| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * <p> |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * <p> |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.hadoop.hdds.scm.node; |
| |
| import static org.apache.hadoop.hdds.protocol.proto.HddsProtos.NodeState.HEALTHY; |
| import static org.apache.hadoop.hdds.protocol.proto.HddsProtos.NodeState.HEALTHY_READONLY; |
| |
| import javax.management.ObjectName; |
| import java.io.IOException; |
| import java.net.InetAddress; |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.LinkedList; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.UUID; |
| import java.util.Collections; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.concurrent.ScheduledFuture; |
| import java.util.stream.Collectors; |
| |
| import org.apache.hadoop.hdds.DFSConfigKeysLegacy; |
| import org.apache.hadoop.hdds.conf.OzoneConfiguration; |
| import org.apache.hadoop.hdds.protocol.DatanodeDetails; |
| import org.apache.hadoop.hdds.protocol.proto.HddsProtos.NodeState; |
| import org.apache.hadoop.hdds.protocol.proto.HddsProtos.NodeOperationalState; |
| import org.apache.hadoop.hdds.protocol.proto.StorageContainerDatanodeProtocolProtos; |
| import org.apache.hadoop.hdds.protocol.proto |
| .StorageContainerDatanodeProtocolProtos.LayoutVersionProto; |
| import org.apache.hadoop.hdds.protocol.proto.StorageContainerDatanodeProtocolProtos.NodeReportProto; |
| import org.apache.hadoop.hdds.protocol.proto.StorageContainerDatanodeProtocolProtos.PipelineReportsProto; |
| import org.apache.hadoop.hdds.protocol.proto.StorageContainerDatanodeProtocolProtos.SCMRegisteredResponseProto.ErrorCode; |
| import org.apache.hadoop.hdds.protocol.proto.StorageContainerDatanodeProtocolProtos.SCMVersionRequestProto; |
| import org.apache.hadoop.hdds.protocol.proto.StorageContainerDatanodeProtocolProtos.StorageReportProto; |
| import org.apache.hadoop.hdds.scm.ScmConfigKeys; |
| import org.apache.hadoop.hdds.scm.VersionInfo; |
| import org.apache.hadoop.hdds.scm.container.ContainerID; |
| import org.apache.hadoop.hdds.scm.container.placement.metrics.SCMNodeMetric; |
| import org.apache.hadoop.hdds.scm.container.placement.metrics.SCMNodeStat; |
| import org.apache.hadoop.hdds.scm.events.SCMEvents; |
| import org.apache.hadoop.hdds.scm.net.NetworkTopology; |
| import org.apache.hadoop.hdds.scm.node.states.NodeAlreadyExistsException; |
| import org.apache.hadoop.hdds.scm.node.states.NodeNotFoundException; |
| import org.apache.hadoop.hdds.scm.pipeline.Pipeline; |
| import org.apache.hadoop.hdds.scm.pipeline.PipelineID; |
| import org.apache.hadoop.hdds.scm.server.SCMStorageConfig; |
| import org.apache.hadoop.hdds.server.events.EventPublisher; |
| import org.apache.hadoop.hdds.upgrade.HDDSLayoutVersionManager; |
| import org.apache.hadoop.ipc.Server; |
| import org.apache.hadoop.metrics2.util.MBeans; |
| import org.apache.hadoop.net.CachedDNSToSwitchMapping; |
| import org.apache.hadoop.net.DNSToSwitchMapping; |
| import org.apache.hadoop.net.TableMapping; |
| import org.apache.hadoop.ozone.OzoneConsts; |
| import org.apache.hadoop.ozone.protocol.VersionResponse; |
| import org.apache.hadoop.ozone.protocol.commands.CommandForDatanode; |
| import org.apache.hadoop.ozone.protocol.commands.FinalizeNewLayoutVersionCommand; |
| import org.apache.hadoop.ozone.protocol.commands.RegisteredCommand; |
| import org.apache.hadoop.ozone.protocol.commands.SCMCommand; |
| import org.apache.hadoop.ozone.protocol.commands.SetNodeOperationalStateCommand; |
| import org.apache.hadoop.util.ReflectionUtils; |
| |
| import com.google.common.annotations.VisibleForTesting; |
| import com.google.common.base.Preconditions; |
| import com.google.common.base.Strings; |
| import org.apache.hadoop.util.Time; |
| import edu.umd.cs.findbugs.annotations.SuppressFBWarnings; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Maintains information about the Datanodes on SCM side. |
| * <p> |
| * Heartbeats under SCM is very simple compared to HDFS heartbeatManager. |
| * <p> |
| * The getNode(byState) functions make copy of node maps and then creates a list |
| * based on that. It should be assumed that these get functions always report |
| * *stale* information. For example, getting the deadNodeCount followed by |
| * getNodes(DEAD) could very well produce totally different count. Also |
| * getNodeCount(HEALTHY) + getNodeCount(DEAD) + getNodeCode(STALE), is not |
| * guaranteed to add up to the total nodes that we know off. Please treat all |
