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

Examples of org.apache.hadoop.hdfs.server.namenode.INodeReference$WithName

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    // 4. /dir2/foo -> /dir1/foo, /dir2/bar -> /dir1/bar
    hdfs.rename(foo_dir2, foo_dir1);
    hdfs.rename(bar2_dir2, bar2_dir1);
   
    // check the internal details
    INodeReference fooRef = fsdir.getINode4Write(foo_dir1.toString())
        .asReference();
    INodeReference.WithCount fooWithCount = (WithCount) fooRef
        .getReferredINode();
    // only 2 references: one in deleted list of sdir1, one in created list of
    // sdir1
    assertEquals(2, fooWithCount.getReferenceCount());
    INodeDirectory foo = fooWithCount.asDirectory();
    assertEquals(1, foo.getDiffs().asList().size());
    INodeDirectorySnapshottable sdir1Node =
        (INodeDirectorySnapshottable) fsdir.getINode(sdir1.toString());
    Snapshot s1 = sdir1Node.getSnapshot(DFSUtil.string2Bytes("s1"));
    assertEquals(s1.getId(), foo.getDirectoryWithSnapshotFeature()
        .getLastSnapshotId());
    INodeFile bar1 = fsdir.getINode4Write(bar1_dir1.toString()).asFile();
    assertEquals(1, bar1.getDiffs().asList().size());
    assertEquals(s1.getId(), bar1.getDiffs().getLastSnapshotId());
   
    INodeReference barRef = fsdir.getINode4Write(bar2_dir1.toString())
        .asReference();
    INodeReference.WithCount barWithCount = (WithCount) barRef
        .getReferredINode();
    assertEquals(2, barWithCount.getReferenceCount());
    INodeFile bar = barWithCount.asFile();
    assertEquals(1, bar.getDiffs().asList().size());
    assertEquals(s1.getId(), bar.getDiffs().getLastSnapshotId());
   
    // restart the cluster and check fsimage
    restartClusterAndCheckImage(true);
   
    // delete foo
    hdfs.delete(foo_dir1, true);
    hdfs.delete(bar2_dir1, true);
   
    // restart the cluster and check fsimage
    restartClusterAndCheckImage(true);
   
    // check
    assertTrue(hdfs.exists(bar1_s1));
    assertTrue(hdfs.exists(bar2_s1));
    assertFalse(hdfs.exists(bar1_s2));
    assertFalse(hdfs.exists(bar2_s2));
    assertFalse(hdfs.exists(bar1_s3));
    assertFalse(hdfs.exists(bar2_s3));
    assertFalse(hdfs.exists(foo_dir1));
    assertFalse(hdfs.exists(bar1_dir1));
    assertFalse(hdfs.exists(bar2_dir1));
    statusBar1 = hdfs.getFileStatus(bar1_s1);
    assertEquals(REPL, statusBar1.getReplication());
    statusBar2 = hdfs.getFileStatus(bar2_s1);
    assertEquals(REPL, statusBar2.getReplication());
   
    final Path foo_s1 = SnapshotTestHelper.getSnapshotPath(sdir1, "s1", "foo");
    fooRef = fsdir.getINode(foo_s1.toString()).asReference();
    fooWithCount = (WithCount) fooRef.getReferredINode();
    assertEquals(1, fooWithCount.getReferenceCount());
   
    barRef = fsdir.getINode(bar2_s1.toString()).asReference();
    barWithCount = (WithCount) barRef.getReferredINode();
    assertEquals(1, barWithCount.getReferenceCount());
  }
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    INodeDirectorySnapshottable sdir2Node =
        (INodeDirectorySnapshottable) fsdir.getINode(sdir2.toString());
    INodeDirectorySnapshottable sdir3Node =
        (INodeDirectorySnapshottable) fsdir.getINode(sdir3.toString());
   
