Github user twneale commented on the pull request:
https://github.com/apache/spark/pull/5173#issuecomment-113541699
Looks like this is originating from the socket module
https://github.com/python/cpython/blob/master/Lib/socket.py. the .makefile
method only allows r w and b modes, probably in both 2.x and 3.x. I wonder
if that particular socket is usually a UNIX socket, but falls back to tcp
on windows. Rilut does your spark installation work with python 2.7?
On Fri, Jun 19, 2015, 3:34 AM rilut <[email protected]> wrote:
> I'm on Python 3.4.3 (Anaconda 2.2.0 64-bit, Windows 10 x64) and
> experiencing a problem.
>
> >>> sc.parallelize([1, 2]).count()
> ....
> File "C:\Anaconda3\lib\socket.py", line 205, in makefile
> raise ValueError("invalid mode %r (only r, w, b allowed)" % (mode,))
> ValueError: invalid mode 'a+' (only r, w, b allowed)
> 15/06/19 14:10:54 WARN PythonRDD: Incomplete task interrupted: Attempting
to kill Python Worker
> ....
>
> I think it's because of
> https://github.com/apache/spark/blob/master/python/pyspark/worker.py#L149
> .
> I'm not sure if a+ mode exists in Python 3.
>
> >>> import socket
> >>> sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
> >>> sock.connect(("127.0.0.1", 4040))
> >>> sock_file = sock.makefile("a+", 65536) ## failed
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> File "C:\Anaconda3\lib\socket.py", line 205, in makefile
> raise ValueError("invalid mode %r (only r, w, b allowed)" % (mode,))
> ValueError: invalid mode 'a+' (only r, w, b allowed)
> >>> sock_file = sock.makefile("r", 65536) ## r is okay
> >>> sock_file = sock.makefile("x", 65536) ## x is obviously doesn't
exists, I'm making this up.
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> File "C:\Anaconda3\lib\socket.py", line 205, in makefile
> raise ValueError("invalid mode %r (only r, w, b allowed)" % (mode,))
> ValueError: invalid mode 'x' (only r, w, b allowed)
>
> â
> Reply to this email directly or view it on GitHub
> <https://github.com/apache/spark/pull/5173#issuecomment-113410652>.
>
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