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From "Mckee, Justin B." <>
Subject RE: Having trouble pushing files to HDFS
Date Tue, 05 May 2015 12:53:35 GMT

Yeah those are never fun to see. I have included the stacktrace that I got from that log file

2015-05-05 06:26:38,430 ERROR [pool-19-thread-16] o.a.n.c.s.StandardProcessScheduler Failed
to invoke @OnScheduled method due to java.lang.NullPointerException

java.lang.NullPointerException: null

                at org.apache.nifi.processor.SimpleProcessLogger.addProcessorAndThrowable(

                at org.apache.nifi.processor.SimpleProcessLogger.error(

                at org.apache.nifi.controller.scheduling.StandardProcessScheduler$

                at java.util.concurrent.ThreadPoolExecutor.runWorker(

                at java.util.concurrent.ThreadPoolExecutor$

                at [na:1.7.0_45]



From: Joe Witt []
Sent: Tuesday, May 05, 2015 8:08 AM
Subject: Re: Having trouble pushing files to HDFS


Seeing a nullpointer is a bug no matter what so thanks for sending this.  Can you check in
the logs directory of nifi to see if the nifi-app.log has the full stacktrace and if so send

On May 5, 2015 6:33 AM, "Mckee, Justin B." <<>>
Good Morning,

I have created a Nifi flow to grab zip files from a directory, unpack them and then push them
to HDFS. I am fairly certain that my configuration of the putHDFS processor is correct, however,
when I run the flow I get an error message on the putHDFS processor. The error is listed below.
Any ideas as to what could be causing this?

PutHDFS[id=c1e7a37c-9a3c-47ae-bac1-e46ec6859d76] failed to invoke @OnScheduled method due
to java.lang.NullPointerException; processor will not be scheduled to run: java.lang.NullPointerException

Any help would be greatly appreciated.


Justin McKee

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