set hive.optimize.ppd=true;

EXPLAIN
 FROM 
  src a
 LEFT OUTER JOIN 
  src b 
 ON (a.key = b.key)
 SELECT a.key, a.value, b.key, b.value
 WHERE a.key > 10 AND a.key < 20 AND b.key > 15 AND b.key < 25;

 FROM 
  src a
 LEFT OUTER JOIN 
  src b 
 ON (a.key = b.key)
 SELECT a.key, a.value, b.key, b.value
 WHERE a.key > 10 AND a.key < 20 AND b.key > 15 AND b.key < 25;