| /* |
| * 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.scale; |
| |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.fs.s3a.S3AFileSystem; |
| import org.junit.Test; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.OutputStream; |
| |
| import static org.apache.hadoop.fs.contract.ContractTestUtils.*; |
| |
| /** |
| * Tests for create(): performance and/or load testing. |
| */ |
| public class ITestS3ACreatePerformance extends S3AScaleTestBase { |
| private static final Logger LOG = LoggerFactory.getLogger( |
| ITestS3ADirectoryPerformance.class); |
| |
| private Path basePath; |
| private int basePathDepth; |
| private static final int PATH_DEPTH = 10; |
| |
| @Override |
| public void setup() throws Exception { |
| super.setup(); |
| basePath = getTestPath(); |
| basePathDepth = basePath.depth(); |
| } |
| |
| /** |
| * Test rate at which we can create deeply-nested files from a single thread. |
| * @throws Exception |
| */ |
| @Test |
| public void testDeepSequentialCreate() throws Exception { |
| long numOperations = getOperationCount(); |
| S3AFileSystem fs = getFileSystem(); |
| |
| NanoTimer timer = new NanoTimer(); |
| for (int i = 0; i < numOperations; i++) { |
| Path p = getPathIteration(i, PATH_DEPTH); |
| OutputStream out = fs.create(p); |
| out.write(40); // one byte file with some value 40 |
| out.close(); |
| } |
| timer.end("Time to create %d files of depth %d", getOperationCount(), |
| PATH_DEPTH); |
| LOG.info("Time per create: {} msec", |
| timer.nanosPerOperation(numOperations) / 1000); |
| } |
| |
| /* Get a unique path of depth totalDepth for given test iteration. */ |
| private Path getPathIteration(long iter, int totalDepth) throws Exception { |
| assertTrue("Test path too long, increase PATH_DEPTH in test.", |
| totalDepth > basePathDepth); |
| |
| int neededDirs = totalDepth - basePathDepth - 1; |
| StringBuilder sb = new StringBuilder(); |
| for (int i = 0; i < neededDirs; i++) { |
| sb.append("iter-").append(iter); |
| sb.append("-dir-").append(i); |
| sb.append("/"); |
| } |
| sb.append("file").append(iter); |
| return new Path(basePath, sb.toString()); |
| } |
| } |