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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