| /* |
| * 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 com.google.common.base.Preconditions; |
| import com.google.common.collect.Lists; |
| |
| import java.util.Collections; |
| import java.util.LinkedList; |
| import java.util.List; |
| |
| /** |
| * This class represents the memory size statistics for an entire partition. |
| */ |
| public class PartitionStatImpl implements HashJoinMemoryCalculator.PartitionStat { |
| private boolean spilled; |
| private long numRecords; |
| private long partitionSize; |
| private LinkedList<HashJoinMemoryCalculator.BatchStat> batchStats = Lists.newLinkedList(); |
| |
| public PartitionStatImpl() { |
| } |
| |
| public void add(HashJoinMemoryCalculator.BatchStat batchStat) { |
| Preconditions.checkState(!spilled); |
| Preconditions.checkNotNull(batchStat); |
| partitionSize += batchStat.getBatchSize(); |
| numRecords += batchStat.getNumRecords(); |
| batchStats.addLast(batchStat); |
| } |
| |
| public void spill() { |
| Preconditions.checkState(!spilled); |
| spilled = true; |
| partitionSize = 0; |
| numRecords = 0; |
| batchStats.clear(); |
| } |
| |
| public List<HashJoinMemoryCalculator.BatchStat> getInMemoryBatches() |
| { |
| return Collections.unmodifiableList(batchStats); |
| } |
| |
| public int getNumInMemoryBatches() |
| { |
| return batchStats.size(); |
| } |
| |
| public boolean isSpilled() |
| { |
| return spilled; |
| } |
| |
| public long getNumInMemoryRecords() |
| { |
| return numRecords; |
| } |
| |
| public long getInMemorySize() |
| { |
| return partitionSize; |
| } |
| } |