label expression for AM container
if (null == amReq.GetNodeLabelExpression())
{
amReq.SetNodeLabelExpression(submissionContext.GetNodeLabelExpression());
}
try
{
SchedulerUtils.NormalizeAndValidateRequest(amReq, scheduler.GetMaximumResourceCapability
(), submissionContext.GetQueue(), scheduler, isRecovery, rmContext);
}
catch (InvalidResourceRequestException e)
{
Log.Warn("RM app submission failed in validating AM resource request" + " for application "
+ submissionContext.GetApplicationId(), e);
throw;
}
SchedulerUtils.NormalizeRequest(amReq, scheduler.GetResourceCalculator(), scheduler
.GetClusterResource(), scheduler.GetMinimumResourceCapability(), scheduler.GetMaximumResourceCapability
(), scheduler.GetMinimumResourceCapability());
return(amReq);
}
return(null);
}
public virtual void Setup()
{
// start minicluster
conf = new YarnConfiguration();
yarnCluster = new MiniYARNCluster(typeof(TestAMRMClient).FullName, nodeCount, 1,
1);
yarnCluster.Init(conf);
yarnCluster.Start();
NUnit.Framework.Assert.IsNotNull(yarnCluster);
NUnit.Framework.Assert.AreEqual(Service.STATE.Started, yarnCluster.GetServiceState
());
// start rm client
yarnClient = (YarnClientImpl)YarnClient.CreateYarnClient();
yarnClient.Init(conf);
yarnClient.Start();
NUnit.Framework.Assert.IsNotNull(yarnClient);
NUnit.Framework.Assert.AreEqual(Service.STATE.Started, yarnClient.GetServiceState
());
// get node info
nodeReports = yarnClient.GetNodeReports(NodeState.Running);
// submit new app
ApplicationSubmissionContext appContext = yarnClient.CreateApplication().GetApplicationSubmissionContext
();
ApplicationId appId = appContext.GetApplicationId();
// set the application name
appContext.SetApplicationName("Test");
// Set the priority for the application master
Priority pri = Priority.NewInstance(0);
appContext.SetPriority(pri);
// Set the queue to which this application is to be submitted in the RM
appContext.SetQueue("default");
// 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);
// Create the request to send to the applications manager
SubmitApplicationRequest appRequest = Org.Apache.Hadoop.Yarn.Util.Records.NewRecord
<SubmitApplicationRequest>();
appRequest.SetApplicationSubmissionContext(appContext);
// Submit the application to the applications manager
yarnClient.SubmitApplication(appContext);
// wait for app to start
int iterationsLeft = 30;
RMAppAttempt appAttempt = null;
while (iterationsLeft > 0)
{
ApplicationReport appReport = yarnClient.GetApplicationReport(appId);
if (appReport.GetYarnApplicationState() == YarnApplicationState.Accepted)
{
attemptId = appReport.GetCurrentApplicationAttemptId();
appAttempt = yarnCluster.GetResourceManager().GetRMContext().GetRMApps()[attemptId
.GetApplicationId()].GetCurrentAppAttempt();
while (true)
{
if (appAttempt.GetAppAttemptState() == RMAppAttemptState.Launched)
{
break;
}
}
break;
}
Sleep(1000);
--iterationsLeft;
}
if (iterationsLeft == 0)
{
NUnit.Framework.Assert.Fail("Application hasn't bee started");
}
// Just dig into the ResourceManager and get the AMRMToken just for the sake
// of testing.
