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Java INodeDirectory.isWithSnapshot方法代码示例

本文整理汇总了Java中org.apache.hadoop.hdfs.server.namenode.INodeDirectory.isWithSnapshot方法的典型用法代码示例。如果您正苦于以下问题:Java INodeDirectory.isWithSnapshot方法的具体用法?Java INodeDirectory.isWithSnapshot怎么用?Java INodeDirectory.isWithSnapshot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org.apache.hadoop.hdfs.server.namenode.INodeDirectory的用法示例。


在下文中一共展示了INodeDirectory.isWithSnapshot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.INodeDirectory; //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;
}
 
开发者ID:naver,项目名称:hadoop,代码行数:24,代码来源:Snapshot.java

示例2: loadDirectoryDiffList

import org.apache.hadoop.hdfs.server.namenode.INodeDirectory; //导入方法依赖的package包/类
/**
 * Load the {@link SnapshotDiff} list for the INodeDirectoryWithSnapshot
 * directory.
 *
 * @param dir
 *          The snapshottable directory for loading.
 * @param in
 *          The {@link DataInput} instance to read.
 * @param loader
 *          The loader
 */
public static void loadDirectoryDiffList(INodeDirectory dir,
    DataInput in, FSImageFormat.Loader loader) throws IOException {
  final int size = in.readInt();
  if (dir.isWithSnapshot()) {
    DirectoryDiffList diffs = dir.getDiffs();
    for (int i = 0; i < size; i++) {
      diffs.addFirst(loadDirectoryDiff(dir, in, loader));
    }
  }
}
 
开发者ID:naver,项目名称:hadoop,代码行数:22,代码来源:SnapshotFSImageFormat.java


注:本文中的org.apache.hadoop.hdfs.server.namenode.INodeDirectory.isWithSnapshot方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。