org.apache.hadoop.hdfs.server.diskbalancer.DiskBalancerException Maven / Gradle / Ivy
/**
* 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.hdfs.server.diskbalancer;
import java.io.IOException;
/**
* Disk Balancer Exceptions.
*/
public class DiskBalancerException extends IOException {
/**
* Results returned by the RPC layer of DiskBalancer.
*/
public enum Result {
DISK_BALANCER_NOT_ENABLED,
INVALID_PLAN_VERSION,
INVALID_PLAN,
INVALID_PLAN_HASH,
OLD_PLAN_SUBMITTED,
DATANODE_ID_MISMATCH,
MALFORMED_PLAN,
PLAN_ALREADY_IN_PROGRESS,
INVALID_VOLUME,
INVALID_MOVE,
INTERNAL_ERROR,
NO_SUCH_PLAN,
UNKNOWN_KEY,
INVALID_NODE,
DATANODE_STATUS_NOT_REGULAR,
INVALID_HOST_FILE_PATH,
}
private final Result result;
/**
* Constructs an {@code IOException} with the specified detail message.
*
* @param message The detail message (which is saved for later retrieval by
* the {@link #getMessage()} method)
*/
public DiskBalancerException(String message, Result result) {
super(message);
this.result = result;
}
/**
* Constructs an {@code IOException} with the specified detail message and
* cause.
* Note that the detail message associated with {@code cause} is
* not
* automatically incorporated into this exception's detail message.
*
* @param message The detail message (which is saved for later retrieval by
* the
* {@link #getMessage()} method)
* @param cause The cause (which is saved for later retrieval by the {@link
* #getCause()} method). (A null value is permitted, and
* indicates that the cause is nonexistent or unknown.)
*/
public DiskBalancerException(String message, Throwable cause, Result result) {
super(message, cause);
this.result = result;
}
/**
* Constructs an {@code IOException} with the specified cause and a detail
* message of {@code (cause==null ? null : cause.toString())} (which typically
* contains the class and detail message of {@code cause}). This
* constructor is useful for IO exceptions that are little more than
* wrappers for other throwables.
*
* @param cause The cause (which is saved for later retrieval by the {@link
* #getCause()} method). (A null value is permitted, and
* indicates
* that the cause is nonexistent or unknown.)
*/
public DiskBalancerException(Throwable cause, Result result) {
super(cause);
this.result = result;
}
/**
* Returns the result.
* @return int
*/
public Result getResult() {
return result;
}
}