UserGroupInformation.SetLoginUser(UserGroupInformation.CreateRemoteUser(UserGroupInformation
.GetCurrentUser().GetUserName()));
UserGroupInformation.GetCurrentUser().AddToken(appAttempt.GetAMRMToken());
//creating an instance NMTokenCase
nmTokenCache = new NMTokenCache();
// start am rm client
rmClient = (AMRMClientImpl <AMRMClient.ContainerRequest>)AMRMClient.CreateAMRMClient
<AMRMClient.ContainerRequest>();
//setting an instance NMTokenCase
rmClient.SetNMTokenCache(nmTokenCache);
rmClient.Init(conf);
rmClient.Start();
NUnit.Framework.Assert.IsNotNull(rmClient);
NUnit.Framework.Assert.AreEqual(Service.STATE.Started, rmClient.GetServiceState()
);
// start am nm client
nmClient = (NMClientImpl)NMClient.CreateNMClient();
//propagating the AMRMClient NMTokenCache instance
nmClient.SetNMTokenCache(rmClient.GetNMTokenCache());
nmClient.Init(conf);
nmClient.Start();
NUnit.Framework.Assert.IsNotNull(nmClient);
NUnit.Framework.Assert.AreEqual(Service.STATE.Started, nmClient.GetServiceState()
);
}
/// <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();
}
}
/// <exception cref="Org.Apache.Hadoop.Yarn.Exceptions.YarnException"/>
/// <exception cref="System.IO.IOException"/>
public override ApplicationId SubmitApplication(ApplicationSubmissionContext appContext
)
{
ApplicationId applicationId = appContext.GetApplicationId();
if (applicationId == null)
{
throw new ApplicationIdNotProvidedException("ApplicationId is not provided in ApplicationSubmissionContext"
);
}
SubmitApplicationRequest request = Org.Apache.Hadoop.Yarn.Util.Records.NewRecord <
SubmitApplicationRequest>();
request.SetApplicationSubmissionContext(appContext);
// Automatically add the timeline DT into the CLC
// Only when the security and the timeline service are both enabled
if (IsSecurityEnabled() && timelineServiceEnabled)
{
AddTimelineDelegationToken(appContext.GetAMContainerSpec());
}
//TODO: YARN-1763:Handle RM failovers during the submitApplication call.
rmClient.SubmitApplication(request);
int pollCount = 0;
long startTime = Runtime.CurrentTimeMillis();
EnumSet <YarnApplicationState> waitingStates = EnumSet.Of(YarnApplicationState.New
, YarnApplicationState.NewSaving, YarnApplicationState.Submitted);
EnumSet <YarnApplicationState> failToSubmitStates = EnumSet.Of(YarnApplicationState
.Failed, YarnApplicationState.Killed);
while (true)
{
try
{
ApplicationReport appReport = GetApplicationReport(applicationId);
YarnApplicationState state = appReport.GetYarnApplicationState();
if (!waitingStates.Contains(state))
{
if (failToSubmitStates.Contains(state))
{
throw new YarnException("Failed to submit " + applicationId + " to YARN : " + appReport
.GetDiagnostics());
}
Log.Info("Submitted application " + applicationId);
break;
}
long elapsedMillis = Runtime.CurrentTimeMillis() - startTime;
if (EnforceAsyncAPITimeout() && elapsedMillis >= asyncApiPollTimeoutMillis)
{
throw new YarnException("Timed out while waiting for application " + applicationId
+ " to be submitted successfully");
}
// Notify the client through the log every 10 poll, in case the client
// is blocked here too long.
if (++pollCount % 10 == 0)
{
Log.Info("Application submission is not finished, " + "submitted application " +
applicationId + " is still in " + state);
}
try
{
Sharpen.Thread.Sleep(submitPollIntervalMillis);
}
catch (Exception)
{
Log.Error("Interrupted while waiting for application " + applicationId + " to be successfully submitted."
