Apache9 commented on code in PR #5408: URL: https://github.com/apache/hbase/pull/5408#discussion_r1356843363
########## hbase-backup/src/main/java/org/apache/hadoop/hbase/backup/master/LogRollProcedure.java: ########## @@ -0,0 +1,215 @@ +/* + * 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.hadoop.hbase.backup.master; + +import static org.apache.hadoop.hbase.backup.BackupRestoreConstants.BACKUP_ENABLE_DEFAULT; +import static org.apache.hadoop.hbase.backup.BackupRestoreConstants.BACKUP_ENABLE_KEY; +import static org.apache.hadoop.hbase.backup.master.LogRollMasterProcedureManager.LOGROLL_PROCEDURE_ENABLED; +import static org.apache.hadoop.hbase.backup.master.LogRollMasterProcedureManager.LOGROLL_PROCEDURE_ENABLED_DEFAULT; + +import java.io.IOException; +import java.util.ArrayList; +import java.util.HashMap; +import java.util.List; +import java.util.Optional; +import org.apache.hadoop.conf.Configuration; +import org.apache.hadoop.hbase.NamespaceDescriptor; +import org.apache.hadoop.hbase.ServerName; +import org.apache.hadoop.hbase.TableName; +import org.apache.hadoop.hbase.TableNotEnabledException; +import org.apache.hadoop.hbase.backup.impl.BackupSystemTable; +import org.apache.hadoop.hbase.client.RegionInfo; +import org.apache.hadoop.hbase.client.TableDescriptor; +import org.apache.hadoop.hbase.client.TableState; +import org.apache.hadoop.hbase.master.TableStateManager; +import org.apache.hadoop.hbase.master.procedure.CreateNamespaceProcedure; +import org.apache.hadoop.hbase.master.procedure.CreateTableProcedure; +import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv; +import org.apache.hadoop.hbase.master.procedure.TableProcedureInterface; +import org.apache.hadoop.hbase.procedure2.ProcedureStateSerializer; +import org.apache.hadoop.hbase.procedure2.ProcedureSuspendedException; +import org.apache.hadoop.hbase.procedure2.ProcedureYieldException; +import org.apache.hadoop.hbase.procedure2.StateMachineProcedure; +import org.apache.hadoop.hbase.util.EnvironmentEdgeManager; +import org.apache.hadoop.hbase.util.ModifyRegionUtils; +import org.apache.yetus.audience.InterfaceAudience; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import org.apache.hadoop.hbase.shaded.protobuf.generated.BackupProtos.LogRollData; +import org.apache.hadoop.hbase.shaded.protobuf.generated.BackupProtos.LogRollState; + +@InterfaceAudience.Private +public class LogRollProcedure extends StateMachineProcedure<MasterProcedureEnv, LogRollState> + implements TableProcedureInterface { + + private static final Logger LOG = LoggerFactory.getLogger(RSLogRollProcedure.class); + + private Configuration conf; + + private String backupRoot; + + public LogRollProcedure() { + } + + public LogRollProcedure(final String backupRoot, final Configuration conf) { + this.backupRoot = backupRoot; + this.conf = conf; + } + + @Override + protected Flow executeFromState(MasterProcedureEnv env, LogRollState state) + throws ProcedureSuspendedException, ProcedureYieldException, InterruptedException { + LOG.info("{} execute state={}", this, state); + + try { + switch (state) { + case LOG_ROLL_PRE_CHECK_NAMESPACE: + // create backup namespace if not exists + if ( + !env.getMasterServices().getClusterSchema().getTableNamespaceManager() + .doesNamespaceExist(getTableName().getNamespaceAsString()) + ) { + NamespaceDescriptor desc = + NamespaceDescriptor.create(getTableName().getNamespaceAsString()).build(); + addChildProcedure(new CreateNamespaceProcedure(env, desc)); + } + setNextState(LogRollState.LOG_ROLL_PRE_CHECK_TABLES); + return Flow.HAS_MORE_STATE; + case LOG_ROLL_PRE_CHECK_TABLES: + // create backup