| /* |
| * Copyright 2009-2013 by The Regents of the University of California |
| * 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 from |
| * |
| * 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 edu.uci.ics.pregelix.core.util; |
| |
| import java.io.IOException; |
| import java.util.Set; |
| |
| import edu.uci.ics.hyracks.api.exceptions.HyracksDataException; |
| |
| /** |
| * The util to analysis exceptions |
| * |
| * @author yingyib |
| */ |
| public class ExceptionUtilities { |
| |
| /** |
| * Check whether a exception is recoverable or not |
| * |
| * @param exception |
| * @return true or false |
| */ |
| public static boolean recoverable(Exception exception, Set<String> blackListNodes) { |
| String message = exception.getMessage(); |
| |
| /** |
| * Don't know to recover or not, return true |
| */ |
| if (message == null) { |
| return true; |
| } |
| |
| /*** |
| * check interrupted exception |
| */ |
| if (exception instanceof InterruptedException || (message.contains("Node") && message.contains("not live")) |
| || message.contains("Failure occurred on input")) { |
| return true; |
| } |
| Throwable cause = exception; |
| while ((cause = cause.getCause()) != null) { |
| if (cause instanceof InterruptedException) { |
| return true; |
| } |
| } |
| |
| /*** |
| * check io exception |
| */ |
| cause = exception; |
| String blackListNode = null; |
| if (cause instanceof HyracksDataException) { |
| blackListNode = ((HyracksDataException) cause).getNodeId(); |
| } |
| while ((cause = cause.getCause()) != null) { |
| if (cause instanceof IOException) { |
| if (containsIOManager(cause)) { |
| if (blackListNode != null) { |
| blackListNodes.add(blackListNode); |
| } |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Check if the exception traces contains the IOManager, which means there are disk failures |
| * |
| * @param cause |
| * @return true if IOManager is in the trace; false otherwise. |
| */ |
| private static boolean containsIOManager(Throwable cause) { |
| StackTraceElement[] traces = cause.getStackTrace(); |
| for (StackTraceElement e : traces) { |
| if (e.getClassName().endsWith("IOManager")) { |
| return true; |
| } |
| } |
| return false; |
| } |
| } |