atris commented on code in PR #8636: URL: https://github.com/apache/pinot/pull/8636#discussion_r865234082
########## pinot-segment-local/src/test/java/org/apache/pinot/segment/local/realtime/impl/invertedindex/RealtimeNativeTextIndexConcurrentTest.java: ########## @@ -0,0 +1,306 @@ +/** + * 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.pinot.segment.local.realtime.impl.invertedindex; + +import java.io.IOException; +import java.util.ArrayList; +import java.util.List; +import java.util.Set; +import java.util.concurrent.ConcurrentSkipListSet; +import java.util.concurrent.CountDownLatch; +import java.util.concurrent.ExecutorService; +import java.util.concurrent.Executors; +import org.testng.annotations.AfterClass; +import org.testng.annotations.BeforeClass; +import org.testng.annotations.Test; + +import static org.testng.AssertJUnit.assertEquals; +import static org.testng.AssertJUnit.assertTrue; + + +public class RealtimeNativeTextIndexConcurrentTest { + private ExecutorService _threadPool; + private Set<String> _resultSet; + + @BeforeClass + private void setup() { + _threadPool = Executors.newFixedThreadPool(10); + _resultSet = new ConcurrentSkipListSet<>(); + } + + @AfterClass + private void shutDown() { + _threadPool.shutdown(); + } + + @Test + public void testConcurrentWriteAndRead() + throws InterruptedException, IOException { + CountDownLatch countDownLatch = new CountDownLatch(2); + List<String> words = new ArrayList<>(); + words.add("ab"); + words.add("abba"); + words.add("aba"); + words.add("bab"); + words.add("cdd"); + words.add("efg"); + + try (RealtimeNativeTextIndex textIndex = new RealtimeNativeTextIndex("testFSTColumn")) { + _threadPool.submit(() -> { + try { + performReads(textIndex, words, 10, 200, countDownLatch); + } catch (InterruptedException e) { + e.printStackTrace(); + } + }); + + _threadPool.submit(() -> { + try { + performWrites(textIndex, words, 10, countDownLatch); + } catch (InterruptedException e) { + e.printStackTrace(); + } + }); + + countDownLatch.await(); + } + + assertEquals(_resultSet.size(), words.size()); + + assertTrue("ab not found in result set", _resultSet.contains("ab")); + assertTrue("abba not found in result set", _resultSet.contains("abba")); + assertTrue("aba not found in result set", _resultSet.contains("aba")); + assertTrue("bab not found in result set", _resultSet.contains("bab")); + assertTrue("cdd not found in result set", _resultSet.contains("cdd")); + assertTrue("efg not found in result set", _resultSet.contains("efg")); + } + + @Test + public void testConcurrentWriteWithMultipleThreads() + throws InterruptedException, IOException { + List<String> firstThreadWords = new ArrayList<>(); + List<String> secondThreadWords = new ArrayList<>(); + List<String> mergedThreadWords = new ArrayList<>(); + CountDownLatch countDownLatch = new CountDownLatch(3); + firstThreadWords.add("ab"); + firstThreadWords.add("abba"); + firstThreadWords.add("aba"); + secondThreadWords.add("bab"); + secondThreadWords.add("cdd"); + secondThreadWords.add("efg"); + + mergedThreadWords.addAll(firstThreadWords); + mergedThreadWords.addAll(secondThreadWords); + + try (RealtimeNativeTextIndex textIndex = new RealtimeNativeTextIndex("testFSTColumn")) { + _threadPool.submit(() -> { + try { + performReads(textIndex, mergedThreadWords, 10, 200, countDownLatch); + } catch (InterruptedException e) { + e.printStackTrace(); + } + }); + + _threadPool.submit(() -> { + try { + performWrites(textIndex, firstThreadWords, 10, countDownLatch); + } catch (InterruptedException e) { + e.printStackTrace(); + } + }); + + _threadPool.submit(() -> { + try { + performWrites(textIndex, secondThreadWords, 10, countDownLatch); + } catch (InterruptedException e) { + e.printStackTrace(); + } + }); + + countDownLatch.await(); + } + + assertEquals(_resultSet.size(), mergedThreadWords.size()); + + assertTrue("ab not found in result set", _resultSet.contains("ab")); Review Comment: That's the message that will be shown if the element is not found -- This is an automated message from the Apache Git Service. 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