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[CARBONDATA-2018][DataLoad] Optimization in reading/writing for sort …
…temp row Pick up the no-sort fields in the row and pack them as bytes array and skip parsing them during merge sort to reduce CPU consumption This closes apache#1792
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117 changes: 117 additions & 0 deletions
117
...g/src/main/java/org/apache/carbondata/processing/loading/row/IntermediateSortTempRow.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.carbondata.processing.loading.row; | ||
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| import java.nio.ByteBuffer; | ||
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| import org.apache.carbondata.core.metadata.datatype.DataType; | ||
| import org.apache.carbondata.core.metadata.datatype.DataTypes; | ||
| import org.apache.carbondata.core.util.DataTypeUtil; | ||
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| /** | ||
| * During sort procedure, each row will be written to sort temp file in this logic format. | ||
| * an intermediate sort temp row consists 3 parts: | ||
| * dictSort, noDictSort, noSortDimsAndMeasures(dictNoSort, noDictNoSort, measure) | ||
| */ | ||
| public class IntermediateSortTempRow { | ||
| private int[] dictSortDims; | ||
| private byte[][] noDictSortDims; | ||
| private byte[] noSortDimsAndMeasures; | ||
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| public IntermediateSortTempRow(int[] dictSortDims, byte[][] noDictSortDims, | ||
| byte[] noSortDimsAndMeasures) { | ||
| this.dictSortDims = dictSortDims; | ||
| this.noDictSortDims = noDictSortDims; | ||
| this.noSortDimsAndMeasures = noSortDimsAndMeasures; | ||
| } | ||
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| public int[] getDictSortDims() { | ||
| return dictSortDims; | ||
| } | ||
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| public byte[][] getNoDictSortDims() { | ||
| return noDictSortDims; | ||
| } | ||
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| public byte[] getNoSortDimsAndMeasures() { | ||
| return noSortDimsAndMeasures; | ||
| } | ||
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| /** | ||
| * deserialize from bytes array to get the no sort fields | ||
| * @param outDictNoSort stores the dict & no-sort fields | ||
| * @param outNoDictNoSort stores the no-dict & no-sort fields, including complex | ||
| * @param outMeasures stores the measure fields | ||
| * @param dataTypes data type for the measure | ||
| */ | ||
| public void unpackNoSortFromBytes(int[] outDictNoSort, byte[][] outNoDictNoSort, | ||
| Object[] outMeasures, DataType[] dataTypes) { | ||
| ByteBuffer rowBuffer = ByteBuffer.wrap(noSortDimsAndMeasures); | ||
| // read dict_no_sort | ||
| int dictNoSortCnt = outDictNoSort.length; | ||
| for (int i = 0; i < dictNoSortCnt; i++) { | ||
| outDictNoSort[i] = rowBuffer.getInt(); | ||
| } | ||
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| // read no_dict_no_sort (including complex) | ||
| int noDictNoSortCnt = outNoDictNoSort.length; | ||
| for (int i = 0; i < noDictNoSortCnt; i++) { | ||
| short len = rowBuffer.getShort(); | ||
| byte[] bytes = new byte[len]; | ||
| rowBuffer.get(bytes); | ||
| outNoDictNoSort[i] = bytes; | ||
| } | ||
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| // read measure | ||
| int measureCnt = outMeasures.length; | ||
| DataType tmpDataType; | ||
| Object tmpContent; | ||
| for (short idx = 0 ; idx < measureCnt; idx++) { | ||
| if ((byte) 0 == rowBuffer.get()) { | ||
| outMeasures[idx] = null; | ||
| continue; | ||
| } | ||
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| tmpDataType = dataTypes[idx]; | ||
| if (DataTypes.BOOLEAN == tmpDataType) { | ||
| if ((byte) 1 == rowBuffer.get()) { | ||
| tmpContent = true; | ||
| } else { | ||
| tmpContent = false; | ||
| } | ||
| } else if (DataTypes.SHORT == tmpDataType) { | ||
| tmpContent = rowBuffer.getShort(); | ||
| } else if (DataTypes.INT == tmpDataType) { | ||
| tmpContent = rowBuffer.getInt(); | ||
| } else if (DataTypes.LONG == tmpDataType) { | ||
| tmpContent = rowBuffer.getLong(); | ||
| } else if (DataTypes.DOUBLE == tmpDataType) { | ||
| tmpContent = rowBuffer.getDouble(); | ||
| } else if (DataTypes.isDecimal(tmpDataType)) { | ||
| short len = rowBuffer.getShort(); | ||
| byte[] decimalBytes = new byte[len]; | ||
| rowBuffer.get(decimalBytes); | ||
| tmpContent = DataTypeUtil.byteToBigDecimal(decimalBytes); | ||
| } else { | ||
| throw new IllegalArgumentException("Unsupported data type: " + tmpDataType); | ||
| } | ||
| outMeasures[idx] = tmpContent; | ||
| } | ||
| } | ||
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| } |
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