Hi @szymon_dybczak, 

Thank you for your reply, but your advice doesn't work for me.  I am unable to change the message size because I have to use Serverless.  Also, I tried your code using temp but that also doesn't work.  It gives this error: 

SparkConnectGrpcException: <_MultiThreadedRendezvous of RPC that terminated with:

                status = StatusCode.RESOURCE_EXHAUSTED

                details = "CLIENT: Sent message larger than max (200529416 vs. 134217728)"