| /** |
| * Copyright 2010 The Apache Software Foundation |
| * |
| * Licensed 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.hbase.client; |
| |
| import org.apache.hadoop.hbase.util.Bytes; |
| |
| import java.io.IOException; |
| import java.util.List; |
| |
| /** |
| * Exception thrown by HTable methods when an attempt to do something (like |
| * commit changes) fails after a bunch of retries. |
| */ |
| public class RetriesExhaustedException extends IOException { |
| private static final long serialVersionUID = 1876775844L; |
| |
| public RetriesExhaustedException(final String msg) { |
| super(msg); |
| } |
| |
| public RetriesExhaustedException(final String msg, final IOException e) { |
| super(msg, e); |
| } |
| |
| /** |
| * Create a new RetriesExhaustedException from the list of prior failures. |
| * @param serverName name of HRegionServer |
| * @param regionName name of region |
| * @param row The row we were pursuing when we ran out of retries |
| * @param numTries The number of tries we made |
| * @param exceptions List of exceptions that failed before giving up |
| */ |
| public RetriesExhaustedException(String serverName, final byte [] regionName, |
| final byte [] row, int numTries, List<Throwable> exceptions) { |
| super(getMessage(serverName, regionName, row, numTries, exceptions)); |
| } |
| |
| private static String getMessage(String serverName, final byte [] regionName, |
| final byte [] row, |
| int numTries, List<Throwable> exceptions) { |
| StringBuilder buffer = new StringBuilder("Trying to contact region server "); |
| buffer.append(serverName); |
| buffer.append(" for region "); |
| buffer.append(regionName == null? "": Bytes.toStringBinary(regionName)); |
| buffer.append(", row '"); |
| buffer.append(row == null? "": Bytes.toStringBinary(row)); |
| buffer.append("', but failed after "); |
| buffer.append(numTries + 1); |
| buffer.append(" attempts.\nExceptions:\n"); |
| for (Throwable t : exceptions) { |
| buffer.append(t.toString()); |
| buffer.append("\n"); |
| } |
| return buffer.toString(); |
| } |
| } |