I am a newer of druid, and i am convinced whether dimension type can be Array[Byte]. It can only be String?
Druid only supports String dimensions currently; there are some PRs in-review that work towards adding support for long/float dimensions as well, but I’m not aware of any plans for supporting byte arrays presently.
thanks Jon for the quick answer
在 2016年12月1日星期四 UTC+8上午6:38:34，Jonathan Wei写道：