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From Conrad Crampton <conrad.cramp...@SecData.com>
Subject NPE MergeContent processor
Date Wed, 09 Nov 2016 16:57:51 GMT
Hi,
I saw this error after I upgraded to 1.0.0 but thought it was maybe due to the issues I had
with that upgrade (entirely my fault it turns out!), but I have seen it a number of times
since so I turned debugging on to get a better stacktrace. Relevant log section as below.
Nothing out of the ordinary, and I never saw this in v0.6.1 or below.
I would have raised a Jira issue, but after logging in to Jira it only let me create a service
desk request (which didn’t sound right).
Regards
Conrad

2016-11-09 16:43:46,413 DEBUG [Timer-Driven Process Thread-5] o.a.n.processors.standard.MergeContent
MergeContent[id=12c0bec7-68b7-3b60-a020-afcc7b4599e7] has chosen to yield its resources; will
not be scheduled to run again for 1000 milliseconds
2016-11-09 16:43:46,414 DEBUG [Timer-Driven Process Thread-5] o.a.n.processors.standard.MergeContent
MergeContent[id=8db3bb68-0354-3116-96c5-dc80854ef116] Binned 42 FlowFiles
2016-11-09 16:43:46,418 INFO [Timer-Driven Process Thread-5] o.a.n.processors.standard.MergeContent
MergeContent[id=8db3bb68-0354-3116-96c5-dc80854ef116] Merged [StandardFlowFileRecord[uuid=5e846136-0a7a-46fb-be96-8200d5cdd33d,claim=StandardContentClaim
[resourceClaim=StandardResourceClaim[id=1475059643340-275849, container=default, section=393],
offset=567158, length=2337],offset=0,name=17453303363322987,size=2337], StandardFlowFileRecord[uuid=a5f4bd55-82e3-40cb-9fa9-86b9e6816f67,claim=StandardContentClaim
[resourceClaim=StandardResourceClaim[id=1475059643340-275849, container=default, section=393],
offset=573643, length=2279],offset=0,name=17453303351196175,size=2279], StandardFlowFileRecord[uuid=c1ca745b-660a-49cd-82e5-fa8b9a2f4165,claim=StandardContentClaim
[resourceClaim=StandardResourceClaim[id=1475059643340-275849, container=default, section=393],
offset=583957, length=2223],offset=0,name=17453303531879367,size=2223], StandardFlowFileRecord[uuid=<null>,claim=StandardContentClaim
[resourceClaim=StandardResourceClaim[id=1475059643340-275849, container=default, section=393],
offset=595617, length=2356],offset=0,name=<null>,size=2356], StandardFlowFileRecord[uuid=<null>,claim=StandardContentClaim
[resourceClaim=StandardResourceClaim[id=1475059643340-275849, container=default, section=393],
offset=705637, length=2317],offset=0,name=<null>,size=2317], StandardFlowFileRecord[uuid=<null>,claim=StandardContentClaim
[resourceClaim=StandardResourceClaim[id=1475059643340-275849, container=default, section=393],
offset=725376, length=2333],offset=0,name=<null>,size=2333], StandardFlowFileRecord[uuid=<null>,claim=StandardContentClaim
[resourceClaim=StandardResourceClaim[id=1475059643340-275849, container=default, section=393],
offset=728703, length=2377],offset=0,name=<null>,size=2377]] into StandardFlowFileRecord[uuid=1ef3e5a0-f8db-49eb-935d-ed3c991fd631,claim=StandardContentClaim
[resourceClaim=StandardResourceClaim[id=1478709819819-416, container=default, section=416],
offset=982498, length=4576],offset=0,name=3649103647775837,size=4576]
2016-11-09 16:43:46,418 ERROR [Timer-Driven Process Thread-5] o.a.n.processors.standard.MergeContent
MergeContent[id=8db3bb68-0354-3116-96c5-dc80854ef116] MergeContent[id=8db3bb68-0354-3116-96c5-dc80854ef116]
failed to process session due to java.lang.NullPointerException: java.lang.NullPointerException
2016-11-09 16:43:46,422 ERROR [Timer-Driven Process Thread-5] o.a.n.processors.standard.MergeContent
java.lang.NullPointerException: null
        at org.apache.nifi.stream.io.DataOutputStream.writeUTF(DataOutputStream.java:300)
~[nifi-utils-1.0.0.jar:1.0.0]
        at org.apache.nifi.stream.io.DataOutputStream.writeUTF(DataOutputStream.java:281)
~[nifi-utils-1.0.0.jar:1.0.0]
        at org.apache.nifi.provenance.StandardRecordWriter.writeUUID(StandardRecordWriter.java:257)
~[na:na]
        at org.apache.nifi.provenance.StandardRecordWriter.writeUUIDs(StandardRecordWriter.java:266)
~[na:na]
        at org.apache.nifi.provenance.StandardRecordWriter.writeRecord(StandardRecordWriter.java:232)
~[na:na]
        at org.apache.nifi.provenance.PersistentProvenanceRepository.persistRecord(PersistentProvenanceRepository.java:766)
~[na:na]
        at org.apache.nifi.provenance.PersistentProvenanceRepository.registerEvents(PersistentProvenanceRepository.java:432)
~[na:na]
        at org.apache.nifi.controller.repository.StandardProcessSession.updateProvenanceRepo(StandardProcessSession.java:713)
~[nifi-framework-core-1.0.0.jar:1.0.0]
        at org.apache.nifi.controller.repository.StandardProcessSession.commit(StandardProcessSession.java:311)
~[nifi-framework-core-1.0.0.jar:1.0.0]
