Passing Joins to Hadoop

The SAS/ACCESS engine does not pass LIBNAME-referenced cross-schema joins to Hadoop. To pass a multiple-libref join to Hadoop, the schemas for each LIBNAME statement must be identical. You can use the SQL pass-through facility to pass a cross-schema join to Hadoop.
For more information about when and how SAS/ACCESS passes joins to the DBMS, see Passing Joins to the DBMS.