Github user zsxwing commented on a diff in the pull request: https://github.com/apache/spark/pull/20767#discussion_r173332248 --- Diff: external/kafka-0-10-sql/src/test/scala/org/apache/spark/sql/kafka010/KafkaDataConsumerSuite.scala --- @@ -0,0 +1,111 @@ +/* + * 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.spark.sql.kafka010 + +import java.util.concurrent.{Executors, TimeUnit} + +import scala.collection.JavaConverters._ +import scala.concurrent.{ExecutionContext, Future} +import scala.concurrent.duration.Duration +import scala.util.Random + +import org.apache.kafka.clients.consumer.ConsumerConfig +import org.apache.kafka.common.TopicPartition +import org.apache.kafka.common.serialization.ByteArrayDeserializer +import org.scalatest.PrivateMethodTester + +import org.apache.spark.sql.test.SharedSQLContext +import org.apache.spark.util.ThreadUtils + +class KafkaDataConsumerSuite extends SharedSQLContext with PrivateMethodTester { + + protected var testUtils: KafkaTestUtils = _ + + override def beforeAll(): Unit = { + super.beforeAll() + testUtils = new KafkaTestUtils(Map[String, Object]()) + testUtils.setup() + } + + override def afterAll(): Unit = { + if (testUtils != null) { + testUtils.teardown() + testUtils = null + } + super.afterAll() + } + + test("SPARK-19886: Report error cause correctly in reportDataLoss") { + val cause = new Exception("D'oh!") + val reportDataLoss = PrivateMethod[Unit]('reportDataLoss0) + val e = intercept[IllegalStateException] { + InternalKafkaConsumer.invokePrivate(reportDataLoss(true, "message", cause)) + } + assert(e.getCause === cause) + } + + test("concurrent use of KafkaDataConsumer") { + val topic = "topic" + Random.nextInt() + testUtils.createTopic(topic, 1) + testUtils.sendMessages(topic, (1 to 1000).map(_.toString).toArray) + val topicPartition = new TopicPartition(topic, 0) + + import ConsumerConfig._ + val kafkaParams = Map[String, Object]( + GROUP_ID_CONFIG -> "groupId", + BOOTSTRAP_SERVERS_CONFIG -> testUtils.brokerAddress, + KEY_DESERIALIZER_CLASS_CONFIG -> classOf[ByteArrayDeserializer].getName, + VALUE_DESERIALIZER_CLASS_CONFIG -> classOf[ByteArrayDeserializer].getName, + AUTO_OFFSET_RESET_CONFIG -> "earliest", + ENABLE_AUTO_COMMIT_CONFIG -> "false" + ) + + val numThreads = 50 + val numConsumerUsages = 500 + + val threadpool = Executors.newFixedThreadPool(numThreads) --- End diff -- nit: threadpool should be shut down
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