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Colin Dean commented on NIFI-5612: ---------------------------------- Looks like I have to go town the route of getting the {{UnresolvedUnionException}} out of the {{DataFileWriter.AppendWriteException}} because none of the other information is in scope. I've got this: {code:java} {code} but I've got some time before a maintenance window opens to try it out so I'm going to look through the tests and see what I can add that's more specific examples of what I'm seeing in the schemas of the affected tables. > org.apache.avro.UnresolvedUnionException: Not in union ["null","int"]: 0 > ------------------------------------------------------------------------ > > Key: NIFI-5612 > URL: https://issues.apache.org/jira/browse/NIFI-5612 > Project: Apache NiFi > Issue Type: Bug > Components: Core Framework > Affects Versions: 1.5.0, 1.6.0, 1.7.1 > Environment: Microsoft Windows, MySQL Enterprise 5.0.80 > Reporter: Colin Dean > Priority: Major > Labels: ExecuteSQL, avro, nifi > > I'm seeing this when I execute {{SELECT * FROM <tablename>}} on a few tables > but not on dozens of others in the same database. > {code} > 2018-09-13 01:11:31,434 WARN [Timer-Driven Process Thread-8] > o.a.n.controller.tasks.ConnectableTask Administratively Yielding > ExecuteSQL[id=cf5c0996-eddf-3e05-25a3-c407c5edf990] due to uncaught > Exception: org.apache.avro.file.DataFileWriter$AppendWriteException: > org.apache.avro.UnresolvedUnionException: Not in union ["null","int"]: 0 > org.apache.avro.file.DataFileWriter$AppendWriteException: > org.apache.avro.UnresolvedUnionException: Not in union ["null","int"]: 0 > at org.apache.avro.file.DataFileWriter.append(DataFileWriter.java:308) > at > org.apache.nifi.processors.standard.util.JdbcCommon.convertToAvroStream(JdbcCommon.java:462) > at > org.apache.nifi.processors.standard.ExecuteSQL.lambda$onTrigger$1(ExecuteSQL.java:252) > at > org.apache.nifi.controller.repository.StandardProcessSession.write(StandardProcessSession.java:2625) > at > org.apache.nifi.processors.standard.ExecuteSQL.onTrigger(ExecuteSQL.java:242) > at > org.apache.nifi.processor.AbstractProcessor.onTrigger(AbstractProcessor.java:27) > at > org.apache.nifi.controller.StandardProcessorNode.onTrigger(StandardProcessorNode.java:1165) > at > org.apache.nifi.controller.tasks.ConnectableTask.invoke(ConnectableTask.java:203) > 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:1142) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) > at java.lang.Thread.run(Thread.java:745) > Caused by: org.apache.avro.UnresolvedUnionException: Not in union > ["null","int"]: 0 > at > org.apache.avro.generic.GenericData.resolveUnion(GenericData.java:709) > at > org.apache.avro.generic.GenericDatumWriter.resolveUnion(GenericDatumWriter.java:192) > at > org.apache.avro.generic.GenericDatumWriter.writeWithoutConversion(GenericDatumWriter.java:110) > at > org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:73) > at > org.apache.avro.generic.GenericDatumWriter.writeField(GenericDatumWriter.java:153) > at > org.apache.avro.generic.GenericDatumWriter.writeRecord(GenericDatumWriter.java:143) > at > org.apache.avro.generic.GenericDatumWriter.writeWithoutConversion(GenericDatumWriter.java:105) > at > org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:73) > at > org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:60) > at org.apache.avro.file.DataFileWriter.append(DataFileWriter.java:302) > ... 15 common frames omitted > {code} > I don't know if I can share the database schema – still working with my team > on that – but looking at it, I think it has something to do with the > signedness of int(1) or tinyint(1) because those two are the only numerical > types common to all of the table. -- This message was sent by Atlassian JIRA (v7.6.3#76005)