You can refer to this article and tune the logback.xml file to delete and rollover based log files based on you space constraints https://community.cloudera.com/t5/Community-Articles/Understanding-how-the-logback-xml-configuration-in-NiFi/ta-p/248662   If you found this response assisted with your issue, please take a moment to login and click on "Accept as Solution" below this post. Thank you, Chandan ... View more

@gizo ,   In your processor you set "Ranger Key Value" to "${dynamodb.item.range.key.value}". This would reference to an attribute in your flowfile, but from the details you provided, there's no such attribute there. This may be the cause of the error.   You must ensure that the attribute exists in the flowfile so that you can reference it in the processor configuration.   Cheers, André   ... View more