// 在数据节点上创建块池的物理目录
static void makeBlockPoolDataDir(Collection<File> dataDirs, Configuration conf)
throws IOException {
if (conf == null) conf = new HdfsConfiguration();
LocalFileSystem localFS = FileSystem.getLocal(conf);
FsPermission permission =
new FsPermission(
conf.get(
DFSConfigKeys.DFS_DATANODE_DATA_DIR_PERMISSION_KEY,
DFSConfigKeys.DFS_DATANODE_DATA_DIR_PERMISSION_DEFAULT));
for (File data : dataDirs) {
try {
DiskChecker.checkDir(localFS, new Path(data.toURI()), permission);
} catch (IOException e) {
LOG.warn("Invalid directory in: " + data.getCanonicalPath() + ": " + e.getMessage());
}
}
}
void checkDirs() throws DiskErrorException {
DiskChecker.checkDirs(finalizedDir);
DiskChecker.checkDir(tmpDir);
DiskChecker.checkDir(rbwDir);
}