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From "Tom White (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-901) Make S3FileSystem do recursive renames
Date Thu, 18 Jan 2007 09:58:29 GMT
Make S3FileSystem do recursive renames
--------------------------------------

                 Key: HADOOP-901
                 URL: https://issues.apache.org/jira/browse/HADOOP-901
             Project: Hadoop
          Issue Type: Bug
          Components: fs
    Affects Versions: 0.10.1
            Reporter: Tom White


>From Mike Smith:

I went through the S3FileSystem.java codes and fixed the renameRaw() method.
Now, it iterates through the folders recursively and rename those. Also, in
the case of existing destination folder, it moves the src folder under the
dst folder.

Here is the piece code that should be replaced in S3FileSystem.java.
renameRaw() method should be replaced by the following methods:


@Override
 public boolean renameRaw(Path src, Path dst) throws IOException {

  Path absoluteDst = makeAbsolute(dst);
  Path absoluteSrc = makeAbsolute(src);

  INode inode = store.getINode(absoluteDst);
  // checking to see of dst folder exist. In this case moves the
  // src folder under the existing path.
  if (inode != null && inode.isDirectory()) {
   Path newDst = new Path(absoluteDst.toString
()+"/"+absoluteSrc.getName());
   return renameRaw(src,newDst,src);
  } else {
  // if the dst folder does not exist, then the dst folder will be created.

  return renameRaw(src,dst,src);
  }
 }

 // recursively goes through all the subfolders and rename those.
 public boolean renameRaw(Path src, Path dst,Path orgSrc) throws
IOException {
    Path absoluteSrc = makeAbsolute(src);
    Path newDst = new Path(src.toString().replaceFirst(orgSrc.toString(),
dst.toString()));
    Path absoluteDst = makeAbsolute(newDst);
    LOG.info(absoluteSrc.toString());
    INode inode = store.getINode (absoluteSrc);
    if (inode == null) {
      return false;
    }
    if (inode.isFile()) {
     store.storeINode(makeAbsolute(absoluteDst), inode);
    } else {
      store.storeINode (makeAbsolute(absoluteDst), inode);
      Path[] contents = listPathsRaw(absoluteSrc);
      if (contents == null) {
        return false;
      }
      for (Path p : contents) {
        if (! renameRaw(p,dst,orgSrc)) {
          return false;
        }

      }
    }
    store.deleteINode(absoluteSrc);
    return true;
}

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