Github user xhochy commented on the issue:
https://github.com/apache/drill/pull/649
No, this patch is actually functioning as the data port is already included
in the probuf:
https://github.com/apache/drill/blob/master/protocol/src/main/protobuf/Coordination.proto#L11
The `+1 logic` is only used in the initialization code for the port.
Also I did a test run with 5 drillbits and random dataports assigned to
them. They each were able to talk to them showing that the correct ports are
communicated.
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