Online Documentation for SQL Manager for SQL server
Creating/editing external data source
Name
Specify the unique name for the data source being created.
Type
Select the type of the data source: HADOOP or BLOB_STORAGE.
Location
Specify connection string for HADOOP or Azure blob storage in the special format.
Credential
Specify the database-scoped credential for authenticating to the external data source.
Resource manager location
Specify the Hadoop resource manager location to improve query performance.
Database
Specify the name of the database that functions as the shard map manager or the remote database.
Shard map manager
Set the name of the shard map.