| * get functions in this file as a snap-shot of information that is inconsistent |
| * as soon as you read it. |
| */ |
| public class SCMNodeManager implements NodeManager { |
| |
| public static final Logger LOG = |
| LoggerFactory.getLogger(SCMNodeManager.class); |
| |
| private final NodeStateManager nodeStateManager; |
| private final VersionInfo version; |
| private final CommandQueue commandQueue; |
| private final SCMNodeMetrics metrics; |
| // Node manager MXBean |
| private ObjectName nmInfoBean; |
| private final SCMStorageConfig scmStorageConfig; |
| private final NetworkTopology clusterMap; |
| private final DNSToSwitchMapping dnsToSwitchMapping; |
| private final boolean useHostname; |
| private final ConcurrentHashMap<String, Set<String>> dnsToUuidMap = |
| new ConcurrentHashMap<>(); |
| private final int numPipelinesPerMetadataVolume; |
| private final int heavyNodeCriteria; |
| private final HDDSLayoutVersionManager scmLayoutVersionManager; |
| private final EventPublisher scmNodeEventPublisher; |
| |
| /** |
| * Constructs SCM machine Manager. |
| */ |
| public SCMNodeManager(OzoneConfiguration conf, |
| SCMStorageConfig scmStorageConfig, |
| EventPublisher eventPublisher, |
| NetworkTopology networkTopology, |
| HDDSLayoutVersionManager layoutVersionManager) { |
| this.scmNodeEventPublisher = eventPublisher; |
| this.nodeStateManager = new NodeStateManager(conf, eventPublisher, |
| layoutVersionManager); |
| this.version = VersionInfo.getLatestVersion(); |
| this.commandQueue = new CommandQueue(); |
| this.scmStorageConfig = scmStorageConfig; |
| this.scmLayoutVersionManager = layoutVersionManager; |
| LOG.info("Entering startup safe mode."); |
| registerMXBean(); |
| this.metrics = SCMNodeMetrics.create(this); |
| this.clusterMap = networkTopology; |
| Class<? extends DNSToSwitchMapping> dnsToSwitchMappingClass = |
| conf.getClass( |
| DFSConfigKeysLegacy.NET_TOPOLOGY_NODE_SWITCH_MAPPING_IMPL_KEY, |
| TableMapping.class, DNSToSwitchMapping.class); |
| DNSToSwitchMapping newInstance = ReflectionUtils.newInstance( |
| dnsToSwitchMappingClass, conf); |
| this.dnsToSwitchMapping = |
| ((newInstance instanceof CachedDNSToSwitchMapping) ? newInstance |
| : new CachedDNSToSwitchMapping(newInstance)); |
| this.useHostname = conf.getBoolean( |
| DFSConfigKeysLegacy.DFS_DATANODE_USE_DN_HOSTNAME, |
| DFSConfigKeysLegacy.DFS_DATANODE_USE_DN_HOSTNAME_DEFAULT); |
| this.numPipelinesPerMetadataVolume = |
| conf.getInt(ScmConfigKeys.OZONE_SCM_PIPELINE_PER_METADATA_VOLUME, |
| ScmConfigKeys.OZONE_SCM_PIPELINE_PER_METADATA_VOLUME_DEFAULT); |
| String dnLimit = conf.get(ScmConfigKeys.OZONE_DATANODE_PIPELINE_LIMIT); |
| this.heavyNodeCriteria = dnLimit == null ? 0 : Integer.parseInt(dnLimit); |
| } |
| |
| private void registerMXBean() { |
| this.nmInfoBean = MBeans.register("SCMNodeManager", |
| "SCMNodeManagerInfo", this); |
| } |
| |
| private void unregisterMXBean() { |
| if (this.nmInfoBean != null) { |
| MBeans.unregister(this.nmInfoBean); |
| this.nmInfoBean = null; |
| } |
| } |
| |
| /** |
| * Returns all datanode that are in the given state. This function works by |
| * taking a snapshot of the current collection and then returning the list |
| * from that collection. This means that real map might have changed by the |
| * time we return this list. |
| * |
| * @return List of Datanodes that are known to SCM in the requested state. |
| */ |
| @Override |
| public List<DatanodeDetails> getNodes(NodeStatus nodeStatus) { |
| return nodeStateManager.getNodes(nodeStatus) |
| .stream() |
| .map(node -> (DatanodeDetails)node).collect(Collectors.toList()); |
| } |
| |
| /** |
| * Returns all datanode that are in the given states. Passing null for one of |
| * of the states acts like a wildcard for that state. This function works by |
| * taking a snapshot of the current collection and then returning the list |
| * from that collection. This means that real map might have changed by the |
| * time we return this list. |
| * |
| * @param opState The operational state of the node |
| * @param health The health of the node |
| * @return List of Datanodes that are known to SCM in the requested states. |
| */ |
| @Override |
| public List<DatanodeDetails> getNodes( |
| NodeOperationalState opState, NodeState health) { |
| return nodeStateManager.getNodes(opState, health) |
| .stream() |
| .map(node -> (DatanodeDetails)node).collect(Collectors.toList()); |
| } |
| |
| /** |
| * Returns all datanodes that are known to SCM. |
| * |
| * @return List of DatanodeDetails |
| */ |
