Windows slaves freezing on downloadFile step

Elliot Saba staticfloat at
Wed Sep 30 17:35:30 UTC 2015

Hello all, I have some Windows Server buildslaves that are freezing on a
master -> slave file transfer step.  The file itself is only a few KB, so I
know it's not a network speed issue, and other steps (including slave ->
master uploads) have been successful.

You can see the buildmaster webpage here
<>, but that doesn't
show too much information, except that (1) the slaves continually timeout
and restart themselves, and (2) the webpage "interrupt" button doesn't seem
to work, so the buildslaves just continually restart themselves with no
apparent way to force them to stop.  twistd.log on one of the slaves shows this
log <>, which I
think shows a timeout on the slave side, thinking that the buildmaster is
frozen.  My question is:

(1) What's the proper way to clear the queue when the "interrupt" button
doesn't work?  So far, I'm getting around this by stopping the build
master, then starting it back up, and canceling the jobs from the "pending"
queue before the buildslaves can reconnect.

(2) Why would this download step be freezing?  I've tried turning off the
windows firewall and that doesn't seem to be the problem.

If there's more information I need to give, please let me know!
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