How to decide number of mappers in sqoop?

How to decide number of mappers in sqoop and hive?

In my opinion, and as Durga expressed, if the size of the data set is large, it should be loaded in more mappers, which would allow them to load faster. When it is a relational database, I think that it would be necessary to look for key indexes that allow us to optimize queries or restrict them to a certain amount of data.