retval = sh.executeLine("exec spawn localhost foo");
assertEquals(0, retval);
assertEquals(1, flumeMaster.getSpecMan().getLogicalNodeMap().size());
retval = sh.executeLine("getmappings");
assertEquals(0, retval);
retval = sh.executeLine("exec spawn localhost bar");
assertEquals(0, retval);
assertEquals(2, flumeMaster.getSpecMan().getLogicalNodeMap().size());