The actual storage datatype for that column is stored in ColumnPage level. In previous implementation, columns with literal datatype 'float' and 'double' shared the same storage datatype 'double' and you want to distinguish them by adding support for storage datatype 'float'.
Is my understanding right? If it is so, there will no compatible problems. But we'd better to mention that for old store prior than 1.5.0, user can only use double. -- Sent from: http://apache-carbondata-dev-mailing-list-archive.1130556.n5.nabble.com/