        at org.apache.nifi.controller.repository.StandardProcessSession.commit(StandardProcessSession.java:299)
~[nifi-framework-core-1.0.0.jar:1.0.0]
        at org.apache.nifi.processor.util.bin.BinFiles.processBins(BinFiles.java:256) ~[nifi-processor-utils-1.0.0.jar:1.0.0]
        at org.apache.nifi.processor.util.bin.BinFiles.onTrigger(BinFiles.java:190) ~[nifi-processor-utils-1.0.0.jar:1.0.0]
        at org.apache.nifi.controller.StandardProcessorNode.onTrigger(StandardProcessorNode.java:1064)
~[nifi-framework-core-1.0.0.jar:1.0.0]
        at org.apache.nifi.controller.tasks.ContinuallyRunProcessorTask.call(ContinuallyRunProcessorTask.java:136)
[nifi-framework-core-1.0.0.jar:1.0.0]
        at org.apache.nifi.controller.tasks.ContinuallyRunProcessorTask.call(ContinuallyRunProcessorTask.java:47)
[nifi-framework-core-1.0.0.jar:1.0.0]
        at org.apache.nifi.controller.scheduling.TimerDrivenSchedulingAgent$1.run(TimerDrivenSchedulingAgent.java:132)
[nifi-framework-core-1.0.0.jar:1.0.0]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_51]
        at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) [na:1.8.0_51]
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
[na:1.8.0_51]
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
[na:1.8.0_51]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
[na:1.8.0_51]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
[na:1.8.0_51]
        at java.lang.Thread.run(Thread.java:745) [na:1.8.0_51]
2016-11-09 16:43:46,422 WARN [Timer-Driven Process Thread-5] o.a.n.processors.standard.MergeContent
MergeContent[id=8db3bb68-0354-3116-96c5-dc80854ef116] Processor Administratively Yielded for
1 sec due to processing failure
2016-11-09 16:43:46,422 WARN [Timer-Driven Process Thread-5] o.a.n.c.t.ContinuallyRunProcessorTask
Administratively Yielding MergeContent[id=8db3bb68-0354-3116-96c5-dc80854ef116] due to uncaught
Exception: java.lang.NullPointerException
2016-11-09 16:43:46,423 WARN [Timer-Driven Process Thread-5] o.a.n.c.t.ContinuallyRunProcessorTask
java.lang.NullPointerException: null
        at org.apache.nifi.stream.io.DataOutputStream.writeUTF(DataOutputStream.java:300)
~[nifi-utils-1.0.0.jar:1.0.0]
        at org.apache.nifi.stream.io.DataOutputStream.writeUTF(DataOutputStream.java:281)
~[nifi-utils-1.0.0.jar:1.0.0]
        at org.apache.nifi.provenance.StandardRecordWriter.writeUUID(StandardRecordWriter.java:257)
~[na:na]
        at org.apache.nifi.provenance.StandardRecordWriter.writeUUIDs(StandardRecordWriter.java:266)
~[na:na]
        at org.apache.nifi.provenance.StandardRecordWriter.writeRecord(StandardRecordWriter.java:232)
~[na:na]
        at org.apache.nifi.provenance.PersistentProvenanceRepository.persistRecord(PersistentProvenanceRepository.java:766)
~[na:na]
        at org.apache.nifi.provenance.PersistentProvenanceRepository.registerEvents(PersistentProvenanceRepository.java:432)
~[na:na]
        at org.apache.nifi.controller.repository.StandardProcessSession.updateProvenanceRepo(StandardProcessSession.java:713)
~[nifi-framework-core-1.0.0.jar:1.0.0]
        at org.apache.nifi.controller.repository.StandardProcessSession.commit(StandardProcessSession.java:311)
~[nifi-framework-core-1.0.0.jar:1.0.0]
        at org.apache.nifi.controller.repository.StandardProcessSession.commit(StandardProcessSession.java:299)
~[nifi-framework-core-1.0.0.jar:1.0.0]
        at org.apache.nifi.processor.util.bin.BinFiles.processBins(BinFiles.java:256) ~[nifi-processor-utils-1.0.0.jar:1.0.0]
        at org.apache.nifi.processor.util.bin.BinFiles.onTrigger(BinFiles.java:190) ~[nifi-processor-utils-1.0.0.jar:1.0.0]
        at org.apache.nifi.controller.StandardProcessorNode.onTrigger(StandardProcessorNode.java:1064)
~[nifi-framework-core-1.0.0.jar:1.0.0]
        at org.apache.nifi.controller.tasks.ContinuallyRunProcessorTask.call(ContinuallyRunProcessorTask.java:136)
[nifi-framework-core-1.0.0.jar:1.0.0]
        at org.apache.nifi.controller.tasks.ContinuallyRunProcessorTask.call(ContinuallyRunProcessorTask.java:47)
[nifi-framework-core-1.0.0.jar:1.0.0]
        at org.apache.nifi.controller.scheduling.TimerDrivenSchedulingAgent$1.run(TimerDrivenSchedulingAgent.java:132)
[nifi-framework-core-1.0.0.jar:1.0.0]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_51]
        at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) [na:1.8.0_51]
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
[na:1.8.0_51]
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
[na:1.8.0_51]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
[na:1.8.0_51]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
[na:1.8.0_51]
        at java.lang.Thread.run(Thread.java:745) [na:1.8.0_51]


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