);
}
}
catch (ApplicationNotFoundException)
{
// FailOver or RM restart happens before RMStateStore saves
// ApplicationState
Log.Info("Re-submit application " + applicationId + "with the " + "same ApplicationSubmissionContext"
);
rmClient.SubmitApplication(request);
}
}
return(applicationId);
}
/// <summary>Main run function for the client</summary>
/// <returns>true if application completed successfully</returns>
/// <exception cref="System.IO.IOException"/>
/// <exception cref="Org.Apache.Hadoop.Yarn.Exceptions.YarnException"/>
public virtual bool Run()
{
Log.Info("Running Client");
yarnClient.Start();
YarnClusterMetrics clusterMetrics = yarnClient.GetYarnClusterMetrics();
Log.Info("Got Cluster metric info from ASM" + ", numNodeManagers=" + clusterMetrics
.GetNumNodeManagers());
IList <NodeReport> clusterNodeReports = yarnClient.GetNodeReports(NodeState.Running
);
Log.Info("Got Cluster node info from ASM");
foreach (NodeReport node in clusterNodeReports)
{
Log.Info("Got node report from ASM for" + ", nodeId=" + node.GetNodeId() + ", nodeAddress"
+ node.GetHttpAddress() + ", nodeRackName" + node.GetRackName() + ", nodeNumContainers"
+ node.GetNumContainers());
}
QueueInfo queueInfo = yarnClient.GetQueueInfo(this.amQueue);
Log.Info("Queue info" + ", queueName=" + queueInfo.GetQueueName() + ", queueCurrentCapacity="
+ queueInfo.GetCurrentCapacity() + ", queueMaxCapacity=" + queueInfo.GetMaximumCapacity
() + ", queueApplicationCount=" + queueInfo.GetApplications().Count + ", queueChildQueueCount="
+ queueInfo.GetChildQueues().Count);
IList <QueueUserACLInfo> listAclInfo = yarnClient.GetQueueAclsInfo();
foreach (QueueUserACLInfo aclInfo in listAclInfo)
{
foreach (QueueACL userAcl in aclInfo.GetUserAcls())
{
Log.Info("User ACL Info for Queue" + ", queueName=" + aclInfo.GetQueueName() + ", userAcl="
+ userAcl.ToString());
}
}
if (domainId != null && domainId.Length > 0 && toCreateDomain)
{
PrepareTimelineDomain();
}
// Get a new application id
YarnClientApplication app = yarnClient.CreateApplication();
GetNewApplicationResponse appResponse = app.GetNewApplicationResponse();
// TODO get min/max resource capabilities from RM and change memory ask if needed
// If we do not have min/max, we may not be able to correctly request
// the required resources from the RM for the app master
// Memory ask has to be a multiple of min and less than max.
// Dump out information about cluster capability as seen by the resource manager
int maxMem = appResponse.GetMaximumResourceCapability().GetMemory();
Log.Info("Max mem capabililty of resources in this cluster " + maxMem);
// A resource ask cannot exceed the max.
if (amMemory > maxMem)
{
Log.Info("AM memory specified above max threshold of cluster. Using max value." +
", specified=" + amMemory + ", max=" + maxMem);
amMemory = maxMem;
}
int maxVCores = appResponse.GetMaximumResourceCapability().GetVirtualCores();
Log.Info("Max virtual cores capabililty of resources in this cluster " + maxVCores
);
if (amVCores > maxVCores)
{
Log.Info("AM virtual cores specified above max threshold of cluster. " + "Using max value."
+ ", specified=" + amVCores + ", max=" + maxVCores);
amVCores = maxVCores;
}
// set the application name
ApplicationSubmissionContext appContext = app.GetApplicationSubmissionContext();
ApplicationId appId = appContext.GetApplicationId();
appContext.SetKeepContainersAcrossApplicationAttempts(keepContainers);
appContext.SetApplicationName(appName);
if (attemptFailuresValidityInterval >= 0)
{
appContext.SetAttemptFailuresValidityInterval(attemptFailuresValidityInterval);
}
// set local resources for the application master
// local files or archives as needed
// In this scenario, the jar file for the application master is part of the local resources
IDictionary <string, LocalResource> localResources = new Dictionary <string, LocalResource
>();
Log.Info("Copy App Master jar from local filesystem and add to local environment"
);
// Copy the application master jar to the filesystem
// Create a local resource to point to the destination jar path
FileSystem fs = FileSystem.Get(conf);
AddToLocalResources(fs, appMasterJar, appMasterJarPath, appId.ToString(), localResources
, null);
// Set the log4j properties if needed
if (!log4jPropFile.IsEmpty())
{
AddToLocalResources(fs, log4jPropFile, log4jPath, appId.ToString(), localResources
, null);
}
// The shell script has to be made available on the final container(s)
// where it will be executed.
