Examples with Storage org.apache.hadoop.hdfs.server.common.Storage used on opensource projects

Example 1 with Storage

use of org.apache.hadoop.hdfs.server.common.Storage in project hadoop by apache.

the class TestDataNodeHotSwapVolumes method testAddVolumeFailures.

@Test
public void testAddVolumeFailures() throws IOException {
    startDFSCluster(1, 1);
    final String dataDir = cluster.getDataDirectory();
    DataNode dn = cluster.getDataNodes().get(0);
    List<String> newDirs = Lists.newArrayList();
    final int NUM_NEW_DIRS = 4;
    for (int i = 0; i < NUM_NEW_DIRS; i++) {
        File newVolume = new File(dataDir, "new_vol" + i);
        newDirs.add(newVolume.toString());
        if (i % 2 == 0) {
            // Make addVolume() fail.
            newVolume.createNewFile();
        }
    }
    String newValue = dn.getConf().get(DFS_DATANODE_DATA_DIR_KEY) + "," + Joiner.on(",").join(newDirs);
    try {
        dn.reconfigurePropertyImpl(DFS_DATANODE_DATA_DIR_KEY, newValue);
        fail("Expect to throw IOException.");
    } catch (ReconfigurationException e) {
        String errorMessage = e.getCause().getMessage();
        String[] messages = errorMessage.split("\\r?\\n");
        assertEquals(2, messages.length);
        assertThat(messages[0], containsString("new_vol0"));
        assertThat(messages[1], containsString("new_vol2"));
    }
    // Make sure that vol0 and vol2's metadata are not left in memory.
    FsDatasetSpi<?> dataset = dn.getFSDataset();
    try (FsDatasetSpi.FsVolumeReferences volumes = dataset.getFsVolumeReferences()) {
        for (FsVolumeSpi volume : volumes) {
            assertThat(new File(volume.getStorageLocation().getUri()).toString(), is(not(anyOf(is(newDirs.get(0)), is(newDirs.get(2))))));
        }
    }
    DataStorage storage = dn.getStorage();
    for (int i = 0; i < storage.getNumStorageDirs(); i++) {
        Storage.StorageDirectory sd = storage.getStorageDir(i);
        assertThat(sd.getRoot().toString(), is(not(anyOf(is(newDirs.get(0)), is(newDirs.get(2))))));
    }
    // The newly effective conf does not have vol0 and vol2.
    String[] effectiveVolumes = dn.getConf().get(DFS_DATANODE_DATA_DIR_KEY).split(",");
    assertEquals(4, effectiveVolumes.length);
    for (String ev : effectiveVolumes) {
        assertThat(new File(StorageLocation.parse(ev).getUri()).getCanonicalPath(), is(not(anyOf(is(newDirs.get(0)), is(newDirs.get(2))))));
    }
}

Example 2 with Storage

use of org.apache.hadoop.hdfs.server.common.Storage in project hadoop by apache.

the class TestDataStorage method checkDir.

/** Check whether the root is a valid BlockPoolSlice storage. */
private static void checkDir(File root, String bpid) {
    Storage.StorageDirectory sd = new Storage.StorageDirectory(root);
    File bpRoot = new File(sd.getCurrentDir(), bpid);
    Storage.StorageDirectory bpSd = new Storage.StorageDirectory(bpRoot);
    assertTrue(bpSd.getRoot().isDirectory());
    assertTrue(bpSd.getCurrentDir().isDirectory());
    assertTrue(bpSd.getVersionFile().isFile());
}

Example 3 with Storage

use of org.apache.hadoop.hdfs.server.common.Storage in project hadoop by apache.

the class TestDataStorage method testMissingVersion.

@Test
public void testMissingVersion() throws IOException, URISyntaxException {
    final int numLocations = 1;
    final int numNamespace = 1;
    List<StorageLocation> locations = createStorageLocations(numLocations);
    StorageLocation firstStorage = locations.get(0);
    Storage.StorageDirectory sd = new Storage.StorageDirectory(firstStorage);
    // the directory is not initialized so VERSION does not exist
    // create a fake directory under current/
    File currentDir = new File(sd.getCurrentDir(), "BP-787466439-172.26.24.43-1462305406642");
    assertTrue("unable to mkdir " + currentDir.getName(), currentDir.mkdirs());
    // Add volumes for multiple namespaces.
    List<NamespaceInfo> namespaceInfos = createNamespaceInfos(numNamespace);
    for (NamespaceInfo ni : namespaceInfos) {
        storage.addStorageLocations(mockDN, ni, locations, START_OPT);
    }
    // It should not format the directory because VERSION is missing.
    assertTrue("Storage directory was formatted", currentDir.exists());
}

Example 4 with Storage

use of org.apache.hadoop.hdfs.server.common.Storage in project hadoop by apache.

the class TestDataNodeVolumeFailure method testFailedVolumeBeingRemovedFromDataNode.

