@pxm    NiFi sets not restriction on the data size that can be processed.   Ingested data becomes the content portion of a NiFi FlowFile and is written to the content repository.  The data is not read again unless a processor needs to read the content; otherwise, only the FlowFile attributes/metadata is passed from processor component to another component.  So you need to make sure you have sufficient storage space for the NIFi content_repository.  It is also strongly recommended that this dedicated storage separate from any other NiFi repository. Beyond that, any limitation here will be on network and disk IO.   Thanks, Matt ... View more