public final void testHashInnerJoin() throws IOException, PlanningException {
Expr expr = analyzer.parse(QUERIES[0]);
LogicalNode plan = planner.createPlan(expr).getRootBlock().getRoot();
JoinNode joinNode = PlannerUtil.findTopNode(plan, NodeType.JOIN);
Enforcer enforcer = new Enforcer();
enforcer.enforceJoinAlgorithm(joinNode.getPID(), JoinAlgorithm.IN_MEMORY_HASH_JOIN);
Fragment[] empFrags = StorageManager.splitNG(conf, "e", employee.getMeta(), employee.getPath(), Integer.MAX_VALUE);
Fragment[] peopleFrags = StorageManager.splitNG(conf, "p", people.getMeta(), people.getPath(), Integer.MAX_VALUE);
Fragment[] merged = TUtil.concat(empFrags, peopleFrags);