/**
   * Test that DataStorage and BlockPoolSliceStorage remove the failed volume
   * after failure.
   */
@Test(timeout = 150000)
public void testFailedVolumeBeingRemovedFromDataNode() throws Exception {
    // The test uses DataNodeTestUtils#injectDataDirFailure() to simulate
    // volume failures which is currently not supported on Windows.
    assumeNotWindows();
    Path file1 = new Path("/test1");
    DFSTestUtil.createFile(fs, file1, 1024, (short) 2, 1L);
    DFSTestUtil.waitReplication(fs, file1, (short) 2);
    File dn0Vol1 = new File(dataDir, "data" + (2 * 0 + 1));
    DataNodeTestUtils.injectDataDirFailure(dn0Vol1);
    DataNode dn0 = cluster.getDataNodes().get(0);
    DataNodeTestUtils.waitForDiskError(dn0, DataNodeTestUtils.getVolume(dn0, dn0Vol1));
    // Verify dn0Vol1 has been completely removed from DN0.
    // 1. dn0Vol1 is removed from DataStorage.
    DataStorage storage = dn0.getStorage();
    assertEquals(1, storage.getNumStorageDirs());
    for (int i = 0; i < storage.getNumStorageDirs(); i++) {
        Storage.StorageDirectory sd = storage.getStorageDir(i);
        assertFalse(sd.getRoot().getAbsolutePath().startsWith(dn0Vol1.getAbsolutePath()));
    }
    final String bpid = cluster.getNamesystem().getBlockPoolId();
    BlockPoolSliceStorage bpsStorage = storage.getBPStorage(bpid);
    assertEquals(1, bpsStorage.getNumStorageDirs());
    for (int i = 0; i < bpsStorage.getNumStorageDirs(); i++) {
        Storage.StorageDirectory sd = bpsStorage.getStorageDir(i);
        assertFalse(sd.getRoot().getAbsolutePath().startsWith(dn0Vol1.getAbsolutePath()));
    }
    // 2. dn0Vol1 is removed from FsDataset
    FsDatasetSpi<? extends FsVolumeSpi> data = dn0.getFSDataset();
    try (FsDatasetSpi.FsVolumeReferences vols = data.getFsVolumeReferences()) {
        for (FsVolumeSpi volume : vols) {
            assertFalse(new File(volume.getStorageLocation().getUri()).getAbsolutePath().startsWith(dn0Vol1.getAbsolutePath()));
        }
    }
    // 3. all blocks on dn0Vol1 have been removed.
    for (ReplicaInfo replica : FsDatasetTestUtil.getReplicas(data, bpid)) {
        assertNotNull(replica.getVolume());
        assertFalse(new File(replica.getVolume().getStorageLocation().getUri()).getAbsolutePath().startsWith(dn0Vol1.getAbsolutePath()));
    }
    // 4. dn0Vol1 is not in DN0's configuration and dataDirs anymore.
    String[] dataDirStrs = dn0.getConf().get(DFSConfigKeys.DFS_DATANODE_DATA_DIR_KEY).split(",");
    assertEquals(1, dataDirStrs.length);
    assertFalse(dataDirStrs[0].contains(dn0Vol1.getAbsolutePath()));
}

Example 5 with Storage

use of org.apache.hadoop.hdfs.server.common.Storage in project hadoop by apache.

the class FsDatasetImpl method getInitialVolumeFailureInfos.

/**
   * Gets initial volume failure information for all volumes that failed
   * immediately at startup.  The method works by determining the set difference
   * between all configured storage locations and the actual storage locations in
   * use after attempting to put all of them into service.
   *
   * @return each storage location that has failed
   */
private static List<VolumeFailureInfo> getInitialVolumeFailureInfos(Collection<StorageLocation> dataLocations, DataStorage storage) {
    Set<StorageLocation> failedLocationSet = Sets.newHashSetWithExpectedSize(dataLocations.size());
    for (StorageLocation sl : dataLocations) {
        failedLocationSet.add(sl);
    }
    for (Iterator<Storage.StorageDirectory> it = storage.dirIterator(); it.hasNext(); ) {
        Storage.StorageDirectory sd = it.next();
        failedLocationSet.remove(sd.getStorageLocation());
    }
    List<VolumeFailureInfo> volumeFailureInfos = Lists.newArrayListWithCapacity(failedLocationSet.size());
    long failureDate = Time.now();
    for (StorageLocation failedStorageLocation : failedLocationSet) {
        volumeFailureInfos.add(new VolumeFailureInfo(failedStorageLocation, failureDate));
    }
    return volumeFailureInfos;
}