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From Alex Boisvert <>
Subject Re: Build hangs
Date Wed, 09 Nov 2011 16:02:39 GMT
Wild guess:  if you are somehow exec()'ing a process, you need to read the
stdout/stderr streams otherwise the child process will wait/hang until it
output buffers are consumed. (only happens when outstanding output exceeds
> X kilobytes)


On Wed, Nov 9, 2011 at 4:48 PM, Allen Riddle <> wrote:

> All,
> My build script periodically hangs on Linux systems.  The last message I
> see on the log is "Trying to override old definition of datatype junit."
>  This doesn't happen on OS X or Windows, but only in Ubuntu and CentOS.  I
> did an strace on it the process and what I see is a child process is
> getting created but nanosleep is repeatedly being called.  I don't see
> anything my unit tests that could cause such an issue.  Any ideas?  Thanks.

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