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From Mark Payne <>
Subject Re: NPE in ExtractText
Date Wed, 16 Mar 2016 12:28:25 GMT

What version of NiFi are you running?

There was a bug that was introduced to the latest 'master' branch a few days
ago that caused this, but it has since been fixed. If you are using an already released
version, then we will obviously need to dig a little deeper.


> On Mar 16, 2016, at 8:01 AM, Conrad Crampton <> wrote:
> Hi,
> I’m getting repeated NullPointerException reported for an ExtractText processor (processing
the resultant splits from a ListenSyslog) thus:
> datanode2-cm1.mis-cds.local:9092ExtractText[id=4372efbf-efcf-3065-acd4-b8fdb91d64fb]
ExtractText[id=4372efbf-efcf-3065-acd4-b8fdb91d64fb] failed to process due to java.lang.NullPointerException;
rolling back session: java.lang.NullPointerException
> The same error appears for each node in my cluster too so not specific to one node.
> I have enabled additional logging for ExtractText processor (I think) by adding 
> <logger name="org.apache.nifi.processors.standard.ExtractText" level=“DEBUG" additivity="false">
>         <appender-ref ref="USER_FILE"/>
>  </logger>
> To each logback.xml on each node, but this doesn’t give any more details as to why
the NPE.
> Flowflies are getting through the processor but concerned about the errors as clearly
something isn’t correct so suggestions welcome.
> Thanks
> Conrad
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