    INodeReference fooRef = fsdir.getINode4Write(foo_dir1.toString())
        .asReference();
    INodeReference.WithCount fooWithCount = (WithCount) fooRef.getReferredINode();
    // 5 references: s1, s22, s333, s2222, current tree of sdir1
    assertEquals(5, fooWithCount.getReferenceCount());
    INodeDirectory foo = fooWithCount.asDirectory();
    List<DirectoryDiff> fooDiffs = foo.getDiffs().asList();
    assertEquals(4, fooDiffs.size());
   
    Snapshot s2222 = sdir2Node.getSnapshot(DFSUtil.string2Bytes("s2222"));
    Snapshot s333 = sdir3Node.getSnapshot(DFSUtil.string2Bytes("s333"));
    Snapshot s22 = sdir2Node.getSnapshot(DFSUtil.string2Bytes("s22"));
    Snapshot s1 = sdir1Node.getSnapshot(DFSUtil.string2Bytes("s1"));
   
    assertEquals(s2222.getId(), fooDiffs.get(3).getSnapshotId());
    assertEquals(s333.getId(), fooDiffs.get(2).getSnapshotId());
    assertEquals(s22.getId(), fooDiffs.get(1).getSnapshotId());
    assertEquals(s1.getId(), fooDiffs.get(0).getSnapshotId());
    INodeFile bar1 = fsdir.getINode4Write(bar1_dir1.toString()).asFile();
    List<FileDiff> bar1Diffs = bar1.getDiffs().asList();
    assertEquals(3, bar1Diffs.size());
    assertEquals(s333.getId(), bar1Diffs.get(2).getSnapshotId());
    assertEquals(s22.getId(), bar1Diffs.get(1).getSnapshotId());
    assertEquals(s1.getId(), bar1Diffs.get(0).getSnapshotId());
   
    INodeReference barRef = fsdir.getINode4Write(bar_dir1.toString())
        .asReference();
    INodeReference.WithCount barWithCount = (WithCount) barRef.getReferredINode();
    // 5 references: s1, s22, s333, s2222, current tree of sdir1
    assertEquals(5, barWithCount.getReferenceCount());
    INodeFile bar = barWithCount.asFile();
    List<FileDiff> barDiffs = bar.getDiffs().asList();
    assertEquals(4, barDiffs.size());
    assertEquals(s2222.getId(), barDiffs.get(3).getSnapshotId());
    assertEquals(s333.getId(), barDiffs.get(2).getSnapshotId());
    assertEquals(s22.getId(), barDiffs.get(1).getSnapshotId());
    assertEquals(s1.getId(), barDiffs.get(0).getSnapshotId());
   
    // restart the cluster and check fsimage
    restartClusterAndCheckImage(true);
   
    // delete foo
    hdfs.delete(foo_dir1, true);
    hdfs.delete(bar_dir1, true);
   
    // restart the cluster and check fsimage
    restartClusterAndCheckImage(true);
   
    // check
    final Path bar1_s1111 = SnapshotTestHelper.getSnapshotPath(sdir1, "s1111",
        "foo/bar1");
    final Path bar_s1111 = SnapshotTestHelper.getSnapshotPath(sdir1, "s1111",
        "bar");
    assertTrue(hdfs.exists(bar1_s1));
    assertTrue(hdfs.exists(bar1_s22));
    assertTrue(hdfs.exists(bar1_s333));
    assertTrue(hdfs.exists(bar1_s2222));
    assertFalse(hdfs.exists(bar1_s1111));
    assertTrue(hdfs.exists(bar_s1));
    assertTrue(hdfs.exists(bar_s22));
    assertTrue(hdfs.exists(bar_s333));
    assertTrue(hdfs.exists(bar_s2222));
    assertFalse(hdfs.exists(bar_s1111));
   
