Datasource schema 1000 character limit

When adding a schema to a MongoDB Datasource (so i can use it with a Virtual Datasource) it gives me the following message :

Failed to save data source.
The reason is: Could not execute JDBC batch update: ERROR: value too long for type character varying(1000)

The full response from the server is: {"message":"Could not execute JDBC batch update: ERROR: value too long for type character varying(1000)","errorCode":"illegal.parameter.value.error"}

When i limit my schema it can be saved, but the schema is incomplete (and therefore not useable)

My schema will contain more then 1000 chars, can this limit be removed?

Is it a bug, or can i configure it somewhere?