Package org.apache.hadoop.hdfs.server.namenode.snapshot

Examples of org.apache.hadoop.hdfs.server.namenode.snapshot.Snapshot$Root

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   *            reference nodes;
   *         >0 otherwise.
   */
  private long removeLastINode(final INodesInPath iip)
      throws QuotaExceededException {
    final Snapshot latestSnapshot = iip.getLatestSnapshot();
    final INode last = iip.getLastINode();
    final INodeDirectory parent = iip.getINode(-2).asDirectory();
    if (!parent.removeChild(last, latestSnapshot, inodeMap)) {
      return -1;
    }
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      }
      if (dsQuota == HdfsConstants.QUOTA_DONT_SET) {
        dsQuota = oldDsQuota;
      }       

      final Snapshot latest = iip.getLatestSnapshot();
      if (dirNode instanceof INodeDirectoryWithQuota) {
        INodeDirectoryWithQuota quotaNode = (INodeDirectoryWithQuota) dirNode;
        Quota.Counts counts = null;
        if (!quotaNode.isQuotaSet()) {
          // dirNode must be an INodeDirectoryWithSnapshot whose quota has not
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    INode[] inodes = nodesInPath.getINodes();
    // Length of inodes should be (components.length - 1), since we will ignore
    // ".snapshot"
    assertEquals(inodes.length, components.length - 1);
    // SnapshotRootIndex should be 3: {root, Testsnapshot, sub1, s1, file1}
    final Snapshot snapshot = getSnapshot(nodesInPath, "s1");
    assertSnapshot(nodesInPath, true, snapshot, 3);
    // Check the INode for file1 (snapshot file)
    INode snapshotFileNode = inodes[inodes.length - 1];
    assertINodeFile(snapshotFileNode, file1);
    assertTrue(snapshotFileNode.getParent() instanceof
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    hdfs.createSnapshot(sub1, "s2");
   
    // Delete the original file /TestSnapshot/sub1/file1
    hdfs.delete(file1, false);
   
    final Snapshot snapshot;
    {
      // Resolve the path for the snapshot file
      // /TestSnapshot/sub1/.snapshot/s2/file1
      String snapshotPath = sub1.toString() + "/.snapshot/s2/file1";
      String[] names = INode.getPathNames(snapshotPath);
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    INodesInPath ssNodesInPath = INodesInPath.resolve(fsdir.rootDir, components);
    INode[] ssInodes = ssNodesInPath.getINodes();
    // Length of ssInodes should be (components.length - 1), since we will
    // ignore ".snapshot"
    assertEquals(ssInodes.length, components.length - 1);
    final Snapshot s3 = getSnapshot(ssNodesInPath, "s3");
    assertSnapshot(ssNodesInPath, true, s3, 3);
    // Check the INode for snapshot of file1
    INode snapshotFileNode = ssInodes[ssInodes.length - 1];
    assertEquals(snapshotFileNode.getLocalName(), file1.getName());
    assertTrue(snapshotFileNode instanceof INodeFileWithSnapshot);
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          + ", resolveLink=" + resolveLink);
    }
    // check if (parentAccess != null) && file exists, then check sb
    // If resolveLink, the check is performed on the link target.
    final INodesInPath inodesInPath = root.getINodesInPath(path, resolveLink);
    final Snapshot snapshot = inodesInPath.getPathSnapshot();
    final INode[] inodes = inodesInPath.getINodes();
    int ancestorIndex = inodes.length - 2;
    for(; ancestorIndex >= 0 && inodes[ancestorIndex] == null;
        ancestorIndex--);
    checkTraverse(inodes, ancestorIndex, snapshot);
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    assertTrue("The children list of root should be empty",
        rootNode.getChildrenList(Snapshot.CURRENT_STATE_ID).isEmpty());
    // one snapshot on root: s1
    List<DirectoryDiff> diffList = rootNode.getDiffs().asList();
    assertEquals(1, diffList.size());
    Snapshot s1 = rootNode.getSnapshot(DFSUtil.string2Bytes("s1"));
    assertEquals(s1.getId(), diffList.get(0).getSnapshotId());
   
    // check SnapshotManager's snapshottable directory list
    assertEquals(1, fsn.getSnapshotManager().getNumSnapshottableDirs());
    SnapshottableDirectoryStatus[] sdirs = fsn.getSnapshotManager()
        .getSnapshottableDirListing(null);
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    INode[] inodes = nodesInPath.getINodes();
    // Length of inodes should be (components.length - 1), since we will ignore
    // ".snapshot"
    assertEquals(inodes.length, components.length - 1);
    // SnapshotRootIndex should be 3: {root, Testsnapshot, sub1, s1, file1}
    final Snapshot snapshot = getSnapshot(nodesInPath, "s1");
    assertSnapshot(nodesInPath, true, snapshot, 3);
    // Check the INode for file1 (snapshot file)
    INode snapshotFileNode = inodes[inodes.length - 1];
    assertINodeFile(snapshotFileNode, file1);
    assertTrue(snapshotFileNode.getParent().isWithSnapshot());
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    hdfs.createSnapshot(sub1, "s2");
   
    // Delete the original file /TestSnapshot/sub1/file1
    hdfs.delete(file1, false);
   
    final Snapshot snapshot;
    {
      // Resolve the path for the snapshot file
      // /TestSnapshot/sub1/.snapshot/s2/file1
      String snapshotPath = sub1.toString() + "/.snapshot/s2/file1";
      String[] names = INode.getPathNames(snapshotPath);
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    INodesInPath ssNodesInPath = INodesInPath.resolve(fsdir.rootDir, components);
    INode[] ssInodes = ssNodesInPath.getINodes();
    // Length of ssInodes should be (components.length - 1), since we will
    // ignore ".snapshot"
    assertEquals(ssInodes.length, components.length - 1);
    final Snapshot s3 = getSnapshot(ssNodesInPath, "s3");
    assertSnapshot(ssNodesInPath, true, s3, 3);
    // Check the INode for snapshot of file1
    INode snapshotFileNode = ssInodes[ssInodes.length - 1];
    assertEquals(snapshotFileNode.getLocalName(), file1.getName());
    assertTrue(snapshotFileNode.asFile().isWithSnapshot());
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