本文整理汇总了Java中org.apache.hadoop.hdfs.server.namenode.INodeDirectory.getDirectorySnapshottableFeature方法的典型用法代码示例。如果您正苦于以下问题：Java INodeDirectory.getDirectorySnapshottableFeature方法的具体用法？Java INodeDirectory.getDirectorySnapshottableFeature怎么用？Java INodeDirectory.getDirectorySnapshottableFeature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.INodeDirectory的用法示例。
在下文中一共展示了INodeDirectory.getDirectorySnapshottableFeature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: resetSnapshottable
import org.apache.hadoop.hdfs.server.namenode.INodeDirectory; //导入方法依赖的package包/类
/**
* 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);
}
示例2: loadSnapshotList
import org.apache.hadoop.hdfs.server.namenode.INodeDirectory; //导入方法依赖的package包/类
/**
* 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);
}
示例3: saveSnapshots
import org.apache.hadoop.hdfs.server.namenode.INodeDirectory; //导入方法依赖的package包/类
/**
* 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());
}