    final Path foo_s2222 = SnapshotTestHelper.getSnapshotPath(sdir2, "s2222",
        "foo");
    fooRef = fsdir.getINode(foo_s2222.toString()).asReference();
    fooWithCount = (WithCount) fooRef.getReferredINode();
    assertEquals(4, fooWithCount.getReferenceCount());
    foo = fooWithCount.asDirectory();
    fooDiffs = foo.getDiffs().asList();
    assertEquals(4, fooDiffs.size());
    assertEquals(s2222.getId(), fooDiffs.get(3).getSnapshotId());
    bar1Diffs = bar1.getDiffs().asList();
    assertEquals(3, bar1Diffs.size());
    assertEquals(s333.getId(), bar1Diffs.get(2).getSnapshotId());
   
    barRef = fsdir.getINode(bar_s2222.toString()).asReference();
    barWithCount = (WithCount) barRef.getReferredINode();
    assertEquals(4, barWithCount.getReferenceCount());
    bar = barWithCount.asFile();
    barDiffs = bar.getDiffs().asList();
    assertEquals(4, barDiffs.size());
    assertEquals(s2222.getId(), barDiffs.get(3).getSnapshotId());
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    // check internal details
    INodeDirectorySnapshottable sdir2Node =
        (INodeDirectorySnapshottable) fsdir.getINode(sdir2.toString());
    Snapshot s2 = sdir2Node.getSnapshot(DFSUtil.string2Bytes("s2"));
    final Path foo_s2 = SnapshotTestHelper.getSnapshotPath(sdir2, "s2", "foo");
    INodeReference fooRef = fsdir.getINode(foo_s2.toString()).asReference();
    assertTrue(fooRef instanceof INodeReference.WithName);
    INodeReference.WithCount fooWC = (WithCount) fooRef.getReferredINode();
    assertEquals(1, fooWC.getReferenceCount());
    INodeDirectory fooDir = fooWC.getReferredINode().asDirectory();
    List<DirectoryDiff> diffs = fooDir.getDiffs().asList();
    assertEquals(1, diffs.size());
    assertEquals(s2.getId(), diffs.get(0).getSnapshotId());
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        INodeReferenceSection.INodeReference e = INodeReferenceSection
            .INodeReference.parseDelimitedFrom(in);
        if (e == null) {
          break;
        }
        INodeReference ref = loadINodeReference(e);
        refList.add(ref);
      }
    }
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      INode referred = fsDir.getInode(referredId);
      WithCount withCount = (WithCount) referred.getParentReference();
      if (withCount == null) {
        withCount = new INodeReference.WithCount(null, referred);
      }
      final INodeReference ref;
      if (r.hasDstSnapshotId()) { // DstReference
        ref = new INodeReference.DstReference(null, withCount,
            r.getDstSnapshotId());
      } else {
        ref = new INodeReference.WithName(null, withCount, r.getName()
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        dlist.add(deleted);
        addToDeletedList(deleted, dir);
      }
      // load reference nodes in the deleted list
      for (int refId : deletedRefNodes) {
        INodeReference deletedRef = refList.get(refId);
        dlist.add(deletedRef);
        addToDeletedList(deletedRef, dir);
      }

      Collections.sort(dlist, new Comparator<INode>() {
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    // 4. /dir2/foo -> /dir1/foo, /dir2/bar -> /dir1/bar
    hdfs.rename(foo_dir2, foo_dir1);
    hdfs.rename(bar2_dir2, bar2_dir1);
   
    // check the internal details
    INodeReference fooRef = fsdir.getINode4Write(foo_dir1.toString())
        .asReference();
    INodeReference.WithCount fooWithCount = (WithCount) fooRef
        .getReferredINode();
    // only 2 references: one in deleted list of sdir1, one in created list of
    // sdir1
    assertEquals(2, fooWithCount.getReferenceCount());
    INodeDirectoryWithSnapshot foo = (INodeDirectoryWithSnapshot) fooWithCount
        .asDirectory();
    assertEquals(1, foo.getDiffs().asList().size());
    assertEquals("s1", foo.getLastSnapshot().getRoot().getLocalName());
    INodeFileWithSnapshot bar1 = (INodeFileWithSnapshot) fsdir.getINode4Write(
        bar1_dir1.toString()).asFile();
    assertEquals(1, bar1.getDiffs().asList().size());
    assertEquals("s1", bar1.getDiffs().getLastSnapshot().getRoot()
        .getLocalName());
   
