Hello Naveen, It seems that your type (Customer) have a reference to a type which cannot be mapped to SQL data type.
public class Customer { private SomeDataType field; ... } Unfortunately, JDBC thin driver does not support such compound objects. The list of data types available in Apache Ignite can be found here: https://apacheignite-sql.readme.io/docs/data-types Thanks! -- Sent from: http://apache-ignite-users.70518.x6.nabble.com/