Hi all, Previously, we discussed some issues with alterConfigs here on the mailing list, and eventually came to the conclusion that the RPC as implemented can't be used for a shell command modifying configurations.
I wrote up a small KIP to fix the issues with the RPC. Please take a look at https://cwiki.apache.org/confluence/display/KAFKA/KIP-339%3A+Create+a+new+ModifyConfigs+API best, Colin
