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    Thrown when an application is trying to use or access an object whose reference equals to null. You are probably trying to use a reference that points to no location in memory as though it were referencing an object.

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via Apache's JIRA Issue Tracker by Koji Kawamura, 1 year ago
java.util.concurrent.ExecutionException: java.lang.NullPointerException
java.lang.IllegalStateException: java.util.concurrent.ExecutionException: java.lang.NullPointerException at org.apache.nifi.processors.kafka.GetKafka.onTrigger(GetKafka.java:367)[na:na] at org.apache.nifi.processor.AbstractProcessor.onTrigger(AbstractProcessor.java:27)[nifi-api-1.0.0-SNAPSHOT.jar:1.0.0-SNAPSHOT] at org.apache.nifi.controller.StandardProcessorNode.onTrigger(StandardProcessorNode.java:1060)[nifi-framework-core-1.0.0-SNAPSHOT.jar:1.0.0-SNAPSHOT] at org.apache.nifi.controller.tasks.ContinuallyRunProcessorTask.call(ContinuallyRunProcessorTask.java:136)[nifi-framework-core-1.0.0-SNAPSHOT.jar:1.0.0-SNAPSHOT] at org.apache.nifi.controller.tasks.ContinuallyRunProcessorTask.call(ContinuallyRunProcessorTask.java:47)[nifi-framework-core-1.0.0-SNAPSHOT.jar:1.0.0-SNAPSHOT] at org.apache.nifi.controller.scheduling.TimerDrivenSchedulingAgent$1.run(TimerDrivenSchedulingAgent.java:123)[nifi-framework-core-1.0.0-SNAPSHOT.jar:1.0.0-SNAPSHOT] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)[na:1.8.0_74] at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)[na:1.8.0_74] at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)[na:1.8.0_74] at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)[na:1.8.0_74] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)[na:1.8.0_74] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)[na:1.8.0_74] at java.lang.Thread.run(Thread.java:745)[na:1.8.0_74]Caused by: java.util.concurrent.ExecutionException: java.lang.NullPointerException at java.util.concurrent.FutureTask.report(FutureTask.java:122)[na:1.8.0_74] at java.util.concurrent.FutureTask.get(FutureTask.java:206)[na:1.8.0_74] at org.apache.nifi.processors.kafka.GetKafka.onTrigger(GetKafka.java:360)[na:na] ... 12 moreCaused by: java.lang.NullPointerException: null at java.util.Hashtable.put(Hashtable.java:459)[na:1.8.0_74] at java.util.Properties.setProperty(Properties.java:166)[na:1.8.0_74] at org.apache.nifi.processors.kafka.GetKafka.createConsumers(GetKafka.java:238)[na:na] at org.apache.nifi.processors.kafka.GetKafka$1.call(GetKafka.java:355)[na:na] at org.apache.nifi.processors.kafka.GetKafka$1.call(GetKafka.java:352)[na:na] at java.util.concurrent.FutureTask.run(FutureTask.java:266)[na:1.8.0_74] ... 3 more