本文整理汇总了Java中org.apache.hadoop.hdfs.server.namenode.snapshot.Snapshot.generateDefaultSnapshotName方法的典型用法代码示例。如果您正苦于以下问题：Java Snapshot.generateDefaultSnapshotName方法的具体用法？Java Snapshot.generateDefaultSnapshotName怎么用？Java Snapshot.generateDefaultSnapshotName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.generateDefaultSnapshotName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: createSnapshot
import org.apache.hadoop.hdfs.server.namenode.snapshot.Snapshot; //导入方法依赖的package包/类
/**
* Create a snapshot
* @param snapshotRoot The directory path where the snapshot is taken
* @param snapshotName The name of the snapshot
*/
static String createSnapshot(
FSDirectory fsd, SnapshotManager snapshotManager, String snapshotRoot,
String snapshotName, boolean logRetryCache)
throws IOException {
final INodesInPath iip = fsd.getINodesInPath4Write(snapshotRoot);
if (fsd.isPermissionEnabled()) {
FSPermissionChecker pc = fsd.getPermissionChecker();
fsd.checkOwner(pc, iip);
}
if (snapshotName == null || snapshotName.isEmpty()) {
snapshotName = Snapshot.generateDefaultSnapshotName();
} else if (!DFSUtil.isValidNameForComponent(snapshotName)) {
throw new InvalidPathException("Invalid snapshot name: " + snapshotName);
}
String snapshotPath = null;
verifySnapshotName(fsd, snapshotName, snapshotRoot);
fsd.writeLock();
try {
snapshotPath = snapshotManager.createSnapshot(iip, snapshotRoot,
snapshotName);
} finally {
fsd.writeUnlock();
}
fsd.getEditLog().logCreateSnapshot(snapshotRoot, snapshotName,
logRetryCache);
return snapshotPath;
}