system table and backup system bulkload table if not exists + List<CreateTableProcedure> toCreate = new ArrayList<>(); + TableStateManager tsm = env.getMasterServices().getTableStateManager(); + createIfNeeded(env, tsm, BackupSystemTable.getTableName(conf), + BackupSystemTable.getSystemTableDescriptor(conf)).ifPresent(toCreate::add); + createIfNeeded(env, tsm, BackupSystemTable.getTableNameForBulkLoadedData(conf), + BackupSystemTable.getSystemTableForBulkLoadedDataDescriptor(conf)) + .ifPresent(toCreate::add); + if (!toCreate.isEmpty()) { + addChildProcedure(toCreate.toArray(new CreateTableProcedure[0])); + } + setNextState(LogRollState.LOG_ROLL_ROLL_LOG_ON_EACH_RS); + return Flow.HAS_MORE_STATE; + case LOG_ROLL_ROLL_LOG_ON_EACH_RS: + final List<ServerName> onlineServers = + env.getMasterServices().getServerManager().getOnlineServersList(); + final List<RSLogRollProcedure> subProcedures = new ArrayList<>(onlineServers.size()); + final BackupSystemTable table = + new BackupSystemTable(env.getMasterServices().getConnection()); + final HashMap<String, Long> lastLogRollResults = + table.readRegionServerLastLogRollResult(backupRoot); + final long now = EnvironmentEdgeManager.currentTime(); + for (ServerName server : onlineServers) { + long lastLogRollResult = + lastLogRollResults.getOrDefault(server.getAddress().toString(), Long.MIN_VALUE); + if (lastLogRollResult > now) { + LOG.warn("Bad lastLogRollResult={}. reset lastLogRollResult.", lastLogRollResult); + lastLogRollResult = Long.MIN_VALUE; + } + subProcedures.add(new RSLogRollProcedure(server, backupRoot, lastLogRollResult)); + } + addChildProcedure(subProcedures.toArray(new RSLogRollProcedure[0])); + return Flow.NO_MORE_STATE; + } + } catch (Exception e) { + setFailure("log-roll", e); + } + return Flow.NO_MORE_STATE; + } + + private Optional<CreateTableProcedure> createIfNeeded(MasterProcedureEnv env, + TableStateManager tsm, TableName tableName, TableDescriptor desc) throws IOException { + if (tsm.isTablePresent(tableName)) { + TableState state = tsm.getTableState(tableName); + if (state.isEnabled()) { + return Optional.empty(); + } else { + throw new TableNotEnabledException("table=" + tableName + ", state=" + state); + } + } else { + RegionInfo[] regions = ModifyRegionUtils.createRegionInfos(desc, new byte[][] {}); + return Optional.of(new CreateTableProcedure(env, desc, regions)); + } + } + + @Override + protected void rollbackState(MasterProcedureEnv env, LogRollState state) { + // nothing to rollback + } + + @Override + protected LogRollState getState(int stateId) { + return LogRollState.forNumber(stateId); + } + + @Override + protected int getStateId(LogRollState state) { + return state.getNumber(); + } + + @Override + protected LogRollState getInitialState() { + return LogRollState.LOG_ROLL_PRE_CHECK_NAMESPACE; + } + + @Override + protected boolean abort(MasterProcedureEnv env) { + return false; + } + + @Override + protected void serializeStateData(ProcedureStateSerializer serializer) throws IOException { + serializer.serialize(LogRollData.newBuilder().setBackupRoot(backupRoot).build()); + } + + @Override + protected void deserializeStateData(ProcedureStateSerializer serializer) throws IOException { + this.backupRoot = serializer.deserialize(LogRollData.class).getBackupRoot(); + } + + @Override + public TableName getTableName() { + return BackupSystemTable.getTableName(conf); Review Comment: IIRC we have talked this before, maybe we need to discuss how to change the ProcedureScheduler first... -- This is an automated message from the Apache Git Service. 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