| @Override |
| public List<DatanodeDetails> getAllNodes() { |
| return nodeStateManager.getAllNodes().stream() |
| .map(node -> (DatanodeDetails) node).collect(Collectors.toList()); |
| } |
| |
| /** |
| * Returns the Number of Datanodes by State they are in. |
| * |
| * @return count |
| */ |
| @Override |
| public int getNodeCount(NodeStatus nodeStatus) { |
| return nodeStateManager.getNodeCount(nodeStatus); |
| } |
| |
| /** |
| * Returns the Number of Datanodes by State they are in. Passing null for |
| * either of the states acts like a wildcard for that state. |
| * |
| * @parem nodeOpState - The Operational State of the node |
| * @param health - The health of the node |
| * @return count |
| */ |
| @Override |
| public int getNodeCount(NodeOperationalState nodeOpState, NodeState health) { |
| return nodeStateManager.getNodeCount(nodeOpState, health); |
| } |
| |
| /** |
| * Returns the node status of a specific node. |
| * |
| * @param datanodeDetails Datanode Details |
| * @return NodeStatus for the node |
| */ |
| @Override |
| public NodeStatus getNodeStatus(DatanodeDetails datanodeDetails) |
| throws NodeNotFoundException { |
| return nodeStateManager.getNodeStatus(datanodeDetails); |
| } |
| |
| /** |
| * Set the operation state of a node. |
| * @param datanodeDetails The datanode to set the new state for |
| * @param newState The new operational state for the node |
| */ |
| @Override |
| public void setNodeOperationalState(DatanodeDetails datanodeDetails, |
| NodeOperationalState newState) throws NodeNotFoundException{ |
| setNodeOperationalState(datanodeDetails, newState, 0); |
| } |
| |
| /** |
| * Set the operation state of a node. |
| * @param datanodeDetails The datanode to set the new state for |
| * @param newState The new operational state for the node |
| * @param opStateExpiryEpocSec Seconds from the epoch when the operational |
| * state should end. Zero indicates the state |
| * never end. |
| */ |
| @Override |
| public void setNodeOperationalState(DatanodeDetails datanodeDetails, |
| NodeOperationalState newState, long opStateExpiryEpocSec) |
| throws NodeNotFoundException{ |
| nodeStateManager.setNodeOperationalState( |
| datanodeDetails, newState, opStateExpiryEpocSec); |
| } |
| |
| /** |
| * Closes this stream and releases any system resources associated with it. If |
| * the stream is already closed then invoking this method has no effect. |
| * |
| * @throws IOException if an I/O error occurs |
| */ |
| @Override |
| public void close() throws IOException { |
| unregisterMXBean(); |
| metrics.unRegister(); |
| nodeStateManager.close(); |
| } |
| |
| /** |
| * Gets the version info from SCM. |
| * |
| * @param versionRequest - version Request. |
| * @return - returns SCM version info and other required information needed by |
| * datanode. |
| */ |
| @Override |
| public VersionResponse getVersion(SCMVersionRequestProto versionRequest) { |
| return VersionResponse.newBuilder() |
| .setVersion(this.version.getVersion()) |
| .addValue(OzoneConsts.SCM_ID, |
| this.scmStorageConfig.getScmId()) |
| .addValue(OzoneConsts.CLUSTER_ID, this.scmStorageConfig.getClusterID()) |
| .build(); |
| } |
| |
| /** |
| * Register the node if the node finds that it is not registered with any |
| * SCM. |
| * |
| * @param datanodeDetails - Send datanodeDetails with Node info. |
| * This function generates and assigns new datanode ID |
| * for the datanode. This allows SCM to be run |
| * independent |
| * of Namenode if required. |
| * @param nodeReport NodeReport. |
| * @return SCMRegisteredResponseProto |
| */ |
| @Override |
| public RegisteredCommand register( |
| DatanodeDetails datanodeDetails, NodeReportProto nodeReport, |
| PipelineReportsProto pipelineReportsProto, |
| LayoutVersionProto layoutInfo) { |
| |
| if (layoutInfo != null) { |
| if (layoutInfo.getSoftwareLayoutVersion() > |
| scmLayoutVersionManager.getSoftwareLayoutVersion()) { |
| return RegisteredCommand.newBuilder() |
| .setErrorCode(ErrorCode.errorNodeNotPermitted) |
| .setDatanode(datanodeDetails) |
| .setClusterID(this.scmStorageConfig.getClusterID()) |
| .build(); |
| } |
| } |
| if (!isNodeRegistered(datanodeDetails)) { |
| InetAddress dnAddress = Server.getRemoteIp(); |
| if (dnAddress != null) { |
| // Mostly called inside an RPC, update ip and peer hostname |
| datanodeDetails.setHostName(dnAddress.getHostName()); |
| datanodeDetails.setIpAddress(dnAddress.getHostAddress()); |
| } |
| try { |
| String dnsName; |
| String networkLocation; |
