| /* |
| * 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.iotdb.db.queryengine.transformation.datastructure.tv; |
| |
| import org.apache.iotdb.commons.udf.utils.UDFBinaryTransformer; |
| import org.apache.iotdb.db.queryengine.transformation.datastructure.SerializableList; |
| import org.apache.iotdb.udf.api.type.Binary; |
| |
| import org.apache.tsfile.enums.TSDataType; |
| import org.apache.tsfile.utils.BytesUtils; |
| |
| import java.io.IOException; |
| |
| public class ElasticSerializableBinaryTVList extends ElasticSerializableTVList { |
| |
| protected static final int MEMORY_CHECK_THRESHOLD = 1000; |
| |
| protected int byteArrayLengthForMemoryControl; |
| |
| protected long totalByteArrayLengthLimit; |
| protected long totalByteArrayLength; |
| |
| public ElasticSerializableBinaryTVList(String queryId, float memoryLimitInMB, int cacheSize) { |
| super(TSDataType.TEXT, queryId, memoryLimitInMB, cacheSize); |
| byteArrayLengthForMemoryControl = SerializableList.INITIAL_BYTE_ARRAY_LENGTH_FOR_MEMORY_CONTROL; |
| totalByteArrayLengthLimit = 0; |
| totalByteArrayLength = 0; |
| } |
| |
| @Override |
| public void putBinary(long timestamp, Binary value) throws IOException { |
| super.putBinary(timestamp, value); |
| totalByteArrayLengthLimit += byteArrayLengthForMemoryControl; |
| totalByteArrayLength += value.getLength(); |
| checkMemoryUsage(); |
| } |
| |
| @Override |
| public void putString(long timestamp, String value) throws IOException { |
| org.apache.tsfile.utils.Binary binary = BytesUtils.valueOf(value); |
| super.putBinary(timestamp, UDFBinaryTransformer.transformToUDFBinary(binary)); |
| totalByteArrayLengthLimit += byteArrayLengthForMemoryControl; |
| totalByteArrayLength += binary.getLength(); |
| checkMemoryUsage(); |
| } |
| |
| protected void checkMemoryUsage() throws IOException { |
| if (size % MEMORY_CHECK_THRESHOLD != 0 || totalByteArrayLength <= totalByteArrayLengthLimit) { |
| return; |
| } |
| |
| int newByteArrayLengthForMemoryControl = byteArrayLengthForMemoryControl; |
| while ((long) newByteArrayLengthForMemoryControl * size < totalByteArrayLength) { |
| newByteArrayLengthForMemoryControl *= 2; |
| } |
| int newInternalTVListCapacity = |
| SerializableBinaryTVList.calculateCapacity( |
| memoryLimitInMB, newByteArrayLengthForMemoryControl) |
| / cacheSize; |
| if (0 < newInternalTVListCapacity) { |
| applyNewMemoryControlParameters( |
| newByteArrayLengthForMemoryControl, newInternalTVListCapacity); |
| return; |
| } |
| |
| int delta = |
| (int) |
| ((totalByteArrayLength - totalByteArrayLengthLimit) |
| / size |
| / SerializableList.INITIAL_BYTE_ARRAY_LENGTH_FOR_MEMORY_CONTROL); |
| newByteArrayLengthForMemoryControl = |
| byteArrayLengthForMemoryControl |
| + 2 * (delta + 1) * SerializableList.INITIAL_BYTE_ARRAY_LENGTH_FOR_MEMORY_CONTROL; |
| newInternalTVListCapacity = |
| SerializableBinaryTVList.calculateCapacity( |
| memoryLimitInMB, newByteArrayLengthForMemoryControl) |
| / cacheSize; |
| if (0 < newInternalTVListCapacity) { |
| applyNewMemoryControlParameters( |
| newByteArrayLengthForMemoryControl, newInternalTVListCapacity); |
| return; |
| } |
| |
| throw new RuntimeException("Memory is not enough for current query."); |
| } |
| |
| protected void applyNewMemoryControlParameters( |
| int newByteArrayLengthForMemoryControl, int newInternalTVListCapacity) throws IOException { |
| ElasticSerializableTVList newElasticSerializableTVList = |
| new ElasticSerializableTVList( |
| TSDataType.TEXT, queryId, memoryLimitInMB, newInternalTVListCapacity, cacheSize); |
| |
| newElasticSerializableTVList.evictionUpperBound = evictionUpperBound; |
| int internalListEvictionUpperBound = evictionUpperBound / newInternalTVListCapacity; |
| for (int i = 0; i < internalListEvictionUpperBound; ++i) { |
| newElasticSerializableTVList.tvLists.add(null); |
| newElasticSerializableTVList.bitMaps.add(null); |
| } |
| newElasticSerializableTVList.size = internalListEvictionUpperBound * newInternalTVListCapacity; |
| org.apache.tsfile.utils.Binary empty = BytesUtils.valueOf(""); |
| for (int i = newElasticSerializableTVList.size; i < evictionUpperBound; ++i) { |
| newElasticSerializableTVList.putBinary(i, UDFBinaryTransformer.transformToUDFBinary(empty)); |
| } |
| for (int i = evictionUpperBound; i < size; ++i) { |
| if (isNull(i)) { |
| newElasticSerializableTVList.putNull(getTime(i)); |
| } else { |
| newElasticSerializableTVList.putBinary( |
| getTime(i), UDFBinaryTransformer.transformToUDFBinary(getBinary(i))); |
| } |
| } |
| |
| internalTVListCapacity = newInternalTVListCapacity; |
| cache = newElasticSerializableTVList.cache; |
| tvLists = newElasticSerializableTVList.tvLists; |
| bitMaps = newElasticSerializableTVList.bitMaps; |
| |
| byteArrayLengthForMemoryControl = newByteArrayLengthForMemoryControl; |
| totalByteArrayLengthLimit = (long) size * byteArrayLengthForMemoryControl; |
| } |
| } |