if(startOpt == StartupOption.IMPORT) {
// In case of IMPORT this will get rid of default directories
// but will retain directories specified in hdfs-site.xml
// When importing image from a checkpoint, the name-node can
// start with empty set of storage directories.
Configuration cE = new HdfsConfiguration(false);
cE.addResource("core-default.xml");
cE.addResource("core-site.xml");
cE.addResource("hdfs-default.xml");
Collection<String> dirNames2 = cE.getTrimmedStringCollection(propertyName);
dirNames.removeAll(dirNames2);
if(dirNames.isEmpty())
LOG.warn("!!! WARNING !!!" +
"\n\tThe NameNode currently runs without persistent storage." +
"\n\tAny changes to the file system meta-data may be lost." +