| datanodeDetails.setNetworkName(datanodeDetails.getUuidString()); |
| if (useHostname) { |
| dnsName = datanodeDetails.getHostName(); |
| } else { |
| dnsName = datanodeDetails.getIpAddress(); |
| } |
| networkLocation = nodeResolve(dnsName); |
| if (networkLocation != null) { |
| datanodeDetails.setNetworkLocation(networkLocation); |
| } |
| |
| clusterMap.add(datanodeDetails); |
| nodeStateManager.addNode(datanodeDetails, layoutInfo); |
| // Check that datanode in nodeStateManager has topology parent set |
| DatanodeDetails dn = nodeStateManager.getNode(datanodeDetails); |
| Preconditions.checkState(dn.getParent() != null); |
| addEntryTodnsToUuidMap(dnsName, datanodeDetails.getUuidString()); |
| // Updating Node Report, as registration is successful |
| processNodeReport(datanodeDetails, nodeReport); |
| LOG.info("Registered Data node : {}", datanodeDetails); |
| } catch (NodeAlreadyExistsException e) { |
| if (LOG.isTraceEnabled()) { |
| LOG.trace("Datanode is already registered. Datanode: {}", |
| datanodeDetails.toString()); |
| } |
| } catch (NodeNotFoundException e) { |
| LOG.error("Cannot find datanode {} from nodeStateManager", |
| datanodeDetails.toString()); |
| } |
| } |
| |
| return RegisteredCommand.newBuilder().setErrorCode(ErrorCode.success) |
| .setDatanode(datanodeDetails) |
| .setClusterID(this.scmStorageConfig.getClusterID()) |
| .build(); |
| } |
| |
| /** |
| * Add an entry to the dnsToUuidMap, which maps hostname / IP to the DNs |
| * running on that host. As each address can have many DNs running on it, |
| * this is a one to many mapping. |
| * |
| * @param dnsName String representing the hostname or IP of the node |
| * @param uuid String representing the UUID of the registered node. |
| */ |
| @SuppressFBWarnings(value = "AT_OPERATION_SEQUENCE_ON_CONCURRENT_ABSTRACTION", |
| justification = "The method is synchronized and this is the only place " + |
| "dnsToUuidMap is modified") |
| private synchronized void addEntryTodnsToUuidMap( |
| String dnsName, String uuid) { |
| Set<String> dnList = dnsToUuidMap.get(dnsName); |
| if (dnList == null) { |
| dnList = ConcurrentHashMap.newKeySet(); |
| dnsToUuidMap.put(dnsName, dnList); |
| } |
| dnList.add(uuid); |
| } |
| |
| /** |
| * Send heartbeat to indicate the datanode is alive and doing well. |
| * |
| * @param datanodeDetails - DatanodeDetailsProto. |
| * @param layoutInfo - Layout Version Proto. |
| * @return SCMheartbeat response. |
| */ |
| @Override |
| public List<SCMCommand> processHeartbeat(DatanodeDetails datanodeDetails, |
| LayoutVersionProto layoutInfo) { |
| Preconditions.checkNotNull(datanodeDetails, "Heartbeat is missing " + |
| "DatanodeDetails."); |
| try { |
| nodeStateManager.updateLastHeartbeatTime(datanodeDetails); |
| nodeStateManager.updateLastKnownLayoutVersion(datanodeDetails, |
| layoutInfo); |
| metrics.incNumHBProcessed(); |
| updateDatanodeOpState(datanodeDetails); |
| } catch (NodeNotFoundException e) { |
| metrics.incNumHBProcessingFailed(); |
| LOG.error("SCM trying to process heartbeat from an " + |
| "unregistered node {}. Ignoring the heartbeat.", datanodeDetails); |
| } |
| return commandQueue.getCommand(datanodeDetails.getUuid()); |
| } |
| |
| /** |
| * If the operational state or expiry reported in the datanode heartbeat do |
| * not match those store in SCM, queue a command to update the state persisted |
| * on the datanode. Additionally, ensure the datanodeDetails stored in SCM |
| * match those reported in the heartbeat. |
| * This method should only be called when processing the |
| * heartbeat, and for a registered node, the information stored in SCM is the |
| * source of truth. |
| * @param reportedDn The DatanodeDetails taken from the node heartbeat. |
| * @throws NodeNotFoundException |
| */ |
| private void updateDatanodeOpState(DatanodeDetails reportedDn) |
| throws NodeNotFoundException { |
| NodeStatus scmStatus = getNodeStatus(reportedDn); |
| if (scmStatus.getOperationalState() != reportedDn.getPersistedOpState() |
| || scmStatus.getOpStateExpiryEpochSeconds() |
| != reportedDn.getPersistedOpStateExpiryEpochSec()) { |
| LOG.info("Scheduling a command to update the operationalState " + |
| "persisted on the datanode as the reported value ({}, {}) does not " + |
| "match the value stored in SCM ({}, {})", |
| reportedDn.getPersistedOpState(), |
| reportedDn.getPersistedOpStateExpiryEpochSec(), |
| scmStatus.getOperationalState(), |
| scmStatus.getOpStateExpiryEpochSeconds()); |
| commandQueue.addCommand(reportedDn.getUuid(), |
