gaborgsomogyi commented on issue #19096: [SPARK-21869][SS] A cached Kafka producer should not be closed if any task is using it - adds inuse tracking. URL: https://github.com/apache/spark/pull/19096#issuecomment-477030628 Not sure its relevant: ``` 19/03/27 00:05:14.049 Thread-3 ERROR KafkaTestUtils: Found a leak KafkaTestUtils. org.apache.spark.SparkException: It was created at: at org.apache.spark.sql.kafka010.KafkaTestUtils.setup(KafkaTestUtils.scala:134) at org.apache.spark.sql.kafka010.KafkaDataConsumerSuite.beforeAll(KafkaDataConsumerSuite.scala:43) at org.scalatest.BeforeAndAfterAll.liftedTree1$1(BeforeAndAfterAll.scala:212) at org.scalatest.BeforeAndAfterAll.run(BeforeAndAfterAll.scala:210) at org.scalatest.BeforeAndAfterAll.run$(BeforeAndAfterAll.scala:208) at org.apache.spark.SparkFunSuite.run(SparkFunSuite.scala:54) at org.scalatest.tools.Framework.org$scalatest$tools$Framework$$runSuite(Framework.scala:314) at org.scalatest.tools.Framework$ScalaTestTask.execute(Framework.scala:507) at sbt.ForkMain$Run$2.call(ForkMain.java:296) at sbt.ForkMain$Run$2.call(ForkMain.java:286) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) ```
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