Eric, I don't believe it's possible in NiFi per se, because you'd have to set it via a property, and properties have unique and static names so EL is not evaluated on them. However you can use Groovy with ExecuteScript to do this, check out [1] under the recipe "Add an attribute to a flow file".
Regards, Matt [1] https://community.cloudera.com/t5/Community-Articles/ExecuteScript-Cookbook-part-1/ta-p/248922 On Tue, Jan 5, 2021 at 2:44 PM Eric Secules <esecu...@gmail.com> wrote: > > Hello, > > I was wondering if it's possible to name an attribute based on an EL > statement like > > MyAttr.${fragment.index} > > Then when flow files are merged back together all the attributes are > preserved. > > Thanks, > Eric
