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From omalley <...@git.apache.org>
Subject [GitHub] orc issue #132: ORC-202. Add writer implementation enum to file format
Date Tue, 20 Jun 2017 06:05:58 GMT
Github user omalley commented on the issue:

    There are a couple of problems with enums in Protobuf... The main is that if it is an
unknown value (from a future version) it becomes unset. It is important that we can tell the
difference between an unset value (orc java writer) and some future writer implementation.
It is also useful to be able to print the value of the unknown enum.
    Obviously I wasn't aware of the problems when I wrote the original version of orc_proto.proto.
I probably should go through and convert them all to integers.

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