1 /**
2 *
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements. See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance
9 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 */
19
20 package org.apache.hadoop.hbase.exceptions;
21
22 import java.net.ConnectException;
23
24 import org.apache.hadoop.hbase.classification.InterfaceAudience;
25 import org.apache.hadoop.hbase.classification.InterfaceStability;
26 import org.apache.hadoop.hbase.ServerName;
27
28 /**
29 * Thrown when the client believes that we are trying to communicate to has
30 * been repeatedly unresponsive for a while.
31 *
32 * On receiving such an exception. The HConnectionManager will skip all
33 * retries and fast fail the operation.
34 */
35 @InterfaceAudience.Public
36 @InterfaceStability.Evolving
37 public class PreemptiveFastFailException extends ConnectException {
38 private static final long serialVersionUID = 7129103682617007177L;
39 private long failureCount, timeOfFirstFailureMilliSec, timeOfLatestAttemptMilliSec;
40
41 /**
42 * @param count
43 * @param timeOfFirstFailureMilliSec
44 * @param timeOfLatestAttemptMilliSec
45 * @param serverName
46 */
47 public PreemptiveFastFailException(long count, long timeOfFirstFailureMilliSec,
48 long timeOfLatestAttemptMilliSec, ServerName serverName) {
49 super("Exception happened " + count + " times. to" + serverName);
50 this.failureCount = count;
51 this.timeOfFirstFailureMilliSec = timeOfFirstFailureMilliSec;
52 this.timeOfLatestAttemptMilliSec = timeOfLatestAttemptMilliSec;
53 }
54
55 public long getFirstFailureAt() {
56 return timeOfFirstFailureMilliSec;
57 }
58
59 public long getLastAttemptAt() {
60 return timeOfLatestAttemptMilliSec;
61 }
62
63 public long getFailureCount() {
64 return failureCount;
65 }
66
67 public boolean wasOperationAttemptedByServer() {
68 return false;
69 }
70 }