| /* |
| * 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. |
| */ |
| |
| /** |
| * A mechanism for selectively retrying methods that throw exceptions under |
| * certain circumstances. |
| * Typical usage is |
| * UnreliableImplementation unreliableImpl = new UnreliableImplementation(); |
| * UnreliableInterface unreliable = (UnreliableInterface) |
| * RetryProxy.create(UnreliableInterface.class, unreliableImpl, |
| * RetryPolicies.retryUpToMaximumCountWithFixedSleep(4, 10, |
| * TimeUnit.SECONDS)); |
| * unreliable.call(); |
| * |
| * This will retry any method called on <code>unreliable</code> four times - |
| * in this case the <code>call()</code> method - sleeping 10 seconds between |
| * each retry. There are a number of |
| * {@link org.apache.hadoop.io.retry.RetryPolicies retry policies} |
| * available, or you can implement a custom one by implementing |
| * {@link org.apache.hadoop.io.retry.RetryPolicy}. |
| * It is also possible to specify retry policies on a |
| * {@link org.apache.hadoop.io.retry.RetryProxy#create(Class, Object, Map) |
| * per-method basis}. |
| */ |
| @InterfaceAudience.LimitedPrivate({"HBase", "HDFS", "MapReduce"}) |
| @InterfaceStability.Evolving |
| package org.apache.hadoop.io.retry; |
| import org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.classification.InterfaceStability; |