    INodeReference barRef = fsdir.getINode4Write(bar2_dir1.toString())
        .asReference();
    INodeReference.WithCount barWithCount = (WithCount) barRef
        .getReferredINode();
    assertEquals(2, barWithCount.getReferenceCount());
    INodeFileWithSnapshot bar = (INodeFileWithSnapshot) barWithCount.asFile();
    assertEquals(1, bar.getDiffs().asList().size());
    assertEquals("s1", bar.getDiffs().getLastSnapshot().getRoot()
        .getLocalName());
   
    // restart the cluster and check fsimage
    restartClusterAndCheckImage(true);
   
    // delete foo
    hdfs.delete(foo_dir1, true);
    hdfs.delete(bar2_dir1, true);
   
    // restart the cluster and check fsimage
    restartClusterAndCheckImage(true);
   
    // check
    assertTrue(hdfs.exists(bar1_s1));
    assertTrue(hdfs.exists(bar2_s1));
    assertFalse(hdfs.exists(bar1_s2));
    assertFalse(hdfs.exists(bar2_s2));
    assertFalse(hdfs.exists(bar1_s3));
    assertFalse(hdfs.exists(bar2_s3));
    assertFalse(hdfs.exists(foo_dir1));
    assertFalse(hdfs.exists(bar1_dir1));
    assertFalse(hdfs.exists(bar2_dir1));
    statusBar1 = hdfs.getFileStatus(bar1_s1);
    assertEquals(REPL, statusBar1.getReplication());
    statusBar2 = hdfs.getFileStatus(bar2_s1);
    assertEquals(REPL, statusBar2.getReplication());
   
    final Path foo_s1 = SnapshotTestHelper.getSnapshotPath(sdir1, "s1", "foo");
    fooRef = fsdir.getINode(foo_s1.toString()).asReference();
    fooWithCount = (WithCount) fooRef.getReferredINode();
    assertEquals(1, fooWithCount.getReferenceCount());
   
    barRef = fsdir.getINode(bar2_s1.toString()).asReference();
    barWithCount = (WithCount) barRef.getReferredINode();
    assertEquals(1, barWithCount.getReferenceCount());
  }
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    // 4. /dir2/foo -> /dir1/foo
    hdfs.rename(foo_dir2, foo_dir1);
    hdfs.rename(bar_dir2, bar_dir1);
   
    // check the internal details
    INodeReference fooRef = fsdir.getINode4Write(foo_dir1.toString())
        .asReference();
    INodeReference.WithCount fooWithCount = (WithCount) fooRef.getReferredINode();
    // 5 references: s1, s22, s333, s2222, current tree of sdir1
    assertEquals(5, fooWithCount.getReferenceCount());
    INodeDirectoryWithSnapshot foo = (INodeDirectoryWithSnapshot) fooWithCount
        .asDirectory();
    List<DirectoryDiff> fooDiffs = foo.getDiffs().asList();
    assertEquals(4, fooDiffs.size());
    assertEquals("s2222", fooDiffs.get(3).snapshot.getRoot().getLocalName());
    assertEquals("s333", fooDiffs.get(2).snapshot.getRoot().getLocalName());
    assertEquals("s22", fooDiffs.get(1).snapshot.getRoot().getLocalName());
    assertEquals("s1", fooDiffs.get(0).snapshot.getRoot().getLocalName());
    INodeFileWithSnapshot bar1 = (INodeFileWithSnapshot) fsdir.getINode4Write(
        bar1_dir1.toString()).asFile();
    List<FileDiff> bar1Diffs = bar1.getDiffs().asList();
    assertEquals(3, bar1Diffs.size());
    assertEquals("s333", bar1Diffs.get(2).snapshot.getRoot().getLocalName());
    assertEquals("s22", bar1Diffs.get(1).snapshot.getRoot().getLocalName());
    assertEquals("s1", bar1Diffs.get(0).snapshot.getRoot().getLocalName());
   
