I agree with Danny. We should believe that uses can handle it well. Best, Chunwei
On Tue, Oct 22, 2019 at 3:26 PM Danny Chan <yuzhao....@gmail.com> wrote: > > I don’t trust the typical Calcite user to be able to write a sub-class > that works correctly and efficiently. > > People who sub-class RelMetadataQuery are almost those who has deep > customization of the calcite-core, for example, the MaxCompute or the > Apache Flink. > > We may assume that it is not that easy to implement a perfect extension > of RelMetadataQuery, but let’s open this chance to them, give them the > freedom to extension, we should have the confidence. > > Best, > Danny Chan > 在 2019年10月22日 +0800 AM9:58，dev@calcite.apache.org，写道： > > > > I don’t trust the typical Calcite user to be able to write a sub-class > that works correctly and efficiently. >
