IOError : writetb :Hadoop process returned[255]

[nettyxiong]

when I try to write data to hdfs using "hadoopy.writetb",I got error below:

[sxiong@localhost codes]$ ls
sift.py  test2.py  test.py  uploadFilesAsSequence.py
[sxiong@localhost codes]$ python uploadFilesAsSequence.py 
Traceback (most recent call last):
  File "uploadFilesAsSequence.py", line 65, in <module>
    _write2(img_folder,sequenceHdfsPath)
  File "uploadFilesAsSequence.py", line 30, in _write2
    hadoopy.writetb(hdfs_uri,_read_local_dir(local_path))
  File "/home/sxiong/src/hadoopy/hadoopy/_hdfs.py", line 251, in writetb
    raise IOError('writetb: Hadoop process returned [%d]. Hadoop output below...\nstderr\n%s' % (p.returncode, p.stderr.read()))
IOError: writetb: Hadoop process returned [255]. Hadoop output below...
stderr
Not a valid JAR: /home/sxiong/dockerfiles/spark/codes/loadtb