| new SetNodeOperationalStateCommand( |
| Time.monotonicNow(), scmStatus.getOperationalState(), |
| scmStatus.getOpStateExpiryEpochSeconds())); |
| } |
| DatanodeDetails scmDnd = nodeStateManager.getNode(reportedDn); |
| scmDnd.setPersistedOpStateExpiryEpochSec( |
| reportedDn.getPersistedOpStateExpiryEpochSec()); |
| scmDnd.setPersistedOpState(reportedDn.getPersistedOpState()); |
| } |
| |
| @Override |
| public Boolean isNodeRegistered(DatanodeDetails datanodeDetails) { |
| try { |
| nodeStateManager.getNode(datanodeDetails); |
| return true; |
| } catch (NodeNotFoundException e) { |
| return false; |
| } |
| } |
| |
| /** |
| * Process node report. |
| * |
| * @param datanodeDetails |
| * @param nodeReport |
| */ |
| @Override |
| public void processNodeReport(DatanodeDetails datanodeDetails, |
| NodeReportProto nodeReport) { |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("Processing node report from [datanode={}]", |
| datanodeDetails.getHostName()); |
| } |
| if (LOG.isTraceEnabled()) { |
| LOG.trace("HB is received from [datanode={}]: <json>{}</json>", |
| datanodeDetails.getHostName(), |
| nodeReport.toString().replaceAll("\n", "\\\\n")); |
| } |
| try { |
| DatanodeInfo datanodeInfo = nodeStateManager.getNode(datanodeDetails); |
| if (nodeReport != null) { |
| datanodeInfo.updateStorageReports(nodeReport.getStorageReportList()); |
| datanodeInfo.updateMetaDataStorageReports(nodeReport. |
| getMetadataStorageReportList()); |
| metrics.incNumNodeReportProcessed(); |
| } |
| } catch (NodeNotFoundException e) { |
| metrics.incNumNodeReportProcessingFailed(); |
| LOG.warn("Got node report from unregistered datanode {}", |
| datanodeDetails); |
| } |
| } |
| |
| /** |
| * Process Layout Version report. |
| * |
| * @param datanodeDetails |
| * @param layoutVersionReport |
| */ |
| @Override |
| public void processLayoutVersionReport(DatanodeDetails datanodeDetails, |
| LayoutVersionProto layoutVersionReport) { |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("Processing Layout Version report from [datanode={}]", |
| datanodeDetails.getHostName()); |
| } |
| if (LOG.isTraceEnabled()) { |
| LOG.trace("HB is received from [datanode={}]: <json>{}</json>", |
| datanodeDetails.getHostName(), |
| layoutVersionReport.toString().replaceAll("\n", "\\\\n")); |
| } |
| |
| if (layoutVersionReport != null) { |
| int scmSlv = scmLayoutVersionManager.getSoftwareLayoutVersion(); |
| int scmMlv = scmLayoutVersionManager.getMetadataLayoutVersion(); |
| int dnSlv = layoutVersionReport.getSoftwareLayoutVersion(); |
| int dnMlv = layoutVersionReport.getMetadataLayoutVersion(); |
| |
| // If the data node slv is > scm slv => log error condition |
| if (dnSlv > scmSlv) { |
| LOG.error("Rogue data node in the cluster : {}. " + |
| "DataNode SoftwareLayoutVersion = {}, SCM " + |
| "SoftwareLayoutVersion = {}", |
| datanodeDetails.getHostName(), dnSlv, scmSlv); |
| } |
| |
| // If the datanode slv < scm slv, it can not be allowed to be part of |
| // any pipeline. However it can be allowed to join the cluster |
| if (dnMlv < scmMlv) { |
| LOG.warn("Data node {} can not be used in any pipeline in the " + |
| "cluster. " + "DataNode MetadataLayoutVersion = {}, SCM " + |
| "MetadataLayoutVersion = {}", |
| datanodeDetails.getHostName(), dnMlv, scmMlv); |
| |
| // Send Finalize command to the data node. Its OK to |
| // send Finalize command multiple times. |
| scmNodeEventPublisher.fireEvent(SCMEvents.DATANODE_COMMAND, |
| new CommandForDatanode<>(datanodeDetails.getUuid(), |
| new FinalizeNewLayoutVersionCommand(true, |
| LayoutVersionProto.newBuilder() |
| .setSoftwareLayoutVersion(dnSlv) |
| .setMetadataLayoutVersion(dnSlv).build()))); |
| } |
| } |
| } |
| |
| /** |
| * Returns the aggregated node stats. |
| * |
| * @return the aggregated node stats. |
| */ |
| @Override |
| public SCMNodeStat getStats() { |
| long capacity = 0L; |
| long used = 0L; |
| long remaining = 0L; |
| |
| for (SCMNodeStat stat : getNodeStats().values()) { |
| capacity += stat.getCapacity().get(); |
| used += stat.getScmUsed().get(); |
| remaining += stat.getRemaining().get(); |
| } |
| return new SCMNodeStat(capacity, used, remaining); |
| } |
| |
| /** |
| * Return a map of node stats. |
| * |
| * @return a map of individual node stats (live/stale but not dead). |
| */ |
| @Override |
| public Map<DatanodeDetails, SCMNodeStat> getNodeStats() { |
| |
| final Map<DatanodeDetails, SCMNodeStat> nodeStats = new HashMap<>(); |
| |
| final List<DatanodeInfo> healthyNodes = nodeStateManager |
