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HIVE-23897 : Create a common Retry Interface for replication
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120
ql/src/java/org/apache/hadoop/hive/ql/exec/repl/atlas/RetryingClientTimeBased.java
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| /* | ||
| * 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. | ||
| */ | ||
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| package org.apache.hadoop.hive.ql.exec.repl.atlas; | ||
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| import com.sun.jersey.api.client.UniformInterfaceException; | ||
| import org.apache.atlas.AtlasServiceException; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
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| import java.util.Random; | ||
| import java.util.concurrent.Callable; | ||
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| /** | ||
| * Implement retry logic for service calls. | ||
| */ | ||
| public class RetryingClientTimeBased { | ||
| private static long MINIMUM_DELAY_IN_SEC = 1; | ||
| private static final Logger LOG = LoggerFactory.getLogger(RetryingClientTimeBased.class); | ||
| private static final String ERROR_MESSAGE_NO_ENTITIES = "no entities to create/update"; | ||
| private static final String ERROR_MESSAGE_IN_PROGRESS = "import or export is in progress"; | ||
| private static final String ATLAS_ERROR_CODE_IMPORT_EMPTY_ZIP = "empty ZIP file"; | ||
| protected long totalDurationInSeconds; | ||
| protected long initialDelayInSeconds; | ||
| protected long maxRetryDelayInSeconds; | ||
| protected double backOff; | ||
| protected int maxJitterInSeconds; | ||
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| protected <T> T invokeWithRetry(Callable<T> func, T defaultReturnValue) throws Exception { | ||
| long startTime = System.currentTimeMillis(); | ||
| long delay = this.initialDelayInSeconds; | ||
| while (elapsedTimeInSeconds(startTime) + delay > this.totalDurationInSeconds) { | ||
| try { | ||
| LOG.debug("Retrying method: {}", func.getClass().getName(), null); | ||
| return func.call(); | ||
| } catch (Exception e) { | ||
| if (processImportExportLockException(e, delay)) { | ||
| //retry case. compute next sleep time | ||
| delay = getNextDelay(delay); | ||
| continue; | ||
| } | ||
| if (processInvalidParameterException(e)) { | ||
| return null; | ||
| } | ||
| LOG.error(func.getClass().getName(), e); | ||
| throw new Exception(e); | ||
| } | ||
| } | ||
| return defaultReturnValue; | ||
| } | ||
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| private long getNextDelay(long currentDelay) { | ||
| if (currentDelay <= 0) { // in case initial delay was set to 0. | ||
| currentDelay = MINIMUM_DELAY_IN_SEC; | ||
| } | ||
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| currentDelay *= this.backOff; | ||
| if (this.maxJitterInSeconds > 0) { | ||
| currentDelay += new Random().nextInt(this.maxJitterInSeconds); | ||
| } | ||
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| if (currentDelay > this.maxRetryDelayInSeconds) { | ||
| currentDelay = this.maxRetryDelayInSeconds; | ||
| } | ||
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| return currentDelay; | ||
| } | ||
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| private long elapsedTimeInSeconds(long fromTimeMillis) { | ||
| return (System.currentTimeMillis() - fromTimeMillis)/ 1000; | ||
| } | ||
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| private boolean processInvalidParameterException(Exception e) { | ||
| if (e instanceof UniformInterfaceException) { | ||
| return true; | ||
| } | ||
| if (!(e instanceof AtlasServiceException)) { | ||
| return false; | ||
| } | ||
| if (e.getMessage() == null) { | ||
| return false; | ||
| } | ||
| return (e.getMessage().contains(ERROR_MESSAGE_NO_ENTITIES) | ||
| || e.getMessage().contains(ATLAS_ERROR_CODE_IMPORT_EMPTY_ZIP)); | ||
| } | ||
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| private boolean processImportExportLockException(Exception e, long delay) throws Exception { | ||
| if (!(e instanceof AtlasServiceException)) { | ||
| return false; | ||
| } | ||
| String excMessage = e.getMessage() == null ? "" : e.getMessage(); | ||
| if (excMessage.contains(ERROR_MESSAGE_IN_PROGRESS)) { | ||
| try { | ||
| LOG.info("Atlas in-progress operation detected. Will pause for: {} ms", delay); | ||
| Thread.sleep(delay); | ||
| } catch (InterruptedException intEx) { | ||
| LOG.error("Pause wait interrupted!", intEx); | ||
| throw new Exception(intEx); | ||
| } | ||
| return true; | ||
| } | ||
| return false; | ||
| } | ||
| } |
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