本文整理汇总了Java中org.apache.hadoop.hdfs.server.namenode.INodeDirectory.setLocalName方法的典型用法代码示例。如果您正苦于以下问题：Java INodeDirectory.setLocalName方法的具体用法？Java INodeDirectory.setLocalName怎么用？Java INodeDirectory.setLocalName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.setLocalName方法的1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: renameSnapshot
import org.apache.hadoop.hdfs.server.namenode.INodeDirectory; //导入方法依赖的package包/类
/**
* Rename a snapshot
* @param path
* The directory path where the snapshot was taken. Used for
* generating exception message.
* @param oldName
* Old name of the snapshot
* @param newName
* New name the snapshot will be renamed to
* @throws SnapshotException
* Throw SnapshotException when either the snapshot with the old
* name does not exist or a snapshot with the new name already
* exists
*/
public void renameSnapshot(String path, String oldName, String newName)
throws SnapshotException {
if (newName.equals(oldName)) {
return;
}
final int indexOfOld = searchSnapshot(DFSUtil.string2Bytes(oldName));
if (indexOfOld < 0) {
throw new SnapshotException("The snapshot " + oldName
+ " does not exist for directory " + path);
} else {
final byte[] newNameBytes = DFSUtil.string2Bytes(newName);
int indexOfNew = searchSnapshot(newNameBytes);
if (indexOfNew >= 0) {
throw new SnapshotException("The snapshot " + newName
+ " already exists for directory " + path);
}
// remove the one with old name from snapshotsByNames
Snapshot snapshot = snapshotsByNames.remove(indexOfOld);
final INodeDirectory ssRoot = snapshot.getRoot();
ssRoot.setLocalName(newNameBytes);
indexOfNew = -indexOfNew - 1;
if (indexOfNew <= indexOfOld) {
snapshotsByNames.add(indexOfNew, snapshot);
} else { // indexOfNew > indexOfOld
snapshotsByNames.add(indexOfNew - 1, snapshot);
}
}
}