sporadic gerrit build job failue: "broken pipe"

[Neels Hofmeyr]

On Sun, Dec 18, 2016 at 05:30:40PM +0100, Neels Hofmeyr wrote:
> We get this more often than not in the openbsc build job, I'm still not sure
> how to fix it:
> 
> ======================================================================
> ERROR: testBSCreload (__main__.TestVTYNAT)
> ----------------------------------------------------------------------
> Traceback (most recent call last):
>   File "./vty_test_runner.py", line 785, in testBSCreload
>     b0 = nat_bsc_sock_test(0, "lol")
>   File "./vty_test_runner.py", line 1276, in nat_bsc_sock_test
>     ipa_handle_resp(bsc, tk, verbose)
>   File "./vty_test_runner.py", line 1260, in ipa_handle_resp
>     x.send(IPA().id_resp(IPA().identity(name = tk.encode('utf-8'))))
> error: [Errno 32] Broken pipe
> 
> ----------------------------------------------------------------------
> Ran 43 tests in 51.717s
> 
> FAILED (errors=1)
> 
> 
> Reducing the nr of executors hasn't had an effect yet. Could there be another
> cause? Too fragile timing or something?

I've reduced the nr of executors from 6 down to 2 now. If this 'broken
pipe' still appears, I can set it back up. Although things don't
necessarily go faster with more executors, we build with 'make -j 9'.

~N

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