| /* |
| * 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.fs.s3a.s3guard; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Random; |
| import java.util.concurrent.Callable; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.Future; |
| import java.util.concurrent.ThreadFactory; |
| import java.util.concurrent.ThreadPoolExecutor; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| import com.amazonaws.services.dynamodbv2.document.DynamoDB; |
| import com.amazonaws.services.dynamodbv2.document.Table; |
| import com.amazonaws.services.dynamodbv2.model.ResourceNotFoundException; |
| import org.junit.Assume; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.rules.Timeout; |
| |
| import org.apache.commons.lang3.StringUtils; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.contract.ContractTestUtils; |
| import org.apache.hadoop.fs.s3a.AbstractS3ATestBase; |
| import org.apache.hadoop.fs.s3a.Constants; |
| |
| import static org.apache.hadoop.fs.s3a.Constants.S3GUARD_DDB_REGION_KEY; |
| |
| /** |
| * Tests concurrent operations on S3Guard. |
| */ |
| public class ITestS3GuardConcurrentOps extends AbstractS3ATestBase { |
| |
| @Rule |
| public final Timeout timeout = new Timeout(5 * 60 * 1000); |
| |
| private void failIfTableExists(DynamoDB db, String tableName) { |
| boolean tableExists = true; |
| try { |
| Table table = db.getTable(tableName); |
| table.describe(); |
| } catch (ResourceNotFoundException e) { |
| tableExists = false; |
| } |
| if (tableExists) { |
| fail("Table already exists: " + tableName); |
| } |
| } |
| |
| private void deleteTable(DynamoDB db, String tableName) throws |
| InterruptedException { |
| try { |
| Table table = db.getTable(tableName); |
| table.waitForActive(); |
| table.delete(); |
| table.waitForDelete(); |
| } catch (ResourceNotFoundException e) { |
| LOG.warn("Failed to delete {}, as it was not found", tableName, e); |
| } |
| } |
| |
| @Test |
| public void testConcurrentTableCreations() throws Exception { |
| final Configuration conf = getConfiguration(); |
| Assume.assumeTrue("Test only applies when DynamoDB is used for S3Guard", |
| conf.get(Constants.S3_METADATA_STORE_IMPL).equals( |
| Constants.S3GUARD_METASTORE_DYNAMO)); |
| |
| DynamoDBMetadataStore ms = new DynamoDBMetadataStore(); |
| ms.initialize(getFileSystem()); |
| DynamoDB db = ms.getDynamoDB(); |
| |
| String tableName = "testConcurrentTableCreations" + new Random().nextInt(); |
| conf.setBoolean(Constants.S3GUARD_DDB_TABLE_CREATE_KEY, true); |
| conf.set(Constants.S3GUARD_DDB_TABLE_NAME_KEY, tableName); |
| |
| String region = conf.getTrimmed(S3GUARD_DDB_REGION_KEY); |
| if (StringUtils.isEmpty(region)) { |
| // no region set, so pick it up from the test bucket |
| conf.set(S3GUARD_DDB_REGION_KEY, getFileSystem().getBucketLocation()); |
| } |
| int concurrentOps = 16; |
| int iterations = 4; |
| |
| failIfTableExists(db, tableName); |
| |
| for (int i = 0; i < iterations; i++) { |
| ExecutorService executor = Executors.newFixedThreadPool( |
| concurrentOps, new ThreadFactory() { |
| private AtomicInteger count = new AtomicInteger(0); |
| |
| public Thread newThread(Runnable r) { |
| return new Thread(r, |
| "testConcurrentTableCreations" + count.getAndIncrement()); |
| } |
| }); |
| ((ThreadPoolExecutor) executor).prestartAllCoreThreads(); |
| Future<Exception>[] futures = new Future[concurrentOps]; |
| for (int f = 0; f < concurrentOps; f++) { |
| final int index = f; |
| futures[f] = executor.submit(new Callable<Exception>() { |
| @Override |
| public Exception call() throws Exception { |
| |
| ContractTestUtils.NanoTimer timer = |
| new ContractTestUtils.NanoTimer(); |
| |
| Exception result = null; |
| try (DynamoDBMetadataStore store = new DynamoDBMetadataStore()) { |
| store.initialize(conf); |
| } catch (Exception e) { |
| LOG.error(e.getClass() + ": " + e.getMessage()); |
| result = e; |
| } |
| |
| timer.end("Parallel DynamoDB client creation %d", index); |
| LOG.info("Parallel DynamoDB client creation {} ran from {} to {}", |
| index, timer.getStartTime(), timer.getEndTime()); |
| return result; |
| } |
| }); |
| } |
| List<Exception> exceptions = new ArrayList<>(concurrentOps); |
| for (int f = 0; f < concurrentOps; f++) { |
| Exception outcome = futures[f].get(); |
| if (outcome != null) { |
| exceptions.add(outcome); |
| } |
| } |
| deleteTable(db, tableName); |
| int exceptionsThrown = exceptions.size(); |
| if (exceptionsThrown > 0) { |
| // at least one exception was thrown. Fail the test & nest the first |
| // exception caught |
| throw new AssertionError(exceptionsThrown + "/" + concurrentOps + |
| " threads threw exceptions while initializing on iteration " + i, |
| exceptions.get(0)); |
| } |
| } |
| } |
| } |