| .getNodes(null, HEALTHY); |
| final List<DatanodeInfo> healthyReadOnlyNodes = nodeStateManager |
| .getNodes(null, HEALTHY_READONLY); |
| final List<DatanodeInfo> staleNodes = nodeStateManager |
| .getStaleNodes(); |
| final List<DatanodeInfo> datanodes = new ArrayList<>(healthyNodes); |
| datanodes.addAll(healthyReadOnlyNodes); |
| datanodes.addAll(staleNodes); |
| |
| for (DatanodeInfo dnInfo : datanodes) { |
| SCMNodeStat nodeStat = getNodeStatInternal(dnInfo); |
| if (nodeStat != null) { |
| nodeStats.put(dnInfo, nodeStat); |
| } |
| } |
| return nodeStats; |
| } |
| |
| /** |
| * Return the node stat of the specified datanode. |
| * |
| * @param datanodeDetails - datanode ID. |
| * @return node stat if it is live/stale, null if it is decommissioned or |
| * doesn't exist. |
| */ |
| @Override |
| public SCMNodeMetric getNodeStat(DatanodeDetails datanodeDetails) { |
| final SCMNodeStat nodeStat = getNodeStatInternal(datanodeDetails); |
| return nodeStat != null ? new SCMNodeMetric(nodeStat) : null; |
| } |
| |
| private SCMNodeStat getNodeStatInternal(DatanodeDetails datanodeDetails) { |
| try { |
| long capacity = 0L; |
| long used = 0L; |
| long remaining = 0L; |
| |
| final DatanodeInfo datanodeInfo = nodeStateManager |
| .getNode(datanodeDetails); |
| final List<StorageReportProto> storageReportProtos = datanodeInfo |
| .getStorageReports(); |
| for (StorageReportProto reportProto : storageReportProtos) { |
| capacity += reportProto.getCapacity(); |
| used += reportProto.getScmUsed(); |
| remaining += reportProto.getRemaining(); |
| } |
| return new SCMNodeStat(capacity, used, remaining); |
| } catch (NodeNotFoundException e) { |
| LOG.warn("Cannot generate NodeStat, datanode {} not found.", |
| datanodeDetails.getUuid()); |
| return null; |
| } |
| } |
| |
| @Override // NodeManagerMXBean |
| public Map<String, Map<String, Integer>> getNodeCount() { |
| Map<String, Map<String, Integer>> nodes = new HashMap<>(); |
| for (NodeOperationalState opState : NodeOperationalState.values()) { |
| Map<String, Integer> states = new HashMap<>(); |
| for (NodeState health : NodeState.values()) { |
| states.put(health.name(), 0); |
| } |
| nodes.put(opState.name(), states); |
| } |
| for (DatanodeInfo dni : nodeStateManager.getAllNodes()) { |
| NodeStatus status = dni.getNodeStatus(); |
| nodes.get(status.getOperationalState().name()) |
| .compute(status.getHealth().name(), (k, v) -> v+1); |
| } |
| return nodes; |
| } |
| |
| // We should introduce DISK, SSD, etc., notion in |
| // SCMNodeStat and try to use it. |
| @Override // NodeManagerMXBean |
| public Map<String, Long> getNodeInfo() { |
| Map<String, Long> nodeInfo = new HashMap<>(); |
| // Compute all the possible stats from the enums, and default to zero: |
| for (UsageStates s : UsageStates.values()) { |
| for (UsageMetrics stat : UsageMetrics.values()) { |
| nodeInfo.put(s.label + stat.name(), 0L); |
| } |
| } |
| |
| for (DatanodeInfo node : nodeStateManager.getAllNodes()) { |
| String keyPrefix = ""; |
| NodeStatus status = node.getNodeStatus(); |
| if (status.isMaintenance()) { |
| keyPrefix = UsageStates.MAINT.getLabel(); |
| } else if (status.isDecommission()) { |
| keyPrefix = UsageStates.DECOM.getLabel(); |
| } else if (status.isAlive()) { |
| // Inservice but not dead |
| keyPrefix = UsageStates.ONLINE.getLabel(); |
| } else { |
| // dead inservice node, skip it |
| continue; |
| } |
| List<StorageReportProto> storageReportProtos = node.getStorageReports(); |
| for (StorageReportProto reportProto : storageReportProtos) { |
| if (reportProto.getStorageType() == |
| StorageContainerDatanodeProtocolProtos.StorageTypeProto.DISK) { |
| nodeInfo.compute(keyPrefix + UsageMetrics.DiskCapacity.name(), |
| (k, v) -> v + reportProto.getCapacity()); |
| nodeInfo.compute(keyPrefix + UsageMetrics.DiskRemaining.name(), |
| (k, v) -> v + reportProto.getRemaining()); |
| nodeInfo.compute(keyPrefix + UsageMetrics.DiskUsed.name(), |
| (k, v) -> v + reportProto.getScmUsed()); |
| } else if (reportProto.getStorageType() == |
| StorageContainerDatanodeProtocolProtos.StorageTypeProto.SSD) { |
| nodeInfo.compute(keyPrefix + UsageMetrics.SSDCapacity.name(), |
| (k, v) -> v + reportProto.getCapacity()); |
| nodeInfo.compute(keyPrefix + UsageMetrics.SSDRemaining.name(), |
| (k, v) -> v + reportProto.getRemaining()); |
| nodeInfo.compute(keyPrefix + UsageMetrics.SSDUsed.name(), |
| (k, v) -> v + reportProto.getScmUsed()); |
| } |
| } |
| } |
| return nodeInfo; |
| } |
| |
| private enum UsageMetrics { |
