[GitHub] [incubator-pinot] mayankshriv edited a comment on pull request #7167: Bump up data table version to V4 to optimize space usage.

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mayankshriv edited a comment on pull request #7167:
URL: https://github.com/apache/incubator-pinot/pull/7167#issuecomment-881150485


   > > since presto connector will access pinot server with segment query and wrap up DataTable by itself. Is it possible to make the query itself contain the version of which DataTable protocol to use?
   > > So the Pinot server can work with v3 broker/v4 broker or v2 presto.
   > 
   > @xiangfu0 @mayankshriv
   > We will eventually stop supporting V2 and V3, so it's better to update codebase of presto connector to follow up the most recent pinot. But I do think it a good idea to to allow client specify DataTable version, this will make client happy: client only need make minimal change after pinot is upgraded( by specifying an old DataTable version), this will give client developer more time to upgrade their code. Let's pull @mcvsubbu @siddharthteotia to chime in.
   
   @mqliang We do not own the Presto code. On top of that, there are two of them PrestoDB and Trino. And is being used in production at Uber and City Storage Systems. Also, we are still dealing with the v3 change that was recently made.
   
   FWIW, I think either DataTable should not have been exposed outside of Pinot, or it should have been treated as an external interface that should not be changed in backward incompatible way. But given that we are in the situation, we should probably acknowledge that and avoid making further backward incompatible changes until we resolve the situation across the communities.
   
   Thoughts?


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