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

Examples of org.apache.hadoop.hdfs.server.namenode.INode.asDirectory()

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        .isEmpty());
   
    assertTrue(hdfs.exists(newfoo));
    INode fooRefNode = fsdir.getINode4Write(newfoo.toString());
    assertTrue(fooRefNode instanceof INodeReference.DstReference);
    INodeDirectory fooNode = fooRefNode.asDirectory();
    // fooNode should be still INodeDirectoryWithSnapshot since we call
    // recordModification before the rename
    assertTrue(fooNode instanceof INodeDirectoryWithSnapshot);
    assertTrue(((INodeDirectoryWithSnapshot) fooNode).getDiffs().asList()
        .isEmpty());
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    // check foo and its subtree
    final Path newbar = new Path(newfoo, bar.getName());
    INodeDirectoryWithSnapshot barNode = (INodeDirectoryWithSnapshot) fsdir
        .getINode4Write(newbar.toString());
    assertSame(fooNode.asDirectory(), barNode.getParent());
    // bar should only have a snapshot diff for s0
    List<DirectoryDiff> barDiffList = barNode.getDiffs().asList();
    assertEquals(1, barDiffList.size());
    DirectoryDiff diff = barDiffList.get(0);
    assertEquals("s0", Snapshot.getSnapshotName(diff.snapshot));
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          && topNode.asFile() instanceof FileWithSnapshot) {
        FileWithSnapshot fs = (FileWithSnapshot) topNode.asFile();
        counts.add(fs.getDiffs().deleteSnapshotDiff(post, prior,
            topNode.asFile(), collectedBlocks, removedINodes, countDiffChange));
      } else if (topNode.isDirectory()) {
        INodeDirectory dir = topNode.asDirectory();
        ChildrenDiff priorChildrenDiff = null;
        if (dir instanceof INodeDirectoryWithSnapshot) {
          // delete files/dirs created after prior. Note that these
          // files/dirs, along with inode, were deleted right after post.
          INodeDirectoryWithSnapshot sdir = (INodeDirectoryWithSnapshot) dir;
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  static Snapshot read(DataInput in, FSImageFormat.Loader loader)
      throws IOException {
    final int snapshotId = in.readInt();
    final INode root = loader.loadINodeWithLocalName(false, in, false);
    return new Snapshot(snapshotId, root.asDirectory(), null);
  }

  /** The root directory of the snapshot. */
  static public class Root extends INodeDirectory {
    Root(INodeDirectory other) {
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    assertFalse(hdfs.exists(foo_s2));
   
    INode fooNode = fsdir.getINode4Write(foo_dir2.toString());
    assertTrue(childrenDiff.getList(ListType.CREATED).get(0) == fooNode);
    assertTrue(fooNode instanceof INodeReference.DstReference);
    List<DirectoryDiff> fooDiffs = ((INodeDirectoryWithSnapshot) fooNode
        .asDirectory()).getDiffs().asList();
    assertEquals(1, fooDiffs.size());
    assertEquals("s1", fooDiffs.get(0).snapshot.getRoot().getLocalName());
   
    // create snapshot on sdir2 and rename again
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    final Path foo_s3 = SnapshotTestHelper.getSnapshotPath(sdir2, "s3", "foo2");
    assertFalse(hdfs.exists(foo_s2));
    assertTrue(hdfs.exists(foo_s3));
   
    assertTrue(fooNode instanceof INodeReference.DstReference);
    fooDiffs = ((INodeDirectoryWithSnapshot) fooNode.asDirectory()).getDiffs()
        .asList();
    assertEquals(2, fooDiffs.size());
    assertEquals("s1", fooDiffs.get(0).snapshot.getRoot().getLocalName());
    assertEquals("s3", fooDiffs.get(1).snapshot.getRoot().getLocalName());
  }
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    INode dir2Node = fsdir.getINode4Write(dir2.toString());
    assertTrue(dir2Node.getClass() == INodeDirectorySnapshottable.class);
    Quota.Counts counts = dir2Node.computeQuotaUsage();
    assertEquals(3, counts.get(Quota.NAMESPACE));
    assertEquals(0, counts.get(Quota.DISKSPACE));
    childrenList = ReadOnlyList.Util.asList(dir2Node.asDirectory()
        .getChildrenList(null));
    assertEquals(1, childrenList.size());
    INode subdir2Node = childrenList.get(0);
    assertSame(dir2Node, subdir2Node.getParent());
    assertSame(subdir2Node, fsdir.getINode4Write(subdir2.toString()));
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    INode dir2Node = fsdir.getINode4Write(dir2.toString());
    assertTrue(dir2Node.getClass() == INodeDirectorySnapshottable.class);
    Quota.Counts counts = dir2Node.computeQuotaUsage();
    assertEquals(4, counts.get(Quota.NAMESPACE));
    assertEquals(0, counts.get(Quota.DISKSPACE));
    childrenList = ReadOnlyList.Util.asList(dir2Node.asDirectory()
        .getChildrenList(null));
    assertEquals(1, childrenList.size());
    INode subdir2Node = childrenList.get(0);
    assertTrue(subdir2Node.getClass() == INodeDirectoryWithSnapshot.class);
    assertSame(dir2Node, subdir2Node.getParent());
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        .isEmpty());
   
    assertTrue(hdfs.exists(newfoo));
    INode fooRefNode = fsdir.getINode4Write(newfoo.toString());
    assertTrue(fooRefNode instanceof INodeReference.DstReference);
    INodeDirectory fooNode = fooRefNode.asDirectory();
    // fooNode should be still INodeDirectoryWithSnapshot since we call
    // recordModification before the rename
    assertTrue(fooNode instanceof INodeDirectoryWithSnapshot);
    assertTrue(((INodeDirectoryWithSnapshot) fooNode).getDiffs().asList()
        .isEmpty());
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    // check foo and its subtree
    final Path newbar = new Path(newfoo, bar.getName());
    INodeDirectoryWithSnapshot barNode = (INodeDirectoryWithSnapshot) fsdir
        .getINode4Write(newbar.toString());
    assertSame(fooNode.asDirectory(), barNode.getParent());
    // bar should only have a snapshot diff for s0
    List<DirectoryDiff> barDiffList = barNode.getDiffs().asList();
    assertEquals(1, barDiffList.size());
    DirectoryDiff diff = barDiffList.get(0);
    assertEquals("s0", Snapshot.getSnapshotName(diff.snapshot));
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