Mark Payne created NIFI-4749:
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Summary: QueryRecord throws NPE when selecting complex objects if
writer inherits schema
Key: NIFI-4749
URL: https://issues.apache.org/jira/browse/NIFI-4749
Project: Apache NiFi
Issue Type: Bug
Affects Versions: 1.4.0
Reporter: Mark Payne
Assignee: Mark Payne
Fix For: 1.5.0
If we create a QueryRecord processor and choose a Record Writer that has a
Schema Write Strategy of "Inherit Record," all works okay if the data being
queried is 'flat' data. But if the data is hierarchical it can fail when
attempting to write out the data, throwing a NullPointerException:
{code}
2018-01-08 15:15:07,645 ERROR [NiFi logging handler] org.apache.nifi.StdErr
java.lang.NullPointerException
2018-01-08 15:15:07,648 ERROR [NiFi logging handler] org.apache.nifi.StdErr
at org.apache.nifi.json.WriteJsonResult.writeRecord(WriteJsonResult.java:167)
2018-01-08 15:15:07,648 ERROR [NiFi logging handler] org.apache.nifi.StdErr
at org.apache.nifi.json.WriteJsonResult.writeValue(WriteJsonResult.java:348)
2018-01-08 15:15:07,648 ERROR [NiFi logging handler] org.apache.nifi.StdErr
at org.apache.nifi.json.WriteJsonResult.writeArray(WriteJsonResult.java:385)
2018-01-08 15:15:07,649 ERROR [NiFi logging handler] org.apache.nifi.StdErr
at org.apache.nifi.json.WriteJsonResult.writeValue(WriteJsonResult.java:372)
2018-01-08 15:15:07,649 ERROR [NiFi logging handler] org.apache.nifi.StdErr
at org.apache.nifi.json.WriteJsonResult.writeRecord(WriteJsonResult.java:181)
2018-01-08 15:15:07,649 ERROR [NiFi logging handler] org.apache.nifi.StdErr
at org.apache.nifi.json.WriteJsonResult.writeRecord(WriteJsonResult.java:128)
2018-01-08 15:15:07,649 ERROR [NiFi logging handler] org.apache.nifi.StdErr
at
org.apache.nifi.serialization.AbstractRecordSetWriter.write(AbstractRecordSetWriter.java:59)
2018-01-08 15:15:07,649 ERROR [NiFi logging handler] org.apache.nifi.StdErr
at
org.apache.nifi.serialization.AbstractRecordSetWriter.write(AbstractRecordSetWriter.java:52)
2018-01-08 15:15:07,649 ERROR [NiFi logging handler] org.apache.nifi.StdErr
at
org.apache.nifi.processors.standard.QueryRecord$1.process(QueryRecord.java:305)
2018-01-08 15:15:07,649 ERROR [NiFi logging handler] org.apache.nifi.StdErr
at
org.apache.nifi.controller.repository.StandardProcessSession.write(StandardProcessSession.java:2571)
2018-01-08 15:15:07,649 ERROR [NiFi logging handler] org.apache.nifi.StdErr
at
org.apache.nifi.processors.standard.QueryRecord.onTrigger(QueryRecord.java:290)
2018-01-08 15:15:07,649 ERROR [NiFi logging handler] org.apache.nifi.StdErr
at
org.apache.nifi.processor.AbstractProcessor.onTrigger(AbstractProcessor.java:27)
2018-01-08 15:15:07,649 ERROR [NiFi logging handler] org.apache.nifi.StdErr
at
org.apache.nifi.controller.StandardProcessorNode.onTrigger(StandardProcessorNode.java:1122)
2018-01-08 15:15:07,649 ERROR [NiFi logging handler] org.apache.nifi.StdErr
at
org.apache.nifi.controller.tasks.ContinuallyRunProcessorTask.call(ContinuallyRunProcessorTask.java:147)
2018-01-08 15:15:07,649 ERROR [NiFi logging handler] org.apache.nifi.StdErr
at
org.apache.nifi.controller.tasks.ContinuallyRunProcessorTask.call(ContinuallyRunProcessorTask.java:47)
2018-01-08 15:15:07,649 ERROR [NiFi logging handler] org.apache.nifi.StdErr
at
org.apache.nifi.controller.scheduling.TimerDrivenSchedulingAgent$1.run(TimerDrivenSchedulingAgent.java:128)
2018-01-08 15:15:07,649 ERROR [NiFi logging handler] org.apache.nifi.StdErr
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
2018-01-08 15:15:07,649 ERROR [NiFi logging handler] org.apache.nifi.StdErr
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
2018-01-08 15:15:07,649 ERROR [NiFi logging handler] org.apache.nifi.StdErr
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
2018-01-08 15:15:07,649 ERROR [NiFi logging handler] org.apache.nifi.StdErr
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
2018-01-08 15:15:07,649 ERROR [NiFi logging handler] org.apache.nifi.StdErr
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
2018-01-08 15:15:07,649 ERROR [NiFi logging handler] org.apache.nifi.StdErr
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
2018-01-08 15:15:07,649 ERROR [NiFi logging handler] org.apache.nifi.StdErr
at java.lang.Thread.run(Thread.java:745)
{code}
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