| /* |
| * 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.drill.exec.physical.impl.join; |
| |
| import org.apache.drill.shaded.guava.com.google.common.base.Preconditions; |
| import org.apache.drill.exec.record.RecordBatch; |
| import org.apache.drill.exec.record.RecordBatchSizer; |
| import org.apache.drill.exec.vector.IntVector; |
| |
| public class HashJoinHelperSizeCalculatorImpl implements HashJoinHelperSizeCalculator { |
| public static final HashJoinHelperSizeCalculatorImpl INSTANCE = new HashJoinHelperSizeCalculatorImpl(); |
| |
| private HashJoinHelperSizeCalculatorImpl() { |
| // Do nothing |
| } |
| |
| @Override |
| public long calculateSize(HashJoinMemoryCalculator.PartitionStat partitionStat, double fragmentationFactor) { |
| Preconditions.checkArgument(!partitionStat.isSpilled()); |
| |
| // Account for the size of the SV4 in a hash join helper |
| long joinHelperSize = IntVector.VALUE_WIDTH * RecordBatch.MAX_BATCH_ROW_COUNT; |
| |
| // Account for the SV4 for each batch that holds links for each batch |
| for (HashJoinMemoryCalculator.BatchStat batchStat: partitionStat.getInMemoryBatches()) { |
| // Note we don't have to round up to nearest power of 2, since we allocate the exact |
| // space needed for the value vector. |
| joinHelperSize += batchStat.getNumRecords() * IntVector.VALUE_WIDTH; |
| } |
| |
| // Note the BitSets of the HashJoin helper are stored on heap, so we don't account for them here. |
| // TODO move BitSets to direct memory |
| |
| return RecordBatchSizer.multiplyByFactor(joinHelperSize, fragmentationFactor); |
| } |
| } |