Network error: RPC frame had a length of 56685640, but we only support messages up to 52428800 bytes long.

[#1]

I use CDH 6.3.2 but got the error;because I have set --unlock_unsafe_flags=true and  --max_cell_size_bytes=209715200

[#2]

@cl99, Welcome to our community! To help you get the best possible answer, I have tagged in our Impala experts @ChethanYM @willx @SVB @mszurap  who may be able to assist you further.

Please feel free to provide any additional information or details about your query, and we hope that you will find a satisfactory solution to your question.

[#3]

Hi @cl99 , yes, seems there is a 50 MB limit for the max rpc message size in the CDH 6.3.2 version.

https://github.com/apache/impala/blob/branch-3.2.0/be/src/kudu/rpc/transfer.cc#L39 

This error is likely the result of the unsafe flag you have turned on.

Best regards

 Miklos

[#4]

I have set --rpc_max_message_size=134217728 and restart the service，but I got the error again;I find the parameter has been changed to --rpc_max_message_size=134217728