How to use

getAvailableMB

method

in

org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSQueueMetrics

/**
 * Dump scheduler state including states of all queues.
 */
private void dumpSchedulerState() {
 FSQueue rootQueue = queueMgr.getRootQueue();
 Resource clusterResource = getClusterResource();
 STATE_DUMP_LOG.debug(
   "FairScheduler state: Cluster Capacity: " + clusterResource +
   "  Allocations: " + rootMetrics.getAllocatedResources() +
   "  Availability: " + Resource.newInstance(
     rootMetrics.getAvailableMB(),
     rootMetrics.getAvailableVirtualCores()) +
   "  Demand: " + rootQueue.getDemand());
 STATE_DUMP_LOG.debug(rootQueue.dumpState());
}

/**
 * Recompute the internal variables used by the scheduler - per-job weights,
 * fair shares, deficits, minimum slot allocations, and amount of used and
 * required resources per job.
 */
protected synchronized void update() {
 long start = getClock().getTime();
 updateStarvationStats(); // Determine if any queues merit preemption
 FSQueue rootQueue = queueMgr.getRootQueue();
 // Recursively update demands for all queues
 rootQueue.updateDemand();
 rootQueue.setFairShare(clusterResource);
 // Recursively compute fair shares for all queues
 // and update metrics
 rootQueue.recomputeShares();
 updateRootQueueMetrics();
 if (LOG.isDebugEnabled()) {
  if (--updatesToSkipForDebug < 0) {
   updatesToSkipForDebug = UPDATE_DEBUG_FREQUENCY;
   LOG.debug("Cluster Capacity: " + clusterResource +
     "  Allocations: " + rootMetrics.getAllocatedResources() +
     "  Availability: " + Resource.newInstance(
     rootMetrics.getAvailableMB(),
     rootMetrics.getAvailableVirtualCores()) +
     "  Demand: " + rootQueue.getDemand());
  }
 }
 long duration = getClock().getTime() - start;
 fsOpDurations.addUpdateCallDuration(duration);
}

/**
 * Recompute the internal variables used by the scheduler - per-job weights,
 * fair shares, deficits, minimum slot allocations, and amount of used and
 * required resources per job.
 */
protected synchronized void update() {
 long start = getClock().getTime();
 updateStarvationStats(); // Determine if any queues merit preemption
 FSQueue rootQueue = queueMgr.getRootQueue();
 // Recursively update demands for all queues
 rootQueue.updateDemand();
 rootQueue.setFairShare(clusterResource);
 // Recursively compute fair shares for all queues
 // and update metrics
 rootQueue.recomputeShares();
 updateRootQueueMetrics();
 if (LOG.isDebugEnabled()) {
  if (--updatesToSkipForDebug < 0) {
   updatesToSkipForDebug = UPDATE_DEBUG_FREQUENCY;
   LOG.debug("Cluster Capacity: " + clusterResource +
     "  Allocations: " + rootMetrics.getAllocatedResources() +
     "  Availability: " + Resource.newInstance(
     rootMetrics.getAvailableMB(),
     rootMetrics.getAvailableVirtualCores()) +
     "  Demand: " + rootQueue.getDemand());
  }
 }
 long duration = getClock().getTime() - start;
 fsOpDurations.addUpdateCallDuration(duration);
}

private void registerNodeAndSubmitApp(
  int memory, int vcores, int appContainers, int appMemory) {
 RMNode node1 = MockNodes.newNodeInfo(
   1, Resources.createResource(memory, vcores), 1, "node1");
 NodeAddedSchedulerEvent nodeEvent1 = new NodeAddedSchedulerEvent(node1);
 scheduler.handle(nodeEvent1);
 assertEquals("Incorrect amount of resources in the cluster",
   memory, scheduler.rootMetrics.getAvailableMB());
 assertEquals("Incorrect amount of resources in the cluster",
   vcores, scheduler.rootMetrics.getAvailableVirtualCores());
 createSchedulingRequest(appMemory, "queueA", "user1", appContainers);
 scheduler.update();
 // Sufficient node check-ins to fully schedule containers
 for (int i = 0; i < 3; i++) {
  NodeUpdateSchedulerEvent nodeUpdate1 = new NodeUpdateSchedulerEvent(node1);
  scheduler.handle(nodeUpdate1);
 }
 assertEquals("app1's request is not met",
   memory - appContainers * appMemory,
   scheduler.rootMetrics.getAvailableMB());
}

public QueueStatistics getQueueStatistics() {
 QueueStatistics stats =
   recordFactory.newRecordInstance(QueueStatistics.class);
 stats.setNumAppsSubmitted(getMetrics().getAppsSubmitted());
 stats.setNumAppsRunning(getMetrics().getAppsRunning());
 stats.setNumAppsPending(getMetrics().getAppsPending());
 stats.setNumAppsCompleted(getMetrics().getAppsCompleted());
 stats.setNumAppsKilled(getMetrics().getAppsKilled());
 stats.setNumAppsFailed(getMetrics().getAppsFailed());
 stats.setNumActiveUsers(getMetrics().getActiveUsers());
 stats.setAvailableMemoryMB(getMetrics().getAvailableMB());
 stats.setAllocatedMemoryMB(getMetrics().getAllocatedMB());
 stats.setPendingMemoryMB(getMetrics().getPendingMB());
 stats.setReservedMemoryMB(getMetrics().getReservedMB());
 stats.setAvailableVCores(getMetrics().getAvailableVirtualCores());
 stats.setAllocatedVCores(getMetrics().getAllocatedVirtualCores());
 stats.setPendingVCores(getMetrics().getPendingVirtualCores());
 stats.setReservedVCores(getMetrics().getReservedVirtualCores());
 stats.setAllocatedContainers(getMetrics().getAllocatedContainers());
 stats.setPendingContainers(getMetrics().getPendingContainers());
 stats.setReservedContainers(getMetrics().getReservedContainers());
 return stats;
}