[NIFI-7347] NPE in MergeRecord

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.9.0
• Fix Version/s: 1.12.0
• Assignee: Mark Payne
• Reporter: Brandon Rhys DeVries
• Created: 09/Apr/20 18:44
• Updated: 15/Apr/20 10:39
• Resolved: 15/Apr/20 10:39

Description

Got an NPE in MergeRecord.  Even after a restart, the processor won't resume processing data.  Even copies of the processor won't process data. 

 

Configuration:

Record Reader: JsonTreeReader
Record Writer: AvroRecordSetWriter
Merge Strategy: Bin-Packing Algorithm
Correlation Attribute Name: No value set
Attribute Strategy: Keep Only Common Attributes
Minimum Number of Records: 10000
Maximum Number of Records: 20000
Minimum Bin Size: 0 B
Maximum Bin Size: No value set
Max Bin Age: 10 sec
Maximum Number of Bins: 10 

Stack Trace:

MergeRecord[id=ef343265-5156-1564-92fa-8f74649fb548] Failed to merge FlowFiles to create new bin due to java.lang.NullPointerException: java.lang.NullPointerException
java.lang.NullPointerException: null
	at org.apache.nifi.processors.standard.merge.RecordBin.complete(RecordBin.java:340)
	at org.apache.nifi.processors.standard.merge.RecordBinManager.handleCompletedBins(RecordBinManager.java:272)
	at org.apache.nifi.processors.standard.merge.RecordBinManager.completeExpiredBins(RecordBinManager.java:238)
	at org.apache.nifi.processors.standard.MergeRecord.onTrigger(MergeRecord.java:350)
	at org.apache.nifi.controller.StandardProcessorNode.onTrigger(StandardProcessorNode.java:1161)
	at org.apache.nifi.controller.tasks.ConnectableTask.invoke(ConnectableTask.java:213)
	at org.apache.nifi.controller.scheduling.TimerDrivenSchedulingAgent$1.run(TimerDrivenSchedulingAgent.java:117)
	at org.apache.nifi.engine.FlowEngine$2.run(FlowEngine.java:110)
	at java.util.concurrent.Executors$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)

Issue Links

• links to: GitHub Pull Request #4210