Examples with RMNodeEvent org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNodeEvent used on opensource projects

Example 26 with RMNodeEvent

use of org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNodeEvent in project hadoop by apache.

the class ResourceTrackerService method nodeHeartbeat.

@SuppressWarnings("unchecked")
@Override
public NodeHeartbeatResponse nodeHeartbeat(NodeHeartbeatRequest request) throws YarnException, IOException {
    NodeStatus remoteNodeStatus = request.getNodeStatus();
    /**
     * Here is the node heartbeat sequence...
     * 1. Check if it's a valid (i.e. not excluded) node
     * 2. Check if it's a registered node
     * 3. Check if it's a 'fresh' heartbeat i.e. not duplicate heartbeat
     * 4. Send healthStatus to RMNode
     * 5. Update node's labels if distributed Node Labels configuration is enabled
     */
    NodeId nodeId = remoteNodeStatus.getNodeId();
    // in decommissioning.
    if (!this.nodesListManager.isValidNode(nodeId.getHost()) && !isNodeInDecommissioning(nodeId)) {
        String message = "Disallowed NodeManager nodeId: " + nodeId + " hostname: " + nodeId.getHost();
        LOG.info(message);
        return YarnServerBuilderUtils.newNodeHeartbeatResponse(NodeAction.SHUTDOWN, message);
    }
    // 2. Check if it's a registered node
    RMNode rmNode = this.rmContext.getRMNodes().get(nodeId);
    if (rmNode == null) {
        /* node does not exist */
        String message = "Node not found resyncing " + remoteNodeStatus.getNodeId();
        LOG.info(message);
        return YarnServerBuilderUtils.newNodeHeartbeatResponse(NodeAction.RESYNC, message);
    }
    // Send ping
    this.nmLivelinessMonitor.receivedPing(nodeId);
    this.decommissioningWatcher.update(rmNode, remoteNodeStatus);
    // 3. Check if it's a 'fresh' heartbeat i.e. not duplicate heartbeat
    NodeHeartbeatResponse lastNodeHeartbeatResponse = rmNode.getLastNodeHeartBeatResponse();
    if (remoteNodeStatus.getResponseId() + 1 == lastNodeHeartbeatResponse.getResponseId()) {
        LOG.info("Received duplicate heartbeat from node " + rmNode.getNodeAddress() + " responseId=" + remoteNodeStatus.getResponseId());
        return lastNodeHeartbeatResponse;
    } else if (remoteNodeStatus.getResponseId() + 1 < lastNodeHeartbeatResponse.getResponseId()) {
        String message = "Too far behind rm response id:" + lastNodeHeartbeatResponse.getResponseId() + " nm response id:" + remoteNodeStatus.getResponseId();
        LOG.info(message);
        // TODO: Just sending reboot is not enough. Think more.
        this.rmContext.getDispatcher().getEventHandler().handle(new RMNodeEvent(nodeId, RMNodeEventType.REBOOTING));
        return YarnServerBuilderUtils.newNodeHeartbeatResponse(NodeAction.RESYNC, message);
    }
    boolean timelineV2Enabled = YarnConfiguration.timelineServiceV2Enabled(getConfig());
    if (timelineV2Enabled) {
        // Check & update collectors info from request.
        // TODO make sure it won't have race condition issue for AM failed over
        // case that the older registration could possible override the newer
        // one.
        updateAppCollectorsMap(request);
    }
    // Evaluate whether a DECOMMISSIONING node is ready to be DECOMMISSIONED.
    if (rmNode.getState() == NodeState.DECOMMISSIONING && decommissioningWatcher.checkReadyToBeDecommissioned(rmNode.getNodeID())) {
        String message = "DECOMMISSIONING " + nodeId + " is ready to be decommissioned";
        LOG.info(message);
        this.rmContext.getDispatcher().getEventHandler().handle(new RMNodeEvent(nodeId, RMNodeEventType.DECOMMISSION));
