QueryId qid1 = LocalTajoTestingUtility.newQueryId();
QueryId qid2 = TajoIdUtils.parseQueryId(qid1.toString());
assertEquals(qid1, qid2);
MasterPlan plan1 = new MasterPlan(qid1, null, null);
ExecutionBlockId sub1 = plan1.newExecutionBlockId();
ExecutionBlockId sub2 = TajoIdUtils.createExecutionBlockId(sub1.toString());
assertEquals(sub1, sub2);
QueryUnitId u1 = QueryIdFactory.newQueryUnitId(sub1);
QueryUnitId u2 = new QueryUnitId(u1.getProto());