download hangs with too small timeout

[clayg]

I think the cli used to require timeouts to be integers, so maybe this got worse recently, but with small enough timeouts values python-swiftclient seems to hang on download

vagrant@saio:~/python-swiftclient$ time swift download ec-disconnect-test liarliar -o killme --timeout 1
liarliar [auth 0.006s, headers 0.099s, total 0.343s, 31.151 MB/s]

real 0m1.206s
user 0m0.347s
sys 0m0.521s
vagrant@saio:~/python-swiftclient$ time swift download ec-disconnect-test liarliar -o killme --timeout 0.1
liarliar [auth 0.006s, headers 0.089s, total 0.391s, 27.268 MB/s]

real 0m1.252s
user 0m0.337s
sys 0m0.531s
vagrant@saio:~/python-swiftclient$ time swift download ec-disconnect-test liarliar -o killme --timeout 0.01
^C Aborted

real 0m6.048s
user 0m0.326s
sys 0m0.423s

[Tim Burke (1-tim-z)]

Trying to get the stacks for a hung process with https://github.com/tipabu/python-stack-xray/blob/master/python-stack-xray, I triggered a segfault:

[New LWP 49621]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
__futex_abstimed_wait_common64 (private=<optimized out>, cancel=true, abstime=0x7fff04f845d0, op=137, expected=0, futex_word=0x55a4dda7d760) at ./nptl/futex-internal.c:57
57 ./nptl/futex-internal.c: No such file or directory.
No symbol "PyGILState_STATE" in current context.

Thread 1 "swift" received signal SIGSEGV, Segmentation fault.
0x000055a4dc0dd13f in ?? ()
The program being debugged was signaled while in a function called from GDB.
GDB remains in the frame where the signal was received.
To change this behavior use "set unwindonsignal on".
Evaluation of the expression containing the function
(PyRun_SimpleString) will be abandoned.
When the function is done executing, GDB will silently stop.
History has not yet reached $1.
[Inferior 1 (process 49620) detached]

Might take a bit to figure out what we're actually waiting on :-/