Github user StevenMPhillips commented on the pull request:
https://github.com/apache/drill/pull/254#issuecomment-156603625
Yes, that is true, it is able to deserialize based on version, similar to
what we do when deserializing physical plans or storage plugin configurations.
See StoragePluginConfig.java for an example. It uses the @JsonTypeInfo
annotation.
I wasn't sure if some other part of the code needs to know the version
before deserializing.
This was designed to support new versions.
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