[NIFI-3927] Extract HL7 Attributes throwing NULLpointerException

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.0.0
• Component/s: Extensions
• Environment: NiFi with HortonWorks
• Flags: Important
• Assignee: Joey Frazee
• Reporter: Raj karan
• Created: 17/May/17 14:16
• Updated: 06/May/19 12:38

Description

I have an HL7 file which I want to put in HBase, So I am parsing this file through ExtractHL7Attributes processor. With the default value for every property processor works with no error but resultant attributes file only have one segment. When I sets `Use Segment Names` property true it throws NULLPointerException.

Stack trace:
2017-05-17 11:11:58,390 INFO [Heartbeat Monitor Thread-1] o.a.n.c.c.h.AbstractHeartbeatMonitor Finished processing 1 heartbeats in 4756 nanos
2017-05-17 11:11:58,847 ERROR [Timer-Driven Process Thread-2] o.a.n.p.hl7.ExtractHL7Attributes ExtractHL7Attributes[id=bea89fef-86db-1094-ffff-ffff81c2e524] Failed to extract attributes from StandardFlowFileRecord[uuid=73a649fe-261c-40d2-bad7-b0bc595c0158,claim=StandardContentClaim [resourceClaim=StandardResourceClaim[id=1495030753601-25550, container=default, section=974], offset=912561, length=288],offset=0,name=source.txt,size=288] due to ca.uhn.hl7v2.HL7Exception: The HL7 version 2.3
EVN is not recognized: ca.uhn.hl7v2.HL7Exception: The HL7 version 2.3
EVN is not recognized
2017-05-17 11:11:58,848 ERROR [Timer-Driven Process Thread-2] o.a.n.p.hl7.ExtractHL7Attributes
ca.uhn.hl7v2.HL7Exception: The HL7 version 2.3
EVN is not recognized
at ca.uhn.hl7v2.parser.Parser.assertVersionExists(Parser.java:527) ~[hapi-base-2.2.jar:na]
at ca.uhn.hl7v2.parser.Parser.parse(Parser.java:208) ~[hapi-base-2.2.jar:na]
at ca.uhn.hl7v2.parser.PipeParser.parse(PipeParser.java:1018) ~[hapi-base-2.2.jar:na]
at org.apache.nifi.processors.hl7.ExtractHL7Attributes.onTrigger(ExtractHL7Attributes.java:195) ~[nifi-hl7-processors-1.0.0.2.0.2.0-17.jar:1.0.0.2.0.2.0-17]
at org.apache.nifi.processor.AbstractProcessor.onTrigger(AbstractProcessor.java:27) [nifi-api-1.0.0.2.0.2.0-17.jar:1.0.0.2.0.2.0-17]
at org.apache.nifi.controller.StandardProcessorNode.onTrigger(StandardProcessorNode.java:1064) [nifi-framework-core-1.0.0.2.0.2.0-17.jar:1.0.0.2.0.2.0-17]
at org.apache.nifi.controller.tasks.ContinuallyRunProcessorTask.call(ContinuallyRunProcessorTask.java:136) [nifi-framework-core-1.0.0.2.0.2.0-17.jar:1.0.0.2.0.2.0-17]
at org.apache.nifi.controller.tasks.ContinuallyRunProcessorTask.call(ContinuallyRunProcessorTask.java:47) [nifi-framework-core-1.0.0.2.0.2.0-17.jar:1.0.0.2.0.2.0-17]
at org.apache.nifi.controller.scheduling.TimerDrivenSchedulingAgent$1.run(TimerDrivenSchedulingAgent.java:132) [nifi-framework-core-1.0.0.2.0.2.0-17.jar:1.0.0.2.0.2.0-17]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_77]
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) [na:1.8.0_77]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) [na:1.8.0_77]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) [na:1.8.0_77]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_77]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_77]
at java.lang.Thread.run(Thread.java:745) [na:1.8.0_77]
2017-05-17 11:11:58,852 ERROR [Timer-Driven Process Thread-1] o.a.n.p.hl7.ExtractHL7Attributes ExtractHL7Attributes[id=bea89fef-86db-1094-ffff-ffff81c2e524] ExtractHL7Attributes[id=bea89fef-86db-1094-ffff-ffff81c2e524] failed to process due to java.lang.NullPointerException; rolling back session: java.lang.NullPointerException
2017-05-17 11:11:58,852 ERROR [Timer-Driven Process Thread-1] o.a.n.p.hl7.ExtractHL7Attributes
java.lang.NullPointerException: null
2017-05-17 11:11:58,852 ERROR [Timer-Driven Process Thread-1] o.a.n.p.hl7.ExtractHL7Attributes ExtractHL7Attributes[id=bea89fef-86db-1094-ffff-ffff81c2e524] ExtractHL7Attributes[id=bea89fef-86db-1094-ffff-ffff81c2e524] failed to process session due to java.lang.NullPointerException: java.lang.NullPointerException
2017-05-17 11:11:58,852 ERROR [Timer-Driven Process Thread-1] o.a.n.p.hl7.ExtractHL7Attributes
java.lang.NullPointerException: null
2017-05-17 11:11:58,852 WARN [Timer-Driven Process Thread-1] o.a.n.p.hl7.ExtractHL7Attributes ExtractHL7Attributes[id=bea89fef-86db-1094-ffff-ffff81c2e524] Processor Administratively Yielded for 1 sec due to processing failure
2017-05-17 11:11:58,852 WARN [Timer-Driven Process Thread-1] o.a.n.c.t.ContinuallyRunProcessorTask Administratively Yielding ExtractHL7Attributes[id=bea89fef-86db-1094-ffff-ffff81c2e524] due to uncaught Exception: java.lang.NullPointerException
2017-05-17 11:11:58,852 WARN [Timer-Driven Process Thread-1] o.a.n.c.t.ContinuallyRunProcessorTask
java.lang.NullPointerException: null