xy720 commented on a change in pull request #3191: [Optimize][Delete] Simplify the delete process to make it fast URL: https://github.com/apache/incubator-doris/pull/3191#discussion_r408763091
########## File path: fe/src/main/java/org/apache/doris/load/DeleteHandler.java ########## @@ -0,0 +1,549 @@ +// 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.doris.load; + +import com.google.common.base.Joiner; +import com.google.common.collect.Lists; +import com.google.common.collect.Maps; +import org.apache.doris.analysis.BinaryPredicate; +import org.apache.doris.analysis.DeleteStmt; +import org.apache.doris.analysis.IsNullPredicate; +import org.apache.doris.analysis.LiteralExpr; +import org.apache.doris.analysis.Predicate; +import org.apache.doris.analysis.SlotRef; +import org.apache.doris.catalog.Catalog; +import org.apache.doris.catalog.Column; +import org.apache.doris.catalog.Database; +import org.apache.doris.catalog.KeysType; +import org.apache.doris.catalog.MaterializedIndex; +import org.apache.doris.catalog.MaterializedIndex.IndexExtState; +import org.apache.doris.catalog.OlapTable; +import org.apache.doris.catalog.Partition; +import org.apache.doris.catalog.PartitionType; +import org.apache.doris.catalog.Replica; +import org.apache.doris.catalog.Table; +import org.apache.doris.catalog.Tablet; +import org.apache.doris.catalog.TabletInvertedIndex; +import org.apache.doris.catalog.Type; +import org.apache.doris.common.AnalysisException; +import org.apache.doris.common.Config; +import org.apache.doris.common.DdlException; +import org.apache.doris.common.ErrorCode; +import org.apache.doris.common.ErrorReport; +import org.apache.doris.common.MarkedCountDownLatch; +import org.apache.doris.common.UserException; +import org.apache.doris.common.io.Writable; +import org.apache.doris.common.util.ListComparator; +import org.apache.doris.common.util.TimeUtils; +import org.apache.doris.mysql.privilege.PrivPredicate; +import org.apache.doris.qe.ConnectContext; +import org.apache.doris.service.FrontendOptions; +import org.apache.doris.task.AgentBatchTask; +import org.apache.doris.task.AgentTaskExecutor; +import org.apache.doris.task.AgentTaskQueue; +import org.apache.doris.task.DeleteJob; +import org.apache.doris.task.DeleteJob.DeleteState; +import org.apache.doris.task.PushTask; +import org.apache.doris.thrift.TPriority; +import org.apache.doris.thrift.TPushType; +import org.apache.doris.thrift.TTaskType; +import org.apache.doris.transaction.GlobalTransactionMgr; +import org.apache.doris.transaction.TabletCommitInfo; +import org.apache.doris.transaction.TransactionState; +import org.apache.logging.log4j.LogManager; +import org.apache.logging.log4j.Logger; + +import java.io.DataInput; +import java.io.DataOutput; +import java.io.IOException; +import java.util.ArrayList; +import java.util.Collections; +import java.util.LinkedList; +import java.util.List; +import java.util.Map; +import java.util.Map.Entry; +import java.util.UUID; +import java.util.concurrent.TimeUnit; + +public class DeleteHandler implements Writable { + private static final Logger LOG = LogManager.getLogger(DeleteHandler.class); + + // TransactionId -> DeleteJob + private Map<Long, DeleteJob> idToDeleteJob; + + // Db -> DeleteInfo list + private Map<Long, List<DeleteInfo>> dbToDeleteInfos; + + public DeleteHandler() { + idToDeleteJob = Maps.newConcurrentMap(); + dbToDeleteInfos = Maps.newConcurrentMap(); + } + + public void process(DeleteStmt stmt) throws DdlException { + String dbName = stmt.getDbName(); + String tableName = stmt.getTableName(); + String partitionName = stmt.getPartitionName(); + List<Predicate> conditions = stmt.getDeleteConditions(); + Database db = Catalog.getInstance().getDb(dbName); + if (db == null) { + throw new DdlException("Db does not exist. name: " + dbName); + } + + DeleteJob deleteJob = null; + DeleteInfo deleteInfo = null; + long transactionId; + MarkedCountDownLatch<Long, Long> countDownLatch; + db.readLock(); + try { + Table table = db.getTable(tableName); + if (table == null) { + throw new DdlException("Table does not exist. name: " + tableName); + } + + if (table.getType() != Table.TableType.OLAP) { + throw new DdlException("Not olap type table. type: " + table.getType().name()); + } + OlapTable olapTable = (OlapTable) table; + + if (olapTable.getState() != OlapTable.OlapTableState.NORMAL) { + throw new DdlException("Table's state is not normal: " + tableName); + } + + if (partitionName == null) { + if (olapTable.getPartitionInfo().getType() == PartitionType.RANGE) { + throw new DdlException("This is a range partitioned table." + + " You should specify partition in delete stmt"); + } else { + // this is a unpartitioned table, use table name as partition name + partitionName = olapTable.getName(); + } + } + + Partition partition = olapTable.getPartition(partitionName); + if (partition == null) { + throw new DdlException("Partition does not exist. name: " + partitionName); + } + + List<String> deleteConditions = Lists.newArrayList(); + + // pre check + checkDeleteV2(olapTable, partition, conditions, deleteConditions, true); + + // generate label + String label = "delete_" + UUID.randomUUID(); + + // begin txn here and generate txn id + transactionId = Catalog.getCurrentGlobalTransactionMgr().beginTransaction(db.getId(), + Lists.newArrayList(table.getId()), label,"FE: " + FrontendOptions.getLocalHostAddress(), + TransactionState.LoadJobSourceType.FRONTEND, Config.stream_load_default_timeout_second); + + deleteInfo = new DeleteInfo(db.getId(), olapTable.getId(), tableName, + partition.getId(), partitionName, + -1, 0, deleteConditions); + deleteJob = new DeleteJob(transactionId, deleteInfo); + idToDeleteJob.put(deleteJob.getTransactionId(), deleteJob); Review comment: added a new try finally block surround outside this logic ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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