Kafka (Avro) --> HDFS (ORC) in proper partition

[E Worthy]

Hello,
I have Avro data coming in from Kafka and I need to place this data into the 
proper HDFS partition based on values in each row of data. Is this possible in 
Nifi? I'm looking at the PutHDFS, ConvertAvroToORC, and expressions. Do I 
somehow set a variable using an expression for each row and use that in the 
PutHDFS?
Thanks for any help,Eric