Status: New
Owner: ----
Labels: Type-Defect Priority-Medium
New issue 384 by [email protected]: memcached refuse to recv data if the
client send too much data without recving
https://code.google.com/p/memcached/issues/detail?id=384
(I’m not sure whether it is a bug or a feature.)
### What steps will reproduce the problem?
1. start a memcached server on port 11211
2. download the snippet:
https://gist.github.com/mckelvin/6aaf1d14e7866719a9bc and make sure
python(2) is available
3. python memcached_reproduce.py
### What is the expected output? What do you see instead?
The reproduce code is expected to exit 0. If the bug occurs, the python
process should be idle and never times out.
### What version of the product are you using? On what operating system?
CANNOT be reproduced on version 1.4.5(Gentoo), 1.4.13(Ubuntu), 1.4.15(OS X),
CAN be reproduced on version 1.4.17(Gentoo), 1.4.20(OS X).
Not all of the versions between V1.4.5 and V1.4.20 have been tested yet but
I guess it is introduced in V1.4.16 or V1.4.17 (if it’s a bug).
### Please provide any additional information below.
The issue is in storage commands. The doc says:
The client sends a command line, and then a data block; after that the
client expects one line of response, which will indicate success or
failure.
What if I send N(N > 1) storage commands at once, and then expects N lines
of response? The behaviour is not mentioned in the doc, and I’m not sure if
it is acceptable. If not so, you may close the issue directly, otherwise
this should be a bug.
code to reproduce: https://gist.github.com/mckelvin/6aaf1d14e7866719a9bc
The issue
CANNOT be reproduced on version 1.4.5(Gentoo), 1.4.13(Ubuntu), 1.4.15(OS X),
and CAN be reproduced on version 1.4.17(Gentoo), 1.4.20(OS X). Not all of
the versions between V1.4.5 and V1.4.20 have been tested yet but I guess it
is introduced in V1.4.16 or V1.4.17 (if it’s a bug).
I know anyway the client should be blamed for sending so much data but
refuse to receive any thing, but the server doesn't keep this behaviour
between these versions, that sounds buggy.
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