| /** |
| * 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.mapreduce; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| |
| import org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.classification.InterfaceStability; |
| import org.apache.hadoop.io.Text; |
| import org.apache.hadoop.io.Writable; |
| |
| /** |
| * Information about TaskTracker. |
| */ |
| @InterfaceAudience.Public |
| @InterfaceStability.Evolving |
| public class TaskTrackerInfo implements Writable { |
| String name; |
| boolean isBlacklisted = false; |
| String reasonForBlacklist = ""; |
| String blacklistReport = ""; |
| |
| public TaskTrackerInfo() { |
| } |
| // construct an active tracker |
| public TaskTrackerInfo(String name) { |
| this.name = name; |
| } |
| |
| // construct blacklisted tracker |
| public TaskTrackerInfo(String name, String reasonForBlacklist, |
| String report) { |
| this.name = name; |
| this.isBlacklisted = true; |
| this.reasonForBlacklist = reasonForBlacklist; |
| this.blacklistReport = report; |
| } |
| |
| /** |
| * Gets the tasktracker's name. |
| * |
| * @return tracker's name. |
| */ |
| public String getTaskTrackerName() { |
| return name; |
| } |
| |
| /** |
| * Whether tracker is blacklisted |
| * @return true if tracker is blacklisted |
| * false otherwise |
| */ |
| public boolean isBlacklisted() { |
| return isBlacklisted; |
| } |
| |
| /** |
| * Gets the reason for which the tasktracker was blacklisted. |
| * |
| * @return reason which tracker was blacklisted |
| */ |
| public String getReasonForBlacklist() { |
| return reasonForBlacklist; |
| } |
| |
| /** |
| * Gets a descriptive report about why the tasktracker was blacklisted. |
| * |
| * @return report describing why the tasktracker was blacklisted. |
| */ |
| public String getBlacklistReport() { |
| return blacklistReport; |
| } |
| |
| @Override |
| public void readFields(DataInput in) throws IOException { |
| name = Text.readString(in); |
| isBlacklisted = in.readBoolean(); |
| reasonForBlacklist = Text.readString(in); |
| blacklistReport = Text.readString(in); |
| } |
| |
| @Override |
| public void write(DataOutput out) throws IOException { |
| Text.writeString(out, name); |
| out.writeBoolean(isBlacklisted); |
| Text.writeString(out, reasonForBlacklist); |
| Text.writeString(out, blacklistReport); |
| } |
| |
| } |