Yes you are absolutely right: you have the original source of a split within the attributes. In fact I'd say that it will be complex to handle a file that you split in rows if you want to perform some logic at file level with the rows. In this case, you want to split rows, and you need all the rows, to confirm a value of one single row. It is possible depending of your use case and using something like the distributed cache but it is easier with ExecuteScript (even more if you want to introduce some logic to reject or not the whole flow file). In short, it greatly depends of all the actions you want to perform along the flow and how you want to optimize I/O to meet performance expectations. ... View more