| /* |
| * 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 |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * 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.iotdb.db.service; |
| |
| import org.apache.iotdb.commons.client.exception.ClientManagerException; |
| import org.apache.iotdb.commons.cluster.NodeStatus; |
| import org.apache.iotdb.commons.concurrent.ThreadName; |
| import org.apache.iotdb.commons.conf.CommonDescriptor; |
| import org.apache.iotdb.consensus.ConsensusFactory; |
| import org.apache.iotdb.consensus.exception.ConsensusException; |
| import org.apache.iotdb.db.conf.IoTDBDescriptor; |
| import org.apache.iotdb.db.consensus.DataRegionConsensusImpl; |
| import org.apache.iotdb.db.consensus.SchemaRegionConsensusImpl; |
| import org.apache.iotdb.db.protocol.client.ConfigNodeClient; |
| import org.apache.iotdb.db.protocol.client.ConfigNodeClientManager; |
| import org.apache.iotdb.db.protocol.client.ConfigNodeInfo; |
| import org.apache.iotdb.db.schemaengine.SchemaEngine; |
| import org.apache.iotdb.db.schemaengine.SchemaEngineMode; |
| import org.apache.iotdb.db.storageengine.StorageEngine; |
| import org.apache.iotdb.db.storageengine.dataregion.wal.WALManager; |
| import org.apache.iotdb.db.storageengine.rescon.disk.DirectoryChecker; |
| import org.apache.iotdb.db.utils.MemUtils; |
| import org.apache.iotdb.rpc.TSStatusCode; |
| |
| import org.apache.thrift.TException; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.IOException; |
| |
| public class IoTDBShutdownHook extends Thread { |
| |
| private static final Logger logger = LoggerFactory.getLogger(IoTDBShutdownHook.class); |
| |
| public IoTDBShutdownHook() { |
| super(ThreadName.IOTDB_SHUTDOWN_HOOK.getName()); |
| } |
| |
| @Override |
| public void run() { |
| logger.info("DataNode exiting..."); |
| // Stop external rpc service firstly. |
| RPCService.getInstance().stop(); |
| |
| // Close rocksdb if possible to avoid lose data |
| if (SchemaEngineMode.valueOf(CommonDescriptor.getInstance().getConfig().getSchemaEngineMode()) |
| .equals(SchemaEngineMode.Rocksdb_based)) { |
| SchemaEngine.getInstance().clear(); |
| } |
| |
| // Reject write operations to make sure all tsfiles will be sealed |
| CommonDescriptor.getInstance().getConfig().setStopping(true); |
| CommonDescriptor.getInstance().getConfig().setNodeStatus(NodeStatus.ReadOnly); |
| // Wait all wal are flushed |
| WALManager.getInstance().waitAllWALFlushed(); |
| |
| // Flush data to Tsfile and remove WAL log files |
| if (!IoTDBDescriptor.getInstance() |
| .getConfig() |
| .getDataRegionConsensusProtocolClass() |
| .equals(ConsensusFactory.RATIS_CONSENSUS)) { |
| StorageEngine.getInstance().syncCloseAllProcessor(); |
| } |
| WALManager.getInstance().syncDeleteOutdatedFilesInWALNodes(); |
| |
| // We did this work because the RatisConsensus recovery mechanism is different from other |
| // consensus algorithms, which will replace the underlying storage engine based on its |
| // own |
| // latest snapshot, while other consensus algorithms will not. This judgement ensures that |
| // compaction work is not discarded even if there are frequent restarts |
| if (IoTDBDescriptor.getInstance() |
| .getConfig() |
| .getDataRegionConsensusProtocolClass() |
| .equals(ConsensusFactory.RATIS_CONSENSUS)) { |
| DataRegionConsensusImpl.getInstance().getAllConsensusGroupIds().parallelStream() |
| .forEach( |
| id -> { |
| try { |
| DataRegionConsensusImpl.getInstance().triggerSnapshot(id, false); |
| } catch (ConsensusException e) { |
| logger.warn( |
| "Something wrong happened while calling consensus layer's " |
| + "triggerSnapshot API.", |
| e); |
| } |
| }); |
| } |
| |
| // Close consensusImpl |
| try { |
| SchemaRegionConsensusImpl.getInstance().stop(); |
| DataRegionConsensusImpl.getInstance().stop(); |
| } catch (IOException e) { |
| logger.error("Stop ConsensusImpl error in IoTDBShutdownHook", e); |
| } |
| |
| // Clear lock file |
| DirectoryChecker.getInstance().deregisterAll(); |
| |
| // Set and report shutdown to cluster ConfigNode-leader |
| CommonDescriptor.getInstance().getConfig().setNodeStatus(NodeStatus.Unknown); |
| boolean isReportSuccess = false; |
| try (ConfigNodeClient client = |
| ConfigNodeClientManager.getInstance().borrowClient(ConfigNodeInfo.CONFIG_REGION_ID)) { |
| isReportSuccess = |
| client.reportDataNodeShutdown(DataNode.generateDataNodeLocation()).getCode() |
| == TSStatusCode.SUCCESS_STATUS.getStatusCode(); |
| |
| // Actually stop all services started by the DataNode. |
| // If we don't call this, services like the RestService are not stopped and I can't re-start |
| // it. |
| DataNode.getInstance().stop(); |
| } catch (ClientManagerException e) { |
| logger.error("Failed to borrow ConfigNodeClient", e); |
| } catch (TException e) { |
| logger.error("Failed to report shutdown", e); |
| } |
| if (!isReportSuccess) { |
| logger.error( |
| "Reporting DataNode shutdown failed. The cluster will still take the current DataNode as Running for a few seconds."); |
| } |
| |
| if (logger.isInfoEnabled()) { |
| logger.info( |
| "DataNode exits. Jvm memory usage: {}", |
| MemUtils.bytesCntToStr( |
| Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory())); |
| } |
| } |
| } |