本文整理汇总了Java中org.apache.hadoop.hdfs.server.namenode.snapshot.Snapshot.Root方法的典型用法代码示例。如果您正苦于以下问题：Java Snapshot.Root方法的具体用法？Java Snapshot.Root怎么用？Java Snapshot.Root使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.apache.hadoop.hdfs.server.namenode.snapshot.Snapshot的用法示例。
在下文中一共展示了Snapshot.Root方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: getSnapshotsListing
import org.apache.hadoop.hdfs.server.namenode.snapshot.Snapshot; //导入方法依赖的package包/类
/**
* Get a listing of all the snapshots of a snapshottable directory
*/
private static DirectoryListing getSnapshotsListing(
FSDirectory fsd, String src, byte[] startAfter)
throws IOException {
Preconditions.checkState(fsd.hasReadLock());
Preconditions.checkArgument(
src.endsWith(HdfsConstants.SEPARATOR_DOT_SNAPSHOT_DIR),
"%s does not end with %s", src, HdfsConstants.SEPARATOR_DOT_SNAPSHOT_DIR);
final String dirPath = FSDirectory.normalizePath(src.substring(0,
src.length() - HdfsConstants.DOT_SNAPSHOT_DIR.length()));
final INode node = fsd.getINode(dirPath);
final INodeDirectory dirNode = INodeDirectory.valueOf(node, dirPath);
final DirectorySnapshottableFeature sf = dirNode.getDirectorySnapshottableFeature();
if (sf == null) {
throw new SnapshotException(
"Directory is not a snapshottable directory: " + dirPath);
}
final ReadOnlyList<Snapshot> snapshots = sf.getSnapshotList();
int skipSize = ReadOnlyList.Util.binarySearch(snapshots, startAfter);
skipSize = skipSize < 0 ? -skipSize - 1 : skipSize + 1;
int numOfListing = Math.min(snapshots.size() - skipSize, fsd.getLsLimit());
final HdfsFileStatus listing[] = new HdfsFileStatus[numOfListing];
for (int i = 0; i < numOfListing; i++) {
Snapshot.Root sRoot = snapshots.get(i + skipSize).getRoot();
listing[i] = createFileStatus(fsd, src, sRoot.getLocalNameBytes(), sRoot,
BlockStoragePolicySuite.ID_UNSPECIFIED, Snapshot.CURRENT_STATE_ID,
false, INodesInPath.fromINode(sRoot));
}
return new DirectoryListing(
listing, snapshots.size() - skipSize - numOfListing);
}
示例2: getSnapshotsListing
import org.apache.hadoop.hdfs.server.namenode.snapshot.Snapshot; //导入方法依赖的package包/类
/**
* Get a listing of all the snapshots of a snapshottable directory
*/
private static DirectoryListing getSnapshotsListing(
FSDirectory fsd, String src, byte[] startAfter)
throws IOException {
Preconditions.checkState(fsd.hasReadLock());
Preconditions.checkArgument(
src.endsWith(HdfsConstants.SEPARATOR_DOT_SNAPSHOT_DIR),
"%s does not end with %s", src, HdfsConstants.SEPARATOR_DOT_SNAPSHOT_DIR);
final String dirPath = FSDirectory.normalizePath(src.substring(0,
src.length() - HdfsConstants.DOT_SNAPSHOT_DIR.length()));
final INode node = fsd.getINode(dirPath);
final INodeDirectory dirNode = INodeDirectory.valueOf(node, dirPath);
final DirectorySnapshottableFeature sf = dirNode.getDirectorySnapshottableFeature();
if (sf == null) {
throw new SnapshotException(
"Directory is not a snapshottable directory: " + dirPath);
}
final ReadOnlyList<Snapshot> snapshots = sf.getSnapshotList();
int skipSize = ReadOnlyList.Util.binarySearch(snapshots, startAfter);
skipSize = skipSize < 0 ? -skipSize - 1 : skipSize + 1;
int numOfListing = Math.min(snapshots.size() - skipSize, fsd.getLsLimit());
final HdfsFileStatus listing[] = new HdfsFileStatus[numOfListing];
for (int i = 0; i < numOfListing; i++) {
Snapshot.Root sRoot = snapshots.get(i + skipSize).getRoot();
INodeAttributes nodeAttrs = getINodeAttributes(
fsd, src, sRoot.getLocalNameBytes(),
node, Snapshot.CURRENT_STATE_ID);
listing[i] = createFileStatus(
fsd, sRoot.getLocalNameBytes(),
sRoot, nodeAttrs,
HdfsConstants.BLOCK_STORAGE_POLICY_ID_UNSPECIFIED,
Snapshot.CURRENT_STATE_ID, false,
INodesInPath.fromINode(sRoot));
}
return new DirectoryListing(
listing, snapshots.size() - skipSize - numOfListing);
}
示例3: dumpTreeRecursively
import org.apache.hadoop.hdfs.server.namenode.snapshot.Snapshot; //导入方法依赖的package包/类
@VisibleForTesting
@Override
public void dumpTreeRecursively(PrintWriter out, StringBuilder prefix,
final int snapshot) {
super.dumpTreeRecursively(out, prefix, snapshot);
out.print(", childrenSize=" + getChildrenList(snapshot).size());
final DirectoryWithQuotaFeature q = getDirectoryWithQuotaFeature();
if (q != null) {
out.print(", " + q);
}
if (this instanceof Snapshot.Root) {
out.print(", snapshotId=" + snapshot);
}
out.println();
if (prefix.length() >= 2) {
prefix.setLength(prefix.length() - 2);
prefix.append(" ");
}
dumpTreeRecursively(out, prefix, new Iterable<SnapshotAndINode>() {
final Iterator<INode> i = getChildrenList(snapshot).iterator();
@Override
public Iterator<SnapshotAndINode> iterator() {
return new Iterator<SnapshotAndINode>() {
@Override
public boolean hasNext() {
return i.hasNext();
}
@Override
public SnapshotAndINode next() {
return new SnapshotAndINode(snapshot, i.next());
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
};
}
});
final DirectorySnapshottableFeature s = getDirectorySnapshottableFeature();
if (s != null) {
s.dumpTreeRecursively(this, out, prefix, snapshot);
}
}