| /** |
| * 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.blacklist; |
| |
| import org.apache.hadoop.classification.InterfaceAudience.Private; |
| import org.apache.hadoop.yarn.api.records.ResourceBlacklistRequest; |
| |
| /** |
| * Tracks blacklists based on failures reported on nodes. |
| */ |
| @Private |
| public interface BlacklistManager { |
| |
| /** |
| * Report failure of a container on node. |
| * @param node that has a container failure |
| */ |
| void addNode(String node); |
| |
| /** |
| * Get {@link ResourceBlacklistRequest} that indicate which nodes should be |
| * added or to removed from the blacklist. |
| * @return {@link ResourceBlacklistRequest} |
| */ |
| ResourceBlacklistRequest getBlacklistUpdates(); |
| |
| /** |
| * Refresh the number of NodeManagers available for scheduling. |
| * @param nodeHostCount is the number of node hosts. |
| */ |
| void refreshNodeHostCount(int nodeHostCount); |
| } |