#6652 NORM Never A: Package collection can block on sending email.

[Zarro Boogs per Child]

#6652: Package collection can block on sending email.
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 Reporter:  cscott        |       Owner:  cscott        
     Type:  defect        |      Status:  new           
 Priority:  normal        |   Milestone:  Never Assigned
Component:  build-system  |     Version:                
 Keywords:                |    Verified:  0             
 Blocking:                |   Blockedby:                
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 mstone and cscott discovered that there had been no builds since mar 2.
 We looked at ps and it said the process corresponding to collect-pkgs.py
 had been started on march 2, was currently blocked, and had accumulated
 only 4h55m of CPU time since then (it was now 6 March).  lsof told us that
 the last open file was a TCP connection to port 25 of pedal.  Manually
 telnetting to pedal 25 seemed to indicate that smtp on pedal was
 reasonable.  We couldn't figure out why collect-pkgs.py had blocked at
 this point (apparently the smtp.sendmail call in line 96 of
 email_warnings.py).  We killed the stuck process and restarted.  If this
 problem reoccurs, we should investigate further -- perhaps fork before
 emailing so that it doesn't block our builds.

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Ticket URL: <http://dev.laptop.org/ticket/6652>
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