FsVolumeList { @Override public String toString() { return volumes.toString(); } FsVolumeList(List<VolumeFailureInfo> initialVolumeFailureInfos,
      BlockScanner blockScanner,
      VolumeChoosingPolicy<FsVolumeImpl> blockChooser); @Override String toString();  }
@Test public void testDfsReservedForDifferentStorageTypes() throws IOException { Configuration conf = new Configuration(); conf.setLong(DFSConfigKeys.DFS_DATANODE_DU_RESERVED_KEY, 100L); File volDir = new File(baseDir, "volume-0"); volDir.mkdirs(); FsVolumeImpl volume = new FsVolumeImplBuilder().setDataset(dataset) .setStorageDirectory( new StorageDirectory( StorageLocation.parse("[RAM_DISK]"+volDir.getPath()))) .setStorageID("storage-id") .setConf(conf) .build(); assertEquals("", 100L, volume.getReserved()); conf.setLong( DFSConfigKeys.DFS_DATANODE_DU_RESERVED_KEY + "." + StringUtils.toLowerCase(StorageType.RAM_DISK.toString()), 1L); conf.setLong( DFSConfigKeys.DFS_DATANODE_DU_RESERVED_KEY + "." + StringUtils.toLowerCase(StorageType.SSD.toString()), 2L); conf.setLong( DFSConfigKeys.DFS_DATANODE_DU_RESERVED_KEY + "." + StringUtils.toLowerCase(StorageType.NVDIMM.toString()), 3L); FsVolumeImpl volume1 = new FsVolumeImplBuilder().setDataset(dataset) .setStorageDirectory( new StorageDirectory( StorageLocation.parse("[RAM_DISK]"+volDir.getPath()))) .setStorageID("storage-id") .setConf(conf) .build(); assertEquals("", 1L, volume1.getReserved()); FsVolumeImpl volume2 = new FsVolumeImplBuilder().setDataset(dataset) .setStorageDirectory( new StorageDirectory( StorageLocation.parse("[SSD]"+volDir.getPath()))) .setStorageID("storage-id") .setConf(conf) .build(); assertEquals("", 2L, volume2.getReserved()); FsVolumeImpl volume3 = new FsVolumeImplBuilder().setDataset(dataset) .setStorageDirectory( new StorageDirectory( StorageLocation.parse("[DISK]"+volDir.getPath()))) .setStorageID("storage-id") .setConf(conf) .build(); assertEquals("", 100L, volume3.getReserved()); FsVolumeImpl volume4 = new FsVolumeImplBuilder().setDataset(dataset) .setStorageDirectory( new StorageDirectory( StorageLocation.parse(volDir.getPath()))) .setStorageID("storage-id") .setConf(conf) .build(); assertEquals("", 100L, volume4.getReserved()); FsVolumeImpl volume5 = new FsVolumeImplBuilder().setDataset(dataset) .setStorageDirectory( new StorageDirectory( StorageLocation.parse("[NVDIMM]"+volDir.getPath()))) .setStorageID("storage-id") .setConf(conf) .build(); assertEquals(3L, volume5.getReserved()); }