I use sparksql jdbc to load data from SQL Server that include 0.000000 [decimal(28,12)], and then save DataFrame into MongoDB, I find

{"Position" : NumberDecimal("0E-12")}

is saved in MongoDB. When I load these data from MongoDB to DataFrame to show, the exception Decimal scale (12) cannot be greater than precision (1).; is thrown. If I manually update the document into

{"Position" : NumberDecimal("0")}

, it works fine. Is it a bug? Could you tell me how to fix it?