Re: [BProc] bproc node down detection

[<er...@he...>]

On Fri, Feb 21, 2003 at 04:17:04PM -0800, Chris Austin wrote:
> Hi,
> 
> I'm looking for information on how bproc detects that a node is down and
> how does the bproc API inform the processes that have fork children that
> are on the down node?

Basically, if a slave disconnects or if there's a ping timeout to the
slave, the master daemon on the front end declares it down.  The ping
is inside the TCP connection that BProc uses.

Once a slave is down it notifies other processes that have a
bproc_notifier open (man bproc_notifier or look at bpstat source.)  If
you have a child process on a slave node that goes away for any
reason, the process will appear to be killed by SIGKILL.

- Erik