| DiskCapacity, |
| DiskUsed, |
| DiskRemaining, |
| SSDCapacity, |
| SSDUsed, |
| SSDRemaining |
| } |
| |
| private enum UsageStates { |
| ONLINE(""), |
| MAINT("Maintenance"), |
| DECOM("Decommissioned"); |
| |
| private final String label; |
| |
| public String getLabel() { |
| return label; |
| } |
| |
| UsageStates(String label) { |
| this.label = label; |
| } |
| } |
| |
| /** |
| * Returns the min of no healthy volumes reported out of the set |
| * of datanodes constituting the pipeline. |
| */ |
| @Override |
| public int minHealthyVolumeNum(List<DatanodeDetails> dnList) { |
| List<Integer> volumeCountList = new ArrayList<>(dnList.size()); |
| for (DatanodeDetails dn : dnList) { |
| try { |
| volumeCountList.add(nodeStateManager.getNode(dn). |
| getHealthyVolumeCount()); |
| } catch (NodeNotFoundException e) { |
| LOG.warn("Cannot generate NodeStat, datanode {} not found.", |
| dn.getUuid()); |
| } |
| } |
| Preconditions.checkArgument(!volumeCountList.isEmpty()); |
| return Collections.min(volumeCountList); |
| } |
| |
| /** |
| * Returns the pipeline limit for the datanode. |
| * if the datanode pipeline limit is set, consider that as the max |
| * pipeline limit. |
| * In case, the pipeline limit is not set, the max pipeline limit |
| * will be based on the no of raft log volume reported and provided |
| * that it has atleast one healthy data volume. |
| */ |
| @Override |
| public int pipelineLimit(DatanodeDetails dn) { |
| try { |
| if (heavyNodeCriteria > 0) { |
| return heavyNodeCriteria; |
| } else if (nodeStateManager.getNode(dn).getHealthyVolumeCount() > 0) { |
| return numPipelinesPerMetadataVolume * |
| nodeStateManager.getNode(dn).getMetaDataVolumeCount(); |
| } |
| } catch (NodeNotFoundException e) { |
| LOG.warn("Cannot generate NodeStat, datanode {} not found.", |
| dn.getUuid()); |
| } |
| return 0; |
| } |
| |
| /** |
| * Returns the pipeline limit for set of datanodes. |
| */ |
| @Override |
| public int minPipelineLimit(List<DatanodeDetails> dnList) { |
| List<Integer> pipelineCountList = new ArrayList<>(dnList.size()); |
| for (DatanodeDetails dn : dnList) { |
| pipelineCountList.add(pipelineLimit(dn)); |
| } |
| Preconditions.checkArgument(!pipelineCountList.isEmpty()); |
| return Collections.min(pipelineCountList); |
| } |
| |
| /** |
| * Get set of pipelines a datanode is part of. |
| * |
| * @param datanodeDetails - datanodeID |
| * @return Set of PipelineID |
| */ |
| @Override |
| public Set<PipelineID> getPipelines(DatanodeDetails datanodeDetails) { |
| return nodeStateManager.getPipelineByDnID(datanodeDetails.getUuid()); |
| } |
| |
| /** |
| * Get the count of pipelines a datanodes is associated with. |
| * @param datanodeDetails DatanodeDetails |
| * @return The number of pipelines |
| */ |
| @Override |
| public int getPipelinesCount(DatanodeDetails datanodeDetails) { |
| return nodeStateManager.getPipelinesCount(datanodeDetails); |
| } |
| |
| /** |
| * Add pipeline information in the NodeManager. |
| * |
| * @param pipeline - Pipeline to be added |
| */ |
| @Override |
| public void addPipeline(Pipeline pipeline) { |
| nodeStateManager.addPipeline(pipeline); |
| } |
| |
| /** |
| * Remove a pipeline information from the NodeManager. |
| * |
| * @param pipeline - Pipeline to be removed |
| */ |
| @Override |
| public void removePipeline(Pipeline pipeline) { |
| nodeStateManager.removePipeline(pipeline); |
| } |
| |
| @Override |
| public void addContainer(final DatanodeDetails datanodeDetails, |
| final ContainerID containerId) |
| throws NodeNotFoundException { |
| nodeStateManager.addContainer(datanodeDetails.getUuid(), containerId); |
| } |
| |
| /** |
| * Update set of containers available on a datanode. |
| * |
| * @param datanodeDetails - DatanodeID |
| * @param containerIds - Set of containerIDs |
| * @throws NodeNotFoundException - if datanode is not known. For new datanode |
| * use addDatanodeInContainerMap call. |
| */ |
| @Override |
| public void setContainers(DatanodeDetails datanodeDetails, |
| Set<ContainerID> containerIds) throws NodeNotFoundException { |
| nodeStateManager.setContainers(datanodeDetails.getUuid(), |
| containerIds); |
| } |
| |
| /** |
| * Return set of containerIDs available on a datanode. |
| * |
| * @param datanodeDetails - DatanodeID |
| * @return - set of containerIDs |
| */ |
| @Override |
| public Set<ContainerID> getContainers(DatanodeDetails datanodeDetails) |
| throws NodeNotFoundException { |
| return nodeStateManager.getContainers(datanodeDetails.getUuid()); |
