List<ContainerStatus> completedContainers) {
if (LOG.isDebugEnabled()) {
LOG.debug("nodeUpdate: " + nm + " clusterResources: " + clusterResource);
}
SchedulerNode node = getNode(nm.getNodeID());
// Processing the newly launched containers
for (ContainerStatus launchedContainer : newlyLaunchedContainers) {
containerLaunchedOnNode(launchedContainer.getContainerId(), node);
}
// Process completed containers
for (ContainerStatus completedContainer : completedContainers) {
ContainerId containerId = completedContainer.getContainerId();
LOG.debug("Container FINISHED: " + containerId);
completedContainer(getRMContainer(containerId),
completedContainer, RMContainerEventType.FINISHED);
}
// Now node data structures are upto date and ready for scheduling.
if(LOG.isDebugEnabled()) {
LOG.debug("Node being looked for scheduling " + nm
+ " availableResource: " + node.getAvailableResource());
}
// Assign new containers...
// 1. Check for reserved applications
// 2. Schedule if there are no reservations
RMContainer reservedContainer = node.getReservedContainer();
if (reservedContainer != null) {
SchedulerApp reservedApplication =
getApplication(reservedContainer.getApplicationAttemptId());
// Try to fulfill the reservation
LOG.info("Trying to fulfill reservation for application " +
reservedApplication.getApplicationId() + " on node: " + nm);
LeafQueue queue = ((LeafQueue)reservedApplication.getQueue());
queue.assignContainers(clusterResource, node);
}
// Try to schedule more if there are no reservations to fulfill
if (node.getReservedContainer() == null) {
root.assignContainers(clusterResource, node);
} else {
LOG.info("Skipping scheduling since node " + nm +
" is reserved by application " +
node.getReservedContainer().getContainerId().getApplicationAttemptId()
);
}
}