hadoop CandidateNodeSet 源码

  • 2022-10-20
  • 浏览 (226)

haddop CandidateNodeSet 代码

文件路径:/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/placement/CandidateNodeSet.java

/**
 * 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.hadoop.yarn.server.resourcemanager.scheduler.placement;

import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.yarn.api.records.NodeId;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerNode;

import java.util.Map;

/**
 * A group of nodes which can be allocated by scheduler.
 *
 * It will have following part:
 *
 * 1) A map of nodes which can be schedule-able.
 * 2) Version of the node set, version should be updated if any node added or
 *    removed from the node set. This will be used by
 *    {@link AppPlacementAllocator} or other class to check if it's required to
 *    invalidate local caches, etc.
 * 3) Node partition of the candidate set.
 */
@InterfaceAudience.Private
@InterfaceStability.Unstable
public interface CandidateNodeSet<N extends SchedulerNode> {
  /**
   * Get all nodes for this CandidateNodeSet
   * @return all nodes for this CandidateNodeSet
   */
  Map<NodeId, N> getAllNodes();

  /**
   * Version of the CandidateNodeSet, can help {@link AppPlacementAllocator} to
   * decide if update is required
   * @return version
   */
  long getVersion();

  /**
   * Node partition of the node set.
   * @return node partition
   */
  String getPartition();
}

相关信息

hadoop 源码目录

相关文章

hadoop AppPlacementAllocator 源码

hadoop CandidateNodeSetUtils 源码

hadoop LocalityAppPlacementAllocator 源码

hadoop MultiNodeLookupPolicy 源码

hadoop MultiNodePolicySpec 源码

hadoop MultiNodeSorter 源码

hadoop MultiNodeSortingManager 源码

hadoop PendingAskUpdateResult 源码

hadoop ResourceUsageMultiNodeLookupPolicy 源码

hadoop SimpleCandidateNodeSet 源码

0  赞