checkpointPeriod = conf.getLong(DFSConfigKeys.DFS_NAMENODE_CHECKPOINT_PERIOD_KEY,
DFSConfigKeys.DFS_NAMENODE_CHECKPOINT_PERIOD_DEFAULT);
checkpointSize = conf.getLong(DFSConfigKeys.DFS_NAMENODE_CHECKPOINT_SIZE_KEY,
DFSConfigKeys.DFS_NAMENODE_CHECKPOINT_SIZE_DEFAULT);
HttpServer httpServer = backupNode.httpServer;
httpServer.setAttribute("name.system.image", getFSImage());
httpServer.setAttribute("name.conf", conf);
httpServer.addInternalServlet("getimage", "/getimage", GetImageServlet.class);
LOG.info("Checkpoint Period : " + checkpointPeriod + " secs " +
"(" + checkpointPeriod/60 + " min)");
LOG.info("Log Size Trigger : " + checkpointSize + " bytes " +
"(" + checkpointSize/1024 + " KB)");