/** An FSDataset has a directory where it loads its data files. */
public FSDataset(DataStorage storage, Configuration conf) throws IOException {
this.maxBlocksPerDir = conf.getInt("dfs.datanode.numblocks", 64);
FSVolume[] volArray = new FSVolume[storage.getNumStorageDirs()];
for (int idx = 0; idx < storage.getNumStorageDirs(); idx++) {
volArray[idx] = new FSVolume(storage.getStorageDir(idx).getCurrentDir(), conf);
}
volumes = new FSVolumeSet(volArray);
volumeMap = new HashMap<Block, DatanodeBlockInfo>();
volumes.getVolumeMap(volumeMap);
registerMBean(storage.getStorageID());
}
