/**
* 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.api.records;
import org.apache.hadoop.classification.InterfaceAudience.Public;
import org.apache.hadoop.classification.InterfaceStability.Unstable;
/**
* <p>State of a <code>Node</code>.</p>
*/
@Public
@Unstable
public enum NodeState {
/** New node */
NEW,
/** Running node */
RUNNING,
/** Node is unhealthy */
UNHEALTHY,
/** Node is out of service */
DECOMMISSIONED,
/** Node has not sent a heartbeat for some configured time threshold*/
LOST,
/** Node has rebooted */
REBOOTED;
public boolean isUnusable() {
return (this == UNHEALTHY || this == DECOMMISSIONED || this == LOST);
}
}