public static List<URI> getDataNodeStorageDirs() {
Configuration conf = new HdfsConfiguration();
Collection<String> dirNames = conf.getTrimmedStringCollection(DFS_DATANODE_DATA_DIR_KEY);
return Util.stringCollectionAsURIs(dirNames);
}
private static Collection<String> getJtServiceIds(Configuration conf, String logicalName) {
return conf.getTrimmedStringCollection(MR_HA_JOBTRACKERS_KEY_PREFIX + "." + logicalName);
}