本文整理汇总了Java中org.apache.hadoop.hdfs.server.namenode.INode.getParent方法的典型用法代码示例。如果您正苦于以下问题：Java INode.getParent方法的具体用法？Java INode.getParent怎么用？Java INode.getParent使用的例子？那么, 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.INode的用法示例。
在下文中一共展示了INode.getParent方法的2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: findLatestSnapshot
import org.apache.hadoop.hdfs.server.namenode.INode; //导入方法依赖的package包/类
/**
* Find the latest snapshot that 1) covers the given inode (which means the
* snapshot was either taken on the inode or taken on an ancestor of the
* inode), and 2) was taken before the given snapshot (if the given snapshot
* is not null).
*
* @param inode the given inode that the returned snapshot needs to cover
* @param anchor the returned snapshot should be taken before this given id.
* @return id of the latest snapshot that covers the given inode and was taken
* before the the given snapshot (if it is not null).
*/
public static int findLatestSnapshot(INode inode, final int anchor) {
int latest = NO_SNAPSHOT_ID;
for(; inode != null; inode = inode.getParent()) {
if (inode.isDirectory()) {
final INodeDirectory dir = inode.asDirectory();
if (dir.isWithSnapshot()) {
latest = dir.getDiffs().updatePrior(anchor, latest);
}
}
}
return latest;
}
示例2: findRenameTargetPath
import org.apache.hadoop.hdfs.server.namenode.INode; //导入方法依赖的package包/类
/**
* We just found a deleted WithName node as the source of a rename operation.
* However, we should include it in our snapshot diff report as rename only
* if the rename target is also under the same snapshottable directory.
*/
private byte[][] findRenameTargetPath(final INodeDirectory snapshotRoot,
INodeReference.WithName wn, final int snapshotId) {
INode inode = wn.getReferredINode();
final LinkedList<byte[]> ancestors = Lists.newLinkedList();
while (inode != null) {
if (inode == snapshotRoot) {
return ancestors.toArray(new byte[ancestors.size()][]);
}
if (inode instanceof INodeReference.WithCount) {
inode = ((WithCount) inode).getParentRef(snapshotId);
} else {
INode parent = inode.getParentReference() != null ? inode
.getParentReference() : inode.getParent();
if (parent != null && parent instanceof INodeDirectory) {
int sid = parent.asDirectory().searchChild(inode);
if (sid < snapshotId) {
return null;
}
}
if (!(parent instanceof WithCount)) {
ancestors.addFirst(inode.getLocalNameBytes());
}
inode = parent;
}
}
return null;
}