    INodeReference barRef = fsdir.getINode4Write(bar_dir1.toString())
        .asReference();
    INodeReference.WithCount barWithCount = (WithCount) barRef.getReferredINode();
    // 5 references: s1, s22, s333, s2222, current tree of sdir1
    assertEquals(5, barWithCount.getReferenceCount());
    INodeFileWithSnapshot bar = (INodeFileWithSnapshot) barWithCount.asFile();
    List<FileDiff> barDiffs = bar.getDiffs().asList();
    assertEquals(4, barDiffs.size());
    assertEquals("s2222", barDiffs.get(3).snapshot.getRoot().getLocalName());
    assertEquals("s333", barDiffs.get(2).snapshot.getRoot().getLocalName());
    assertEquals("s22", barDiffs.get(1).snapshot.getRoot().getLocalName());
    assertEquals("s1", barDiffs.get(0).snapshot.getRoot().getLocalName());
   
    // restart the cluster and check fsimage
    restartClusterAndCheckImage(true);
   
    // delete foo
    hdfs.delete(foo_dir1, true);
    hdfs.delete(bar_dir1, true);
   
    // restart the cluster and check fsimage
    restartClusterAndCheckImage(true);
   
    // check
    final Path bar1_s1111 = SnapshotTestHelper.getSnapshotPath(sdir1, "s1111",
        "foo/bar1");
    final Path bar_s1111 = SnapshotTestHelper.getSnapshotPath(sdir1, "s1111",
        "bar");
    assertTrue(hdfs.exists(bar1_s1));
    assertTrue(hdfs.exists(bar1_s22));
    assertTrue(hdfs.exists(bar1_s333));
    assertTrue(hdfs.exists(bar1_s2222));
    assertFalse(hdfs.exists(bar1_s1111));
    assertTrue(hdfs.exists(bar_s1));
    assertTrue(hdfs.exists(bar_s22));
    assertTrue(hdfs.exists(bar_s333));
    assertTrue(hdfs.exists(bar_s2222));
    assertFalse(hdfs.exists(bar_s1111));
   
    final Path foo_s2222 = SnapshotTestHelper.getSnapshotPath(sdir2, "s2222",
        "foo");
    fooRef = fsdir.getINode(foo_s2222.toString()).asReference();
    fooWithCount = (WithCount) fooRef.getReferredINode();
    assertEquals(4, fooWithCount.getReferenceCount());
    foo = (INodeDirectoryWithSnapshot) fooWithCount.asDirectory();
    fooDiffs = foo.getDiffs().asList();
    assertEquals(4, fooDiffs.size());
    assertEquals("s2222", fooDiffs.get(3).snapshot.getRoot().getLocalName());
    bar1Diffs = bar1.getDiffs().asList();
    assertEquals(3, bar1Diffs.size());
    assertEquals("s333", bar1Diffs.get(2).snapshot.getRoot().getLocalName());
   
    barRef = fsdir.getINode(bar_s2222.toString()).asReference();
    barWithCount = (WithCount) barRef.getReferredINode();
    assertEquals(4, barWithCount.getReferenceCount());
    bar = (INodeFileWithSnapshot) barWithCount.asFile();
    barDiffs = bar.getDiffs().asList();
    assertEquals(4, barDiffs.size());
    assertEquals("s2222", barDiffs.get(3).snapshot.getRoot().getLocalName());
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        "foo/bar");
    assertTrue(hdfs.exists(bar_s2));
   
