public void run() {
int lastHeartBeatID = 0;
while (!isStopped) {
// Send heartbeat
try {
NodeHeartbeatResponse response = null;
NodeStatus nodeStatus = getNodeStatusAndUpdateContainersInContext();
nodeStatus.setResponseId(lastHeartBeatID);
NodeHeartbeatRequest request = recordFactory
.newRecordInstance(NodeHeartbeatRequest.class);
request.setNodeStatus(nodeStatus);
request
.setLastKnownContainerTokenMasterKey(NodeStatusUpdaterImpl.this.context
.getContainerTokenSecretManager().getCurrentKey());
request
.setLastKnownNMTokenMasterKey(NodeStatusUpdaterImpl.this.context
.getNMTokenSecretManager().getCurrentKey());
response = resourceTracker.nodeHeartbeat(request);
//get next heartbeat interval from response
nextHeartBeatInterval = response.getNextHeartBeatInterval();
updateMasterKeys(response);
if (response.getNodeAction() == NodeAction.SHUTDOWN) {
LOG
.warn("Recieved SHUTDOWN signal from Resourcemanager as part of heartbeat,"
+ " hence shutting down.");
LOG.warn("Message from ResourceManager: "
+ response.getDiagnosticsMessage());
dispatcher.getEventHandler().handle(
new NodeManagerEvent(NodeManagerEventType.SHUTDOWN));
break;
}
if (response.getNodeAction() == NodeAction.RESYNC) {
LOG.warn("Node is out of sync with ResourceManager,"
+ " hence resyncing.");
LOG.warn("Message from ResourceManager: "
+ response.getDiagnosticsMessage());
// Invalidate the RMIdentifier while resync
NodeStatusUpdaterImpl.this.rmIdentifier =
ResourceManagerConstants.RM_INVALID_IDENTIFIER;
dispatcher.getEventHandler().handle(
new NodeManagerEvent(NodeManagerEventType.RESYNC));
break;
}
lastHeartBeatID = response.getResponseId();
List<ContainerId> containersToCleanup = response
.getContainersToCleanup();
if (!containersToCleanup.isEmpty()) {
dispatcher.getEventHandler().handle(
new CMgrCompletedContainersEvent(containersToCleanup,
CMgrCompletedContainersEvent.Reason.BY_RESOURCEMANAGER));
}
List<ApplicationId> appsToCleanup =
response.getApplicationsToCleanup();
//Only start tracking for keepAlive on FINISH_APP
trackAppsForKeepAlive(appsToCleanup);
if (!appsToCleanup.isEmpty()) {
dispatcher.getEventHandler().handle(
new CMgrCompletedAppsEvent(appsToCleanup,
CMgrCompletedAppsEvent.Reason.BY_RESOURCEMANAGER));
}
} catch (ConnectException e) {
//catch and throw the exception if tried MAX wait time to connect RM
dispatcher.getEventHandler().handle(
new NodeManagerEvent(NodeManagerEventType.SHUTDOWN));
throw new YarnRuntimeException(e);
} catch (Throwable e) {
// TODO Better error handling. Thread can die with the rest of the
// NM still running.
LOG.error("Caught exception in status-updater", e);
} finally {
synchronized (heartbeatMonitor) {
nextHeartBeatInterval = nextHeartBeatInterval <= 0 ?
YarnConfiguration.DEFAULT_RM_NM_HEARTBEAT_INTERVAL_MS :
nextHeartBeatInterval;
try {
heartbeatMonitor.wait(nextHeartBeatInterval);
} catch (InterruptedException e) {
// Do Nothing
}
}
}
}
}
private void updateMasterKeys(NodeHeartbeatResponse response) {
// See if the master-key has rolled over
MasterKey updatedMasterKey = response.getContainerTokenMasterKey();
if (updatedMasterKey != null) {
// Will be non-null only on roll-over on RM side
context.getContainerTokenSecretManager().setMasterKey(updatedMasterKey);
}
updatedMasterKey = response.getNMTokenMasterKey();
if (updatedMasterKey != null) {
context.getNMTokenSecretManager().setMasterKey(updatedMasterKey);
}
}
};