himanshug commented on issue #6223: make COMPLEX column filterable in Druid code URL: https://github.com/apache/incubator-druid/pull/6223#issuecomment-415594030 > Would it make sense to add a canFilter method to ColumnCapabilities to have a finer level of control than just mapping filterability directly to ValueType? Actually I think existence of `Filterable.FILTERABLE_TYPE` is redundant. For me, ColumnCapability.hasBitmapIndexes() is already the indication whether column supports filtering or not. So, one thing to do is to remove `Filterable.FILTERABLE_TYPE` altogether and adjust the code in `ColumnSelectorBitmapIndexSelector` to not use that. however, I would like to keep things simple for this PR and not cause any unwanted side effects as above suggestion needs to get tested appropriately.
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