    // check internal details
    final Path foo_s2 = SnapshotTestHelper.getSnapshotPath(sdir2, "s2", "foo");
    INodeReference fooRef = fsdir.getINode(foo_s2.toString()).asReference();
    assertTrue(fooRef instanceof INodeReference.WithName);
    INodeReference.WithCount fooWC = (WithCount) fooRef.getReferredINode();
    assertEquals(1, fooWC.getReferenceCount());
    INodeDirectoryWithSnapshot fooDir = (INodeDirectoryWithSnapshot) fooWC
        .getReferredINode().asDirectory();
    List<DirectoryDiff> diffs = fooDir.getDiffs().asList();
    assertEquals(1, diffs.size());
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    // 4. /dir2/foo -> /dir1/foo, /dir2/bar -> /dir1/bar
    hdfs.rename(foo_dir2, foo_dir1);
    hdfs.rename(bar2_dir2, bar2_dir1);
   
    // check the internal details
    INodeReference fooRef = fsdir.getINode4Write(foo_dir1.toString())
        .asReference();
    INodeReference.WithCount fooWithCount = (WithCount) fooRef
        .getReferredINode();
    // only 2 references: one in deleted list of sdir1, one in created list of
    // sdir1
    assertEquals(2, fooWithCount.getReferenceCount());
    INodeDirectoryWithSnapshot foo = (INodeDirectoryWithSnapshot) fooWithCount
        .asDirectory();
    assertEquals(1, foo.getDiffs().asList().size());
    assertEquals("s1", foo.getLastSnapshot().getRoot().getLocalName());
    INodeFileWithSnapshot bar1 = (INodeFileWithSnapshot) fsdir.getINode4Write(
        bar1_dir1.toString()).asFile();
    assertEquals(1, bar1.getDiffs().asList().size());
    assertEquals("s1", bar1.getDiffs().getLastSnapshot().getRoot()
        .getLocalName());
   
    INodeReference barRef = fsdir.getINode4Write(bar2_dir1.toString())
        .asReference();
    INodeReference.WithCount barWithCount = (WithCount) barRef
        .getReferredINode();
    assertEquals(2, barWithCount.getReferenceCount());
    INodeFileWithSnapshot bar = (INodeFileWithSnapshot) barWithCount.asFile();
    assertEquals(1, bar.getDiffs().asList().size());
    assertEquals("s1", bar.getDiffs().getLastSnapshot().getRoot()
        .getLocalName());
   
    // restart the cluster and check fsimage
    restartClusterAndCheckImage(true);
   
    // delete foo
    hdfs.delete(foo_dir1, true);
    hdfs.delete(bar2_dir1, true);
   
    // restart the cluster and check fsimage
    restartClusterAndCheckImage(true);
   
    // check
    assertTrue(hdfs.exists(bar1_s1));
    assertTrue(hdfs.exists(bar2_s1));
    assertFalse(hdfs.exists(bar1_s2));
    assertFalse(hdfs.exists(bar2_s2));
    assertFalse(hdfs.exists(bar1_s3));
    assertFalse(hdfs.exists(bar2_s3));
    assertFalse(hdfs.exists(foo_dir1));
    assertFalse(hdfs.exists(bar1_dir1));
    assertFalse(hdfs.exists(bar2_dir1));
    statusBar1 = hdfs.getFileStatus(bar1_s1);
    assertEquals(REPL, statusBar1.getReplication());
    statusBar2 = hdfs.getFileStatus(bar2_s1);
    assertEquals(REPL, statusBar2.getReplication());
   
    final Path foo_s1 = SnapshotTestHelper.getSnapshotPath(sdir1, "s1", "foo");
    fooRef = fsdir.getINode(foo_s1.toString()).asReference();
    fooWithCount = (WithCount) fooRef.getReferredINode();
    assertEquals(1, fooWithCount.getReferenceCount());
   
    barRef = fsdir.getINode(bar2_s1.toString()).asReference();
    barWithCount = (WithCount) barRef.getReferredINode();
    assertEquals(1, barWithCount.getReferenceCount());
  }
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