| } |
| |
| // TODO: |
| // Since datanode commands are added through event queue, onMessage method |
| // should take care of adding commands to command queue. |
| // Refactor and remove all the usage of this method and delete this method. |
| @Override |
| public void addDatanodeCommand(UUID dnId, SCMCommand command) { |
| this.commandQueue.addCommand(dnId, command); |
| } |
| |
| /** |
| * This method is called by EventQueue whenever someone adds a new |
| * DATANODE_COMMAND to the Queue. |
| * |
| * @param commandForDatanode DatanodeCommand |
| * @param ignored publisher |
| */ |
| @Override |
| public void onMessage(CommandForDatanode commandForDatanode, |
| EventPublisher ignored) { |
| addDatanodeCommand(commandForDatanode.getDatanodeId(), |
| commandForDatanode.getCommand()); |
| } |
| |
| @Override |
| public List<SCMCommand> getCommandQueue(UUID dnID) { |
| return commandQueue.getCommand(dnID); |
| } |
| |
| /** |
| * Given datanode uuid, returns the DatanodeDetails for the node. |
| * |
| * @param uuid node host address |
| * @return the given datanode, or null if not found |
| */ |
| @Override |
| public DatanodeDetails getNodeByUuid(String uuid) { |
| if (Strings.isNullOrEmpty(uuid)) { |
| LOG.warn("uuid is null"); |
| return null; |
| } |
| DatanodeDetails temp = DatanodeDetails.newBuilder() |
| .setUuid(UUID.fromString(uuid)).build(); |
| try { |
| return nodeStateManager.getNode(temp); |
| } catch (NodeNotFoundException e) { |
| LOG.warn("Cannot find node for uuid {}", uuid); |
| return null; |
| } |
| } |
| |
| /** |
| * Given datanode address(Ipaddress or hostname), return a list of |
| * DatanodeDetails for the datanodes registered on that address. |
| * |
| * @param address datanode address |
| * @return the given datanode, or empty list if none found |
| */ |
| @Override |
| public List<DatanodeDetails> getNodesByAddress(String address) { |
| List<DatanodeDetails> results = new LinkedList<>(); |
| if (Strings.isNullOrEmpty(address)) { |
| LOG.warn("address is null"); |
| return results; |
| } |
| Set<String> uuids = dnsToUuidMap.get(address); |
| if (uuids == null) { |
| LOG.warn("Cannot find node for address {}", address); |
| return results; |
| } |
| |
| for (String uuid : uuids) { |
| DatanodeDetails temp = DatanodeDetails.newBuilder() |
| .setUuid(UUID.fromString(uuid)).build(); |
| try { |
| results.add(nodeStateManager.getNode(temp)); |
| } catch (NodeNotFoundException e) { |
| LOG.warn("Cannot find node for uuid {}", uuid); |
| } |
| } |
| return results; |
| } |
| |
| /** |
| * Get cluster map as in network topology for this node manager. |
| * @return cluster map |
| */ |
| @Override |
| public NetworkTopology getClusterNetworkTopologyMap() { |
| return clusterMap; |
| } |
| |
| private String nodeResolve(String hostname) { |
| List<String> hosts = new ArrayList<>(1); |
| hosts.add(hostname); |
| List<String> resolvedHosts = dnsToSwitchMapping.resolve(hosts); |
| if (resolvedHosts != null && !resolvedHosts.isEmpty()) { |
| String location = resolvedHosts.get(0); |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("Resolve datanode {} return location {}", hostname, location); |
| } |
| return location; |
| } else { |
| LOG.error("Node {} Resolution failed. Please make sure that DNS table " + |
| "mapping or configured mapping is functional.", hostname); |
| return null; |
| } |
| } |
| |
| /** |
| * Test utility to stop heartbeat check process. |
| * |
| * @return ScheduledFuture of next scheduled check that got cancelled. |
| */ |
| @VisibleForTesting |
| ScheduledFuture pauseHealthCheck() { |
| return nodeStateManager.pause(); |
| } |
| |
| /** |
| * Test utility to resume the paused heartbeat check process. |
| * |
| * @return ScheduledFuture of the next scheduled check |
| */ |
| @VisibleForTesting |
| ScheduledFuture unpauseHealthCheck() { |
| return nodeStateManager.unpause(); |
| } |
| |
| /** |
| * Test utility to get the count of skipped heartbeat check iterations. |
| * |
| * @return count of skipped heartbeat check iterations |
| */ |
| @VisibleForTesting |
| long getSkippedHealthChecks() { |
| return nodeStateManager.getSkippedHealthChecks(); |
| } |
| |
| /** |
| * @return HDDSLayoutVersionManager |
| */ |
| @VisibleForTesting |
| @Override |
| public HDDSLayoutVersionManager getLayoutVersionManager() { |
| return scmLayoutVersionManager; |
| } |
| |
| @VisibleForTesting |
| @Override |
| public void forceNodesToHealthyReadOnly() { |
| nodeStateManager.forceNodesToHealthyReadOnly(); |
| } |
| } |
