[GitHub] [incubator-doris] xy720 commented on a change in pull request #3191: DeleteV2

[GitBox <gi...@apache.org>]

xy720 commented on a change in pull request #3191: DeleteV2
URL: https://github.com/apache/incubator-doris/pull/3191#discussion_r406808944
 
 

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 File path: fe/src/main/java/org/apache/doris/load/DeleteHandler.java
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+// 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.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.DeleteTask;
+import org.apache.doris.task.MasterTaskExecutor;
+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.doris.transaction.TransactionStatus;
+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.HashSet;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+import java.util.Map.Entry;
+import java.util.Set;
+import java.util.UUID;
+import java.util.concurrent.BlockingQueue;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.concurrent.locks.ReentrantReadWriteLock;
+
+public class DeleteHandler implements Writable {
+    private static final Logger LOG = LogManager.getLogger(DeleteHandler.class);
+
+    // TransactionId -> DeleteTask
+    private Map<Long, DeleteTask> idToDeleteTask;
+
+    // Db -> DeleteInfo list
+    private Map<Long, List<DeleteInfo>> dbToDeleteInfos;
+
+    private MasterTaskExecutor executor;
+
+    private BlockingQueue<DeleteTask> queue;
+
+    private DeleteTaskChecker checker;
+
+    private ReentrantReadWriteLock lock;
+
+    public void readLock() {
+        lock.readLock().lock();
+    }
+
+    public void readUnlock() {
+        lock.readLock().unlock();
+    }
+
+    private void writeLock() {
+        lock.writeLock().lock();
+    }
+
+    private void writeUnlock() {
+        lock.writeLock().unlock();
+    }
+
+
+    public DeleteHandler() {
+        idToDeleteTask = Maps.newHashMap();
+        dbToDeleteInfos = Maps.newHashMap();
+        executor = new MasterTaskExecutor(Config.delete_thread_num);
+        queue = new LinkedBlockingQueue(Config.delete_thread_num);
+        lock = new ReentrantReadWriteLock(true);
+        // start checker
+        checker = new DeleteTaskChecker(queue);
+        checker.start();
+    }
+
+    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);
+        }
+
+        DeleteTask deleteTask = null;
+        DeleteInfo deleteInfo = null;
+        long transactionId;
+        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);
+
+            TransactionState state = Catalog.getCurrentGlobalTransactionMgr()
+                    .getTransactionState(transactionId);
+            if (state == null) {
 
 Review comment:
   I've deleted it

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