Java Code Examples for org.apache.hadoop.hdfs.server.namenode.INodeDirectory#getDirectorySnapshottableFeature()

The following examples show how to use org.apache.hadoop.hdfs.server.namenode.INodeDirectory#getDirectorySnapshottableFeature() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: SnapshotManager.java    From hadoop with Apache License 2.0 6 votes vote down vote up 
/**
 * Set the given snapshottable directory to non-snapshottable.
 * 
 * @throws SnapshotException if there are snapshots in the directory.
 */
public void resetSnapshottable(final String path) throws IOException {
  final INodesInPath iip = fsdir.getINodesInPath4Write(path);
  final INodeDirectory d = INodeDirectory.valueOf(iip.getLastINode(), path);
  DirectorySnapshottableFeature sf = d.getDirectorySnapshottableFeature();
  if (sf == null) {
    // the directory is already non-snapshottable
    return;
  }
  if (sf.getNumSnapshots() > 0) {
    throw new SnapshotException("The directory " + path + " has snapshot(s). "
        + "Please redo the operation after removing all the snapshots.");
  }

  if (d == fsdir.getRoot()) {
    d.setSnapshotQuota(0);
  } else {
    d.removeSnapshottableFeature();
  }
  removeSnapshottable(d);
}
Example 2
Source File: SnapshotFSImageFormat.java    From hadoop with Apache License 2.0 6 votes vote down vote up 
/**
 * Load snapshots and snapshotQuota for a Snapshottable directory.
 *
 * @param snapshottableParent
 *          The snapshottable directory for loading.
 * @param numSnapshots
 *          The number of snapshots that the directory has.
 * @param loader
 *          The loader
 */
public static void loadSnapshotList(INodeDirectory snapshottableParent,
    int numSnapshots, DataInput in, FSImageFormat.Loader loader)
    throws IOException {
  DirectorySnapshottableFeature sf = snapshottableParent
      .getDirectorySnapshottableFeature();
  Preconditions.checkArgument(sf != null);
  for (int i = 0; i < numSnapshots; i++) {
    // read snapshots
    final Snapshot s = loader.getSnapshot(in);
    s.getRoot().setParent(snapshottableParent);
    sf.addSnapshot(s);
  }
  int snapshotQuota = in.readInt();
  snapshottableParent.setSnapshotQuota(snapshotQuota);
}
Example 3
Source File: SnapshotManager.java    From big-c with Apache License 2.0 6 votes vote down vote up 
/**
 * Set the given snapshottable directory to non-snapshottable.
 * 
 * @throws SnapshotException if there are snapshots in the directory.
 */
public void resetSnapshottable(final String path) throws IOException {
  final INodesInPath iip = fsdir.getINodesInPath4Write(path);
  final INodeDirectory d = INodeDirectory.valueOf(iip.getLastINode(), path);
  DirectorySnapshottableFeature sf = d.getDirectorySnapshottableFeature();
  if (sf == null) {
    // the directory is already non-snapshottable
    return;
  }
  if (sf.getNumSnapshots() > 0) {
    throw new SnapshotException("The directory " + path + " has snapshot(s). "
        + "Please redo the operation after removing all the snapshots.");
  }

  if (d == fsdir.getRoot()) {
    d.setSnapshotQuota(0);
  } else {
    d.removeSnapshottableFeature();
  }
  removeSnapshottable(d);
}
Example 4
Source File: SnapshotFSImageFormat.java    From big-c with Apache License 2.0 6 votes vote down vote up 
/**
 * Load snapshots and snapshotQuota for a Snapshottable directory.
 *
 * @param snapshottableParent
 *          The snapshottable directory for loading.
 * @param numSnapshots
 *          The number of snapshots that the directory has.
 * @param loader
 *          The loader
 */
public static void loadSnapshotList(INodeDirectory snapshottableParent,
    int numSnapshots, DataInput in, FSImageFormat.Loader loader)
    throws IOException {
  DirectorySnapshottableFeature sf = snapshottableParent
      .getDirectorySnapshottableFeature();
  Preconditions.checkArgument(sf != null);
  for (int i = 0; i < numSnapshots; i++) {
    // read snapshots
    final Snapshot s = loader.getSnapshot(in);
    s.getRoot().setParent(snapshottableParent);
    sf.addSnapshot(s);
  }
  int snapshotQuota = in.readInt();
  snapshottableParent.setSnapshotQuota(snapshotQuota);
}
Example 5
Source File: SnapshotFSImageFormat.java    From hadoop with Apache License 2.0 5 votes vote down vote up 
/**
 * Save snapshots and snapshot quota for a snapshottable directory.
 * @param current The directory that the snapshots belongs to.
 * @param out The {@link DataOutput} to write.
 * @throws IOException
 */
public static void saveSnapshots(INodeDirectory current, DataOutput out)
    throws IOException {
  DirectorySnapshottableFeature sf = current.getDirectorySnapshottableFeature();
  Preconditions.checkArgument(sf != null);
  // list of snapshots in snapshotsByNames
  ReadOnlyList<Snapshot> snapshots = sf.getSnapshotList();
  out.writeInt(snapshots.size());
  for (Snapshot s : snapshots) {
    // write the snapshot id
    out.writeInt(s.getId());
  }
  // snapshot quota
  out.writeInt(sf.getSnapshotQuota());
}
Example 6
Source File: SnapshotFSImageFormat.java    From big-c with Apache License 2.0 5 votes vote down vote up 
/**
 * Save snapshots and snapshot quota for a snapshottable directory.
 * @param current The directory that the snapshots belongs to.
 * @param out The {@link DataOutput} to write.
 * @throws IOException
 */
public static void saveSnapshots(INodeDirectory current, DataOutput out)
    throws IOException {
  DirectorySnapshottableFeature sf = current.getDirectorySnapshottableFeature();
  Preconditions.checkArgument(sf != null);
  // list of snapshots in snapshotsByNames
  ReadOnlyList<Snapshot> snapshots = sf.getSnapshotList();
  out.writeInt(snapshots.size());
  for (Snapshot s : snapshots) {
    // write the snapshot id
    out.writeInt(s.getId());
  }
  // snapshot quota
  out.writeInt(sf.getSnapshotQuota());
}