spark Sorter 源码
spark Sorter 代码
文件路径：/core/src/main/scala/org/apache/spark/util/collection/Sorter.scala
/*
* 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.spark.util.collection
import java.util.Comparator
/**
* A simple wrapper over the Java implementation [[TimSort]].
*
* The Java implementation is package private, and hence it cannot be called outside package
* org.apache.spark.util.collection. This is a simple wrapper of it that is available to spark.
*/
private[spark]
class Sorter[K, Buffer](private val s: SortDataFormat[K, Buffer]) {
private val timSort = new TimSort(s)
/**
* Sorts the input buffer within range [lo, hi).
*/
def sort(a: Buffer, lo: Int, hi: Int, c: Comparator[_ >: K]): Unit = {
timSort.sort(a, lo, hi, c)
}
}
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