Hi, a few days ago I wrote script that sends the real time events to Event Hub. I used Azure Durable Functions to implement parallelism, and in doing so I used partition_key to ensure events with same id is directed to same partition. For some reason I thought the key can be single number and thus I used int types as partition keys, and while sending I never had any error about it. Later I implemented another function App that listens to Event Hub, and triggered when new message is received in Even Hub, and while doing so I was getting the following error at each firing:
Unable to cast object of type 'System.Int32' to type 'System.String

At first I thought may be this is due to encoding of str files that send which took me quite a long time to figure out this was because my usage of int value as partition key due to which Event Hub backend could not generate partition key hashes.

I am wondering why no Exception is raised if int type is passed as partition_key argument at the time of sending message string, and may be this is bug to be considered.