/* * Copyright 2010 The Apache Software Foundation * * 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.hbase.client; import org.apache.hadoop.hbase.DoNotRetryIOException; import org.apache.hadoop.hbase.HServerAddress; import org.apache.hadoop.hbase.regionserver.NoSuchColumnFamilyException; import org.apache.hadoop.hbase.util.Addressing; import java.util.Collection; import java.util.HashMap; import java.util.HashSet; import java.util.List; import java.util.Map; import java.util.Set; /** * This subclass of {@link org.apache.hadoop.hbase.client.RetriesExhaustedException} * is thrown when we have more information about which rows were causing which * exceptions on what servers. You can call {@link #mayHaveClusterIssues()} * and if the result is false, you have input error problems, otherwise you * may have cluster issues. You can iterate over the causes, rows and last * known server addresses via {@link #getNumExceptions()} and * {@link #getCause(int)}, {@link #getRow(int)} and {@link #getAddress(int)}. */ @SuppressWarnings("serial") public class RetriesExhaustedWithDetailsException extends RetriesExhaustedException { List<Throwable> exceptions; List<Row> actions; List<String> hostnameAndPort; public RetriesExhaustedWithDetailsException(List<Throwable> exceptions, List<Row> actions, List<String> hostnameAndPort) { super("Failed " + exceptions.size() + " action" + pluralize(exceptions) + ": " + getDesc(exceptions, actions, hostnameAndPort)); this.exceptions = exceptions; this.actions = actions; this.hostnameAndPort = hostnameAndPort; } public List<Throwable> getCauses() { return exceptions; } public int getNumExceptions() { return exceptions.size(); } public Throwable getCause(int i) { return exceptions.get(i); } public Row getRow(int i) { return actions.get(i); } public HServerAddress getAddress(int i) { return new HServerAddress(Addressing.createInetSocketAddressFromHostAndPortStr(getHostnamePort(i))); } public String getHostnamePort(final int i) { return this.hostnameAndPort.get(i); } public boolean mayHaveClusterIssues() { boolean res = false; // If all of the exceptions are DNRIOE not exception for (Throwable t : exceptions) { if ( !(t instanceof DoNotRetryIOException)) { res = true; } } return res; } public static String pluralize(Collection<?> c) { return pluralize(c.size()); } public static String pluralize(int c) { return c > 1 ? "s" : ""; } public static String getDesc(List<Throwable> exceptions, List<Row> actions, List<String> hostnamePort) { String s = getDesc(classifyExs(exceptions)); s += "servers with issues: "; Set<String> uniqAddr = new HashSet<String>(); uniqAddr.addAll(hostnamePort); for(String addr : uniqAddr) { s += addr + ", "; } return s; } public static Map<String, Integer> classifyExs(List<Throwable> ths) { Map<String, Integer> cls = new HashMap<String, Integer>(); for (Throwable t : ths) { if (t == null) continue; String name = ""; if (t instanceof NoSuchColumnFamilyException) { name = t.getMessage(); } else { name = t.getClass().getSimpleName(); } Integer i = cls.get(name); if (i == null) { i = 0; } i += 1; cls.put(name, i); } return cls; } public static String getDesc(Map<String,Integer> classificaton) { String s = ""; for (Map.Entry<String, Integer> e : classificaton.entrySet()) { s += e.getKey() + ": " + e.getValue() + " time" + pluralize(e.getValue()) + ", "; } return s; } }