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[apache#1749] feat(remote merge): Introduce new reader for reading so…
…rted data. (apache#2034) ### What changes were proposed in this pull request? Introduce new reader for reading sorted data. Since apache#1748 already provides methods for merging blocks, we need to provide a method for reading merged block. The record obtained from the getSortedShuffleData method is sorted using the comparatorClassName which is passed by registerShuffle. ### Why are the changes needed? Fix: apache#1749 ### Does this PR introduce _any_ user-facing change? Yes, add doc in a separated issue ### How was this patch tested? unit test, integration test, test real job in cluster.
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client/src/main/java/org/apache/uniffle/client/record/Record.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. | ||
| */ | ||
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| package org.apache.uniffle.client.record; | ||
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| import com.google.common.base.Objects; | ||
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| public class Record<K, V> { | ||
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| private K key; | ||
| private V value; | ||
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| private Record(K key, V value) { | ||
| this.key = key; | ||
| this.value = value; | ||
| } | ||
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| public static <K, V> Record create(K key, V value) { | ||
| return new Record<K, V>(key, value); | ||
| } | ||
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| public K getKey() { | ||
| return key; | ||
| } | ||
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| public V getValue() { | ||
| return value; | ||
| } | ||
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| public void setValue(V value) { | ||
| this.value = value; | ||
| } | ||
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| @Override | ||
| public String toString() { | ||
| return "Record{" + "key=" + key + ", value=" + value + '}'; | ||
| } | ||
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| @Override | ||
| public boolean equals(Object o) { | ||
| if (this == o) { | ||
| return true; | ||
| } | ||
| if (o == null || getClass() != o.getClass()) { | ||
| return false; | ||
| } | ||
| Record<?, ?> record = (Record<?, ?>) o; | ||
| return Objects.equal(key, record.key) && Objects.equal(value, record.value); | ||
| } | ||
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| @Override | ||
| public int hashCode() { | ||
| return Objects.hashCode(key, value); | ||
| } | ||
| } |
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