hadoop FederationActionRetry 源码
haddop FederationActionRetry 代码
文件路径：/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-common/src/main/java/org/apache/hadoop/yarn/server/federation/retry/FederationActionRetry.java
/**
* 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.yarn.server.federation.retry;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public interface FederationActionRetry<T> {
Logger LOG = LoggerFactory.getLogger(FederationActionRetry.class);
T run() throws Exception;
default T runWithRetries(int retryCount, long retrySleepTime) throws Exception {
int retry = 0;
while (true) {
try {
return run();
} catch (Exception e) {
LOG.info("Exception while executing an Federation operation.", e);
if (++retry > retryCount) {
LOG.info("Maxed out Federation retries. Giving up!");
throw e;
}
LOG.info("Retrying operation on Federation. Retry no. {}", retry);
Thread.sleep(retrySleepTime);
}
}
}
}
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