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java.lang.InterruptedException: 	at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2072)	at java.util.concurrent.ThreadPoolExecutor.awaitTermination(ThreadPoolExecutor.java:1468)	at kafka.utils.KafkaScheduler.shutdown(KafkaScheduler.scala:88)	at kafka.consumer.ZookeeperConsumerConnector.liftedTree1$1(ZookeeperConsumerConnector.scala:195)	at kafka.consumer.ZookeeperConsumerConnector.shutdown(ZookeeperConsumerConnector.scala:193)	at kafka.javaapi.consumer.ZookeeperConsumerConnector.shutdown(ZookeeperConsumerConnector.scala:119)	at io.druid.query.lookup.KafkaLookupExtractorFactory$2.run(KafkaLookupExtractorFactory.java:229)	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)	at java.util.concurrent.FutureTask.run(FutureTask.java:262)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)	at java.lang.Thread.run(Thread.java:745)