I need open and save image using hadoop and python, i'm tried two way to do
this:
1. Using WholeFileInputFormat.class
for infile in sys.stdin:
data = str(infile)
data = StringIO.StringIO(data).getvalue()
image = Image.frombuffer("RGB", (128,128), str(data), "raw","RGB",0,1)
image = image.convert('L')
print '%s\t' % (data)
ERROR
File "/usr/lib/python2.5/site-packages/PIL/Image.py", line 576, in
fromstring
raise ValueError("not enough image data")
ValueError: not enough image data
2.
for infile in sys.stdin:
pathIn = os.getenv('map_input_file')
image = Image.open(pathIn)
ERROR
IOError: [Errno 2] No such file or directory:
'hdfs://localhost:8022/user/training/input/img10.jpg'
This dir exist....!
train...@training-vm:~$ hadoop fs -lsr /user/training/input/
-rw-r--r-- 1 training supergroup 1556016 2010-01-13 08:22
/user/training/input/img10.jpg
Can you help me, what i do wrong??, I'm using hadoop 0.20.1, python and PIL
