Combining Attributes in NiFi

[#1]

Hi, I have a scenario where I get a data file & control file. The data file has the actual data & the control file has the details about the data file, say filename,size etc. Below are the file names,

file_name - ABC.txt ctrl_file_name - CTRL_ABC.txt

I have to read the files from local filesystem & write into hdfs.

And say, I have the below flow in NiFi, List File -> Update attribute(file_name - ABC.txt,ctrl_file_name - CTRL_ABC.txt) Is there a way to combine these 2 attributes & read it using Fetch file processor & write it at once into HDFS?

Thanks!

[#2]

Thank you. I solved it by using notify and wait processors. But I think the LookupAttribute solution sounds very interesting way for enrichment...Thanks Matt, I 've learned a lot from your responses.

[#3]

@mburgess - how did we achieve with this approach. do you have a sample?

[#4]

@kcc, as this is an older post, you would have a better chance of receiving a resolution by starting a new thread. This will also be an opportunity to provide details specific to your environment that could aid others in assisting you with a more accurate answer to your question. You can link this thread as a reference in your new post.