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".
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
