java.io.IOException: Not a data file.
org.apache.nifi.processor.exception.ProcessException: IOException thrown from ConvertAvroToJSON[id=4004c598-016b-1000-ffff-ffff850df8b7]: java.io.IOException: Not a data file.
at org.apache.nifi.controller.repository.StandardProcessSession.write(StandardProcessSession.java:2946)
at org.apache.nifi.processors.avro.ConvertAvroToJSON.onTrigger(ConvertAvroToJSON.java:148)
at org.apache.nifi.processor.AbstractProcessor.onTrigger(AbstractProcessor.java:27)
at org.apache.nifi.controller.StandardProcessorNode.onTrigger(StandardProcessorNode.java:1162)
at org.apache.nifi.controller.tasks.ConnectableTask.invoke(ConnectableTask.java:205)
at org.apache.nifi.controller.scheduling.TimerDrivenSchedulingAgent$1.run(TimerDrivenSchedulingAgent.java:117)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
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)
Caused by: java.io.IOException: Not a data file.
at org.apache.avro.file.DataFileStream.initialize(DataFileStream.java:105)
at org.apache.avro.file.DataFileStream.<init>(DataFileStream.java:84)
at org.apache.nifi.processors.avro.ConvertAvroToJSON$1.process(ConvertAvroToJSON.java:179)
at org.apache.nifi.controller.repository.StandardProcessSession.write(StandardProcessSession.java:2925)
... 12 common frames omitted
data: {"City": "Athens", "Edition": 1896, "Sport": "Aquatics", "sub_sport": "Swimming", "Athlete": "HAJOS, Alfred", "country": "HUN", "Gender": "Men", "Event": "100m freestyle", "Event_gender": "M", "Medal": "Gold"}