// To do this, we need to first copy into the filesystem that is visible
// to the yarn framework.
// We do not need to set this as a local resource for the application
// master as the application master does not need it.
string hdfsShellScriptLocation = string.Empty;
long hdfsShellScriptLen = 0;
long hdfsShellScriptTimestamp = 0;
if (!shellScriptPath.IsEmpty())
{
Path shellSrc = new Path(shellScriptPath);
string shellPathSuffix = appName + "/" + appId.ToString() + "/" + ScriptPath;
Path shellDst = new Path(fs.GetHomeDirectory(), shellPathSuffix);
fs.CopyFromLocalFile(false, true, shellSrc, shellDst);
hdfsShellScriptLocation = shellDst.ToUri().ToString();
FileStatus shellFileStatus = fs.GetFileStatus(shellDst);
hdfsShellScriptLen = shellFileStatus.GetLen();
hdfsShellScriptTimestamp = shellFileStatus.GetModificationTime();
}
if (!shellCommand.IsEmpty())
{
AddToLocalResources(fs, null, shellCommandPath, appId.ToString(), localResources,
shellCommand);
}
if (shellArgs.Length > 0)
{
AddToLocalResources(fs, null, shellArgsPath, appId.ToString(), localResources, StringUtils
.Join(shellArgs, " "));
}
// Set the necessary security tokens as needed
//amContainer.setContainerTokens(containerToken);
// Set the env variables to be setup in the env where the application master will be run
Log.Info("Set the environment for the application master");
IDictionary <string, string> env = new Dictionary <string, string>();
// put location of shell script into env
// using the env info, the application master will create the correct local resource for the
// eventual containers that will be launched to execute the shell scripts
env[DSConstants.Distributedshellscriptlocation] = hdfsShellScriptLocation;
env[DSConstants.Distributedshellscripttimestamp] = System.Convert.ToString(hdfsShellScriptTimestamp
);
env[DSConstants.Distributedshellscriptlen] = System.Convert.ToString(hdfsShellScriptLen
);
if (domainId != null && domainId.Length > 0)
{
env[DSConstants.Distributedshelltimelinedomain] = domainId;
}
// Add AppMaster.jar location to classpath
// At some point we should not be required to add
// the hadoop specific classpaths to the env.
// It should be provided out of the box.
