src/java/org/apache/hadoop/mapred/DisallowedTaskTrackerException.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.mapred;

import java.io.IOException;


/**
 * This exception is thrown when a tasktracker tries to register or communicate
 * with the jobtracker when it does not appear on the list of included nodes, 
 * or has been specifically excluded.
 * 
 */
class DisallowedTaskTrackerException extends IOException {

  private static final long serialVersionUID = 1L;

  public DisallowedTaskTrackerException(TaskTrackerStatus tracker) {
    super("Tasktracker denied communication with jobtracker: " + tracker.getTrackerName());
  }
}