-
Notifications
You must be signed in to change notification settings - Fork 1.3k
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
support SKEW_POP and KURTOSIS_POP aggregates
- Loading branch information
Showing
8 changed files
with
573 additions
and
2 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
168 changes: 168 additions & 0 deletions
168
...ava/org/apache/pinot/core/query/aggregation/function/FourthMomentAggregationFunction.java
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,168 @@ | ||
| /** | ||
| * 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.pinot.core.query.aggregation.function; | ||
|
|
||
| import java.util.Map; | ||
| import org.apache.pinot.common.request.context.ExpressionContext; | ||
| import org.apache.pinot.common.utils.DataSchema; | ||
| import org.apache.pinot.core.common.BlockValSet; | ||
| import org.apache.pinot.core.query.aggregation.AggregationResultHolder; | ||
| import org.apache.pinot.core.query.aggregation.ObjectAggregationResultHolder; | ||
| import org.apache.pinot.core.query.aggregation.groupby.GroupByResultHolder; | ||
| import org.apache.pinot.core.query.aggregation.groupby.ObjectGroupByResultHolder; | ||
| import org.apache.pinot.core.query.aggregation.utils.StatisticalAggregationFunctionUtils; | ||
| import org.apache.pinot.segment.local.customobject.PinotFourthMoment; | ||
| import org.apache.pinot.segment.spi.AggregationFunctionType; | ||
|
|
||
|
|
||
| public class FourthMomentAggregationFunction extends BaseSingleInputAggregationFunction<PinotFourthMoment, Double> { | ||
|
|
||
| private final Type _type; | ||
|
|
||
| enum Type { | ||
| KURTOSIS, | ||
| SKEW | ||
| } | ||
|
|
||
| public FourthMomentAggregationFunction(ExpressionContext expression, Type type) { | ||
| super(expression); | ||
| _type = type; | ||
| } | ||
|
|
||
| @Override | ||
| public AggregationFunctionType getType() { | ||
| switch (_type) { | ||
| case KURTOSIS: | ||
| return AggregationFunctionType.KURTOSISPOP; | ||
| case SKEW: | ||
| return AggregationFunctionType.SKEWPOP; | ||
| default: | ||
| throw new IllegalArgumentException("Unexpected type " + _type); | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public AggregationResultHolder createAggregationResultHolder() { | ||
| return new ObjectAggregationResultHolder(); | ||
| } | ||
|
|
||
| @Override | ||
| public GroupByResultHolder createGroupByResultHolder(int initialCapacity, int maxCapacity) { | ||
| return new ObjectGroupByResultHolder(initialCapacity, maxCapacity); | ||
| } | ||
|
|
||
| @Override | ||
| public void aggregate(int length, AggregationResultHolder aggregationResultHolder, | ||
| Map<ExpressionContext, BlockValSet> blockValSetMap) { | ||
| double[] values = StatisticalAggregationFunctionUtils.getValSet(blockValSetMap, _expression); | ||
|
|
||
| PinotFourthMoment m4 = aggregationResultHolder.getResult(); | ||
| if (m4 == null) { | ||
| m4 = new PinotFourthMoment(); | ||
| aggregationResultHolder.setValue(m4); | ||
| } | ||
|
|
||
| for (int i = 0; i < length; i++) { | ||
| m4.increment(values[i]); | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public void aggregateGroupBySV(int length, int[] groupKeyArray, GroupByResultHolder groupByResultHolder, | ||
| Map<ExpressionContext, BlockValSet> blockValSetMap) { | ||
| double[] values = StatisticalAggregationFunctionUtils.getValSet(blockValSetMap, _expression); | ||
| for (int i = 0; i < length; i++) { | ||
| PinotFourthMoment m4 = groupByResultHolder.getResult(groupKeyArray[i]); | ||
| if (m4 == null) { | ||
| m4 = new PinotFourthMoment(); | ||
| groupByResultHolder.setValueForKey(groupKeyArray[i], m4); | ||
| } | ||
| m4.increment(values[i]); | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public void aggregateGroupByMV(int length, int[][] groupKeysArray, GroupByResultHolder groupByResultHolder, | ||
| Map<ExpressionContext, BlockValSet> blockValSetMap) { | ||
| double[] values = StatisticalAggregationFunctionUtils.getValSet(blockValSetMap, _expression); | ||
| for (int i = 0; i < length; i++) { | ||
| for (int groupKey : groupKeysArray[i]) { | ||
| PinotFourthMoment m4 = groupByResultHolder.getResult(groupKey); | ||
| if (m4 == null) { | ||
| m4 = new PinotFourthMoment(); | ||
| groupByResultHolder.setValueForKey(groupKey, m4); | ||
| } | ||
| m4.increment(values[i]); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public PinotFourthMoment extractAggregationResult(AggregationResultHolder aggregationResultHolder) { | ||
| PinotFourthMoment m4 = aggregationResultHolder.getResult(); | ||
| if (m4 == null) { | ||
| return new PinotFourthMoment(); | ||
| } else { | ||
| return m4; | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public PinotFourthMoment extractGroupByResult(GroupByResultHolder groupByResultHolder, int groupKey) { | ||
| PinotFourthMoment m4 = groupByResultHolder.getResult(groupKey); | ||
| if (m4 == null) { | ||
| return new PinotFourthMoment(); | ||
| } else { | ||
| return m4; | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public PinotFourthMoment merge(PinotFourthMoment intermediateResult1, PinotFourthMoment intermediateResult2) { | ||
| intermediateResult1.combine(intermediateResult2); | ||
| return intermediateResult1; | ||
| } | ||
|
|
||
| @Override | ||
| public DataSchema.ColumnDataType getIntermediateResultColumnType() { | ||
| return DataSchema.ColumnDataType.OBJECT; | ||
| } | ||
|
|
||
| @Override | ||
| public DataSchema.ColumnDataType getFinalResultColumnType() { | ||
| return DataSchema.ColumnDataType.DOUBLE; | ||
| } | ||
|
|
||
| @Override | ||
| public Double extractFinalResult(PinotFourthMoment m4) { | ||
| if (m4 == null) { | ||
| return null; | ||
| } | ||
|
|
||
| switch (_type) { | ||
| case KURTOSIS: | ||
| return m4.kurtosis(); | ||
| case SKEW: | ||
| return m4.skew(); | ||
| default: | ||
| throw new IllegalStateException("Unexpected value: " + _type); | ||
| } | ||
| } | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.