// For now setting all required classpaths including
// the classpath to "." for the application jar
StringBuilder classPathEnv = new StringBuilder(ApplicationConstants.Environment.Classpath
.$$()).Append(ApplicationConstants.ClassPathSeparator).Append("./*");
foreach (string c in conf.GetStrings(YarnConfiguration.YarnApplicationClasspath,
YarnConfiguration.DefaultYarnCrossPlatformApplicationClasspath))
{
classPathEnv.Append(ApplicationConstants.ClassPathSeparator);
classPathEnv.Append(c.Trim());
}
classPathEnv.Append(ApplicationConstants.ClassPathSeparator).Append("./log4j.properties"
);
// add the runtime classpath needed for tests to work
if (conf.GetBoolean(YarnConfiguration.IsMiniYarnCluster, false))
{
classPathEnv.Append(':');
classPathEnv.Append(Runtime.GetProperty("java.class.path"));
}
env["CLASSPATH"] = classPathEnv.ToString();
// Set the necessary command to execute the application master
Vector <CharSequence> vargs = new Vector <CharSequence>(30);
// Set java executable command
Log.Info("Setting up app master command");
vargs.AddItem(ApplicationConstants.Environment.JavaHome.$$() + "/bin/java");
// Set Xmx based on am memory size
vargs.AddItem("-Xmx" + amMemory + "m");
// Set class name
vargs.AddItem(appMasterMainClass);
// Set params for Application Master
vargs.AddItem("--container_memory " + containerMemory.ToString());
vargs.AddItem("--container_vcores " + containerVirtualCores.ToString());
vargs.AddItem("--num_containers " + numContainers.ToString());
if (null != nodeLabelExpression)
{
appContext.SetNodeLabelExpression(nodeLabelExpression);
}
vargs.AddItem("--priority " + shellCmdPriority.ToString());
foreach (KeyValuePair <string, string> entry in shellEnv)
{
vargs.AddItem("--shell_env " + entry.Key + "=" + entry.Value);
}
if (debugFlag)
{
vargs.AddItem("--debug");
}
vargs.AddItem("1>" + ApplicationConstants.LogDirExpansionVar + "/AppMaster.stdout"
);
vargs.AddItem("2>" + ApplicationConstants.LogDirExpansionVar + "/AppMaster.stderr"
);
// Get final commmand
StringBuilder command = new StringBuilder();
foreach (CharSequence str in vargs)
{
command.Append(str).Append(" ");
}
Log.Info("Completed setting up app master command " + command.ToString());
IList <string> commands = new AList <string>();
commands.AddItem(command.ToString());
// Set up the container launch context for the application master
ContainerLaunchContext amContainer = ContainerLaunchContext.NewInstance(localResources
, env, commands, null, null, null);
// Set up resource type requirements
// For now, both memory and vcores are supported, so we set memory and
// vcores requirements
Resource capability = Resource.NewInstance(amMemory, amVCores);
appContext.SetResource(capability);
// Service data is a binary blob that can be passed to the application
// Not needed in this scenario
// amContainer.setServiceData(serviceData);
// Setup security tokens
if (UserGroupInformation.IsSecurityEnabled())
{
// Note: Credentials class is marked as LimitedPrivate for HDFS and MapReduce
Credentials credentials = new Credentials();
string tokenRenewer = conf.Get(YarnConfiguration.RmPrincipal);
if (tokenRenewer == null || tokenRenewer.Length == 0)
{
throw new IOException("Can't get Master Kerberos principal for the RM to use as renewer"
);
}
// For now, only getting tokens for the default file-system.
Org.Apache.Hadoop.Security.Token.Token <object>[] tokens = fs.AddDelegationTokens(
tokenRenewer, credentials);
if (tokens != null)
{
foreach (Org.Apache.Hadoop.Security.Token.Token <object> token in tokens)
{
Log.Info("Got dt for " + fs.GetUri() + "; " + token);
}
}
DataOutputBuffer dob = new DataOutputBuffer();
credentials.WriteTokenStorageToStream(dob);
ByteBuffer fsTokens = ByteBuffer.Wrap(dob.GetData(), 0, dob.GetLength());
amContainer.SetTokens(fsTokens);
}
appContext.SetAMContainerSpec(amContainer);
// Set the priority for the application master
// TODO - what is the range for priority? how to decide?
Priority pri = Priority.NewInstance(amPriority);
appContext.SetPriority(pri);
// Set the queue to which this application is to be submitted in the RM
appContext.SetQueue(amQueue);
// Submit the application to the applications manager
// SubmitApplicationResponse submitResp = applicationsManager.submitApplication(appRequest);
// Ignore the response as either a valid response object is returned on success
// or an exception thrown to denote some form of a failure
Log.Info("Submitting application to ASM");
yarnClient.SubmitApplication(appContext);
// TODO
// Try submitting the same request again
// app submission failure?
// Monitor the application
return(MonitorApplication(appId));
}