[fix](show) apply ORDER BY and LIMIT correctly to SHOW TABLETS (#65871) #66116
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,45 @@ | ||
| // 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. | ||
|
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| package org.apache.doris.nereids.util; | ||
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| import org.apache.doris.common.util.ListComparator; | ||
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| import java.util.ArrayList; | ||
| import java.util.List; | ||
| import java.util.Optional; | ||
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| /** | ||
| * Record Picker Util. | ||
| */ | ||
| public class RecordPickerUtils { | ||
| /** | ||
| * Qualifies the record(s) that are available to be picked in the Query / Command's result. | ||
| */ | ||
| public static List<List<Comparable>> getQualifiedRecords( | ||
| List<List<Comparable>> comparables, ListComparator<List<Comparable>> comparator, Optional<Integer> k) { | ||
| int limit = k.orElse(comparables.size()); | ||
| if (comparables.isEmpty()) { | ||
| return new ArrayList<>(); | ||
| } | ||
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| //Collections.sort(comparables, comparator); | ||
| comparables.sort(comparator); | ||
| return new ArrayList<>(comparables.subList(0, Math.min(limit, comparables.size()))); | ||
| } | ||
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|
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| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,74 @@ | ||
| // 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. | ||
|
|
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| package org.apache.doris.nereids.util; | ||
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| import org.apache.doris.common.util.ListComparator; | ||
| import org.apache.doris.common.util.OrderByPair; | ||
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| import org.junit.jupiter.api.Assertions; | ||
| import org.junit.jupiter.api.Test; | ||
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| import java.util.Arrays; | ||
| import java.util.List; | ||
| import java.util.Optional; | ||
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| class RecordPickerUtilsTest { | ||
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| @Test | ||
| void testZeroLimitReturnsNoRecords() { | ||
| List<List<Comparable>> records = Arrays.asList( | ||
| createTabletRecord(2L, 100L), | ||
| createTabletRecord(1L, 100L)); | ||
| ListComparator<List<Comparable>> comparator = new ListComparator<>( | ||
| new OrderByPair(8, true), | ||
| new OrderByPair(0, false)); | ||
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| List<List<Comparable>> actual = RecordPickerUtils.getQualifiedRecords( | ||
| records, comparator, Optional.of(0)); | ||
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| Assertions.assertTrue(actual.isEmpty()); | ||
| } | ||
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| @Test | ||
| void testMultipleOrderByColumnsWithDifferentDirections() { | ||
| List<List<Comparable>> records = Arrays.asList( | ||
| createTabletRecord(3L, 200L), | ||
| createTabletRecord(2L, 100L), | ||
| createTabletRecord(1L, 200L), | ||
| createTabletRecord(3L, 100L), | ||
| createTabletRecord(2L, 200L), | ||
| createTabletRecord(1L, 100L)); | ||
| ListComparator<List<Comparable>> comparator = new ListComparator<>( | ||
| new OrderByPair(8, true), | ||
| new OrderByPair(0, false)); | ||
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| List<List<Comparable>> actual = RecordPickerUtils.getQualifiedRecords( | ||
| records, comparator, Optional.of(5)); | ||
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| Assertions.assertEquals(Arrays.asList( | ||
| createTabletRecord(1L, 200L), | ||
| createTabletRecord(2L, 200L), | ||
| createTabletRecord(3L, 200L), | ||
| createTabletRecord(1L, 100L), | ||
| createTabletRecord(2L, 100L)), actual); | ||
| } | ||
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| private List<Comparable> createTabletRecord(long tabletId, long localDataSize) { | ||
| return Arrays.asList(tabletId, 0L, 0L, 0L, 0L, 0L, 0L, 0L, localDataSize); | ||
| } | ||
| } |
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offset and limit should be long. check overflow by
org.apache.doris.nereids.util.Utils#addOverflowsUh oh!
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@morrySnow Since it is already typecast in the original version, I preserved the same. Also,
List<List<Comparable>> tabletInfos's size always returns int.