hadoop InvalidInputException 源码
haddop InvalidInputException 代码
文件路径：/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/InvalidInputException.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;
import java.util.List;
import java.util.Iterator;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
/**
* This class wraps a list of problems with the input, so that the user
* can get a list of problems together instead of finding and fixing them one
* by one.
*/
@InterfaceAudience.Public
@InterfaceStability.Stable
public class InvalidInputException extends IOException {
private static final long serialVersionUID = 1L;
private List<IOException> problems;
/**
* Create the exception with the given list.
* The first element of the list is used as the init cause value.
* @param probs the list of problems to report. this list is not copied.
*/
public InvalidInputException(List<IOException> probs) {
problems = probs;
if (!probs.isEmpty()) {
initCause(probs.get(0));
}
}
/**
* Get the complete list of the problems reported.
* @return the list of problems, which must not be modified
*/
public List<IOException> getProblems() {
return problems;
}
/**
* Get a summary message of the problems found.
* @return the concatenated messages from all of the problems.
*/
public String getMessage() {
StringBuffer result = new StringBuffer();
Iterator<IOException> itr = problems.iterator();
while(itr.hasNext()) {
result.append(itr.next().getMessage());
if (itr.hasNext()) {
result.append("\n");
}
}
return result.toString();
}
}
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