        this.nmLivelinessMonitor.unregister(nodeId);
        return YarnServerBuilderUtils.newNodeHeartbeatResponse(NodeAction.SHUTDOWN, message);
    }
    // Heartbeat response
    NodeHeartbeatResponse nodeHeartBeatResponse = YarnServerBuilderUtils.newNodeHeartbeatResponse(lastNodeHeartbeatResponse.getResponseId() + 1, NodeAction.NORMAL, null, null, null, null, nextHeartBeatInterval);
    rmNode.updateNodeHeartbeatResponseForCleanup(nodeHeartBeatResponse);
    rmNode.updateNodeHeartbeatResponseForContainersDecreasing(nodeHeartBeatResponse);
    populateKeys(request, nodeHeartBeatResponse);
    ConcurrentMap<ApplicationId, ByteBuffer> systemCredentials = rmContext.getSystemCredentialsForApps();
    if (!systemCredentials.isEmpty()) {
        nodeHeartBeatResponse.setSystemCredentialsForApps(systemCredentials);
    }
    if (timelineV2Enabled) {
        // Return collectors' map that NM needs to know
        setAppCollectorsMapToResponse(rmNode.getRunningApps(), nodeHeartBeatResponse);
    }
    // 4. Send status to RMNode, saving the latest response.
    RMNodeStatusEvent nodeStatusEvent = new RMNodeStatusEvent(nodeId, remoteNodeStatus, nodeHeartBeatResponse);
    if (request.getLogAggregationReportsForApps() != null && !request.getLogAggregationReportsForApps().isEmpty()) {
        nodeStatusEvent.setLogAggregationReportsForApps(request.getLogAggregationReportsForApps());
    }
    this.rmContext.getDispatcher().getEventHandler().handle(nodeStatusEvent);
    // 5. Update node's labels to RM's NodeLabelManager.
    if (isDistributedNodeLabelsConf && request.getNodeLabels() != null) {
        try {
            updateNodeLabelsFromNMReport(NodeLabelsUtils.convertToStringSet(request.getNodeLabels()), nodeId);
            nodeHeartBeatResponse.setAreNodeLabelsAcceptedByRM(true);
        } catch (IOException ex) {
            //ensure the error message is captured and sent across in response
            nodeHeartBeatResponse.setDiagnosticsMessage(ex.getMessage());
            nodeHeartBeatResponse.setAreNodeLabelsAcceptedByRM(false);
        }
    }
    // 6. check if node's capacity is load from dynamic-resources.xml
    // if so, send updated resource back to NM.
    String nid = nodeId.toString();
    Resource capability = loadNodeResourceFromDRConfiguration(nid);
    // sync back with new resource if not null.
    if (capability != null) {
        nodeHeartBeatResponse.setResource(capability);
    }
    // the node to truncate the number of Containers queued for execution.
    if (this.rmContext.getNodeManagerQueueLimitCalculator() != null) {
        nodeHeartBeatResponse.setContainerQueuingLimit(this.rmContext.getNodeManagerQueueLimitCalculator().createContainerQueuingLimit());
    }
    return nodeHeartBeatResponse;
}

Example 27 with RMNodeEvent

use of org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNodeEvent in project hadoop by apache.

the class NodesListManager method refreshNodesForcefully.

/**
   * Forcefully decommission the nodes if they are in DECOMMISSIONING state
   */
public void refreshNodesForcefully() {
    for (Entry<NodeId, RMNode> entry : rmContext.getRMNodes().entrySet()) {
        if (entry.getValue().getState() == NodeState.DECOMMISSIONING) {
            RMNodeEventType nodeEventType = isUntrackedNode(entry.getKey().getHost()) ? RMNodeEventType.SHUTDOWN : RMNodeEventType.DECOMMISSION;
            this.rmContext.getDispatcher().getEventHandler().handle(new RMNodeEvent(entry.getKey(), nodeEventType));
        }
    }
}