Github user sohami commented on a diff in the pull request: https://github.com/apache/drill/pull/578#discussion_r94849762 --- Diff: protocol/src/main/protobuf/User.proto --- @@ -111,6 +115,21 @@ message BitToUserHandshake { optional string errorId = 4; optional string errorMessage = 5; optional RpcEndpointInfos server_infos = 6; + repeated string authenticationMechanisms = 7; --- End diff -- shouldn't this be optional ? I am not sure when new server builds this message and send back to older client then how this field is ignored on client side without being optional.
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