/// <exception cref="Org.Apache.Hadoop.Yarn.Exceptions.YarnException"/>
/// <exception cref="System.IO.IOException"/>
public override void StopContainer(ContainerId containerId, NodeId nodeId)
{
NMClientImpl.StartedContainer startedContainer = GetStartedContainer(containerId);
// Only allow one request of stopping the container to move forward
// When entering the block, check whether the precursor has already stopped
// the container
if (startedContainer != null)
{
lock (startedContainer)
{
if (startedContainer.state != ContainerState.Running)
{
return;
}
StopContainerInternal(containerId, nodeId);
// Only after successful
startedContainer.state = ContainerState.Complete;
RemoveStartedContainer(startedContainer);
}
}
else
{
StopContainerInternal(containerId, nodeId);
}
}
protected internal virtual void RemoveStartedContainer(NMClientImpl.StartedContainer
container)
{
lock (this)
{
Sharpen.Collections.Remove(startedContainers, container.containerId);
}
}
/// <exception cref="Org.Apache.Hadoop.Yarn.Exceptions.YarnException"/>
/// <exception cref="System.IO.IOException"/>
protected internal virtual NMClientImpl.StartedContainer CreateStartedContainer(Container
container)
{
lock (this)
{
NMClientImpl.StartedContainer startedContainer = new NMClientImpl.StartedContainer
(container.GetId(), container.GetNodeId(), container.GetContainerToken());
return(startedContainer);
}
}
/// <exception cref="Org.Apache.Hadoop.Yarn.Exceptions.YarnException"/>
private void AddStartingContainer(NMClientImpl.StartedContainer startedContainer)
{
if (startedContainers.PutIfAbsent(startedContainer.containerId, startedContainer)
!= null)
{
throw RPCUtil.GetRemoteException("Container " + startedContainer.containerId.ToString
() + " is already started");
}
startedContainers[startedContainer.GetContainerId()] = startedContainer;
}
/// <exception cref="Org.Apache.Hadoop.Yarn.Exceptions.YarnException"/>
/// <exception cref="System.IO.IOException"/>
public override IDictionary <string, ByteBuffer> StartContainer(Container container
, ContainerLaunchContext containerLaunchContext)
{
// Do synchronization on StartedContainer to prevent race condition
// between startContainer and stopContainer only when startContainer is
// in progress for a given container.
NMClientImpl.StartedContainer startingContainer = CreateStartedContainer(container
);
lock (startingContainer)
{
AddStartingContainer(startingContainer);
IDictionary <string, ByteBuffer> allServiceResponse;
ContainerManagementProtocolProxy.ContainerManagementProtocolProxyData proxy = null;
try
{
proxy = cmProxy.GetProxy(container.GetNodeId().ToString(), container.GetId());
StartContainerRequest scRequest = StartContainerRequest.NewInstance(containerLaunchContext
, container.GetContainerToken());
IList <StartContainerRequest> list = new AList <StartContainerRequest>();
list.AddItem(scRequest);
StartContainersRequest allRequests = StartContainersRequest.NewInstance(list);
StartContainersResponse response = proxy.GetContainerManagementProtocol().StartContainers
(allRequests);
if (response.GetFailedRequests() != null && response.GetFailedRequests().Contains
(container.GetId()))
{
Exception t = response.GetFailedRequests()[container.GetId()].DeSerialize();
ParseAndThrowException(t);
}
allServiceResponse = response.GetAllServicesMetaData();
startingContainer.state = ContainerState.Running;
}
catch (YarnException e)
{
startingContainer.state = ContainerState.Complete;
// Remove the started container if it failed to start
RemoveStartedContainer(startingContainer);
throw;
}
catch (IOException e)
{
startingContainer.state = ContainerState.Complete;
RemoveStartedContainer(startingContainer);
throw;
}
catch (Exception t)
{
startingContainer.state = ContainerState.Complete;
RemoveStartedContainer(startingContainer);
throw RPCUtil.GetRemoteException(t);
}
finally
{
if (proxy != null)
{
cmProxy.MayBeCloseProxy(proxy);
}
}
return(allServiceResponse);
}
}