959153 - add ability for the processor to SIGKILL the stackwalker

Status: RESOLVED WONTFIX

(Socorro :: Backend, task)

Description

[K Lars Lohn [:lars] [:klohn]]

In bug 950710, we talk about a rare stackwalker failure that can bring down a processor.  This bug about making the processor save itself by sending SIGKILL to a stackwalker subprocess if the processor detects misbehavior.  

requirements: 
- figure out how to set a timeout on subprocess io
- once the timeout exception is caught, kill the subprocess. here's help on how to do that: http://stackoverflow.com/questions/4789837/how-to-terminate-a-python-subprocess-launched-with-shell-true
- make sure that the stackwalker assassination happens at a low enough level that the worker thread can recover and continue with whatever information it has.  
- see branch "hybrid-processor-killer" for a some bit rotted early work on this idea.

Comment 1

[K Lars Lohn [:lars] [:klohn]]

reopen iff the "timeout 30" solution of Bug 972857 & Bug 980435 fails to resolve the issue.