void clearPath(File f) { dataDir.clearPath(f); }
void getVolumeMap(HashMap<Block, DatanodeBlockInfo> volumeMap) { dataDir.getVolumeMap(volumeMap, this); }
void checkDirs() throws DiskErrorException { dataDir.checkDirTree(); DiskChecker.checkDir(tmpDir); }
void getBlockInfo(TreeSet<Block> blockSet) { dataDir.getBlockInfo(blockSet); }
File addBlock(Block b, File f) throws IOException { File blockFile = dataDir.addBlock(b, f); File metaFile = getMetaFile(blockFile, b); dfsUsage.incDfsUsed(b.getNumBytes() + metaFile.length()); return blockFile; }