maheshk114 commented on a change in pull request #1147: URL: https://github.com/apache/hive/pull/1147#discussion_r459208067
########## File path: ql/src/java/org/apache/hadoop/hive/ql/exec/vector/mapjoin/VectorMapJoinAntiJoinLongOperator.java ########## @@ -0,0 +1,315 @@ +/* + * 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.hive.ql.exec.vector.mapjoin; + +import org.apache.hadoop.hive.ql.CompilationOpContext; +import org.apache.hadoop.hive.ql.exec.JoinUtil; +import org.apache.hadoop.hive.ql.exec.vector.LongColumnVector; +import org.apache.hadoop.hive.ql.exec.vector.VectorizationContext; +import org.apache.hadoop.hive.ql.exec.vector.VectorizedRowBatch; +import org.apache.hadoop.hive.ql.exec.vector.expressions.VectorExpression; +import org.apache.hadoop.hive.ql.exec.vector.mapjoin.hashtable.VectorMapJoinLongHashSet; +import org.apache.hadoop.hive.ql.metadata.HiveException; +import org.apache.hadoop.hive.ql.plan.OperatorDesc; +import org.apache.hadoop.hive.ql.plan.VectorDesc; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.util.Arrays; + +// TODO : Duplicate codes need to merge with semi join. +// Single-Column Long hash table import. +// Single-Column Long specific imports. + +/* + * Specialized class for doing a vectorized map join that is an anti join on a Single-Column Long + * using a hash set. + */ +public class VectorMapJoinAntiJoinLongOperator extends VectorMapJoinAntiJoinGenerateResultOperator { + + private static final long serialVersionUID = 1L; + private static final String CLASS_NAME = VectorMapJoinAntiJoinLongOperator.class.getName(); + private static final Logger LOG = LoggerFactory.getLogger(CLASS_NAME); + protected String getLoggingPrefix() { + return super.getLoggingPrefix(CLASS_NAME); + } + + // The above members are initialized by the constructor and must not be + // transient. + + // The hash map for this specialized class. + private transient VectorMapJoinLongHashSet hashSet; + + // Single-Column Long specific members. + // For integers, we have optional min/max filtering. + private transient boolean useMinMax; + private transient long min; + private transient long max; + + // The column number for this one column join specialization. + private transient int singleJoinColumn; + + // Pass-thru constructors. + /** Kryo ctor. */ + protected VectorMapJoinAntiJoinLongOperator() { + super(); + } + + public VectorMapJoinAntiJoinLongOperator(CompilationOpContext ctx) { + super(ctx); + } + + public VectorMapJoinAntiJoinLongOperator(CompilationOpContext ctx, OperatorDesc conf, + VectorizationContext vContext, VectorDesc vectorDesc) throws HiveException { + super(ctx, conf, vContext, vectorDesc); + } + + // Process Single-Column Long Anti Join on a vectorized row batch. + @Override + protected void commonSetup() throws HiveException { + super.commonSetup(); + + // Initialize Single-Column Long members for this specialized class. + singleJoinColumn = bigTableKeyColumnMap[0]; + } + + @Override + public void hashTableSetup() throws HiveException { + super.hashTableSetup(); + + // Get our Single-Column Long hash set information for this specialized class. + hashSet = (VectorMapJoinLongHashSet) vectorMapJoinHashTable; + useMinMax = hashSet.useMinMax(); + if (useMinMax) { + min = hashSet.min(); + max = hashSet.max(); + } + } + + @Override + public void processBatch(VectorizedRowBatch batch) throws HiveException { + + try { + // (Currently none) Review comment: The pre batch processing done only for joins which emits the right table records. For semi join and anti join, it's not required. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
