Github user jrushf1239k commented on the pull request:

    https://github.com/apache/trafficserver/pull/473#issuecomment-183425465
  
    Yes, it’s being done in HttpTransact::handle_response_from_parent() when 
the parent is marked for retry, “parent_result->retry == true”.  There 
it’s marked up only when there is a good connection.
    
    Thanks
    --
    John J. Rushford
    IPCDN Engineering
    1400 Wewatta Street, Denver Colorado 80202
    [email protected]
    
    
    
    
    
    
    
    
    
    
    
    From: Leif Hedstrom 
<[email protected]<mailto:[email protected]>>
    Reply-To: apache/trafficserver 
<[email protected]<mailto:[email protected]>>
    Date: Friday, February 12, 2016 at 10:36 AM
    To: apache/trafficserver 
<[email protected]<mailto:[email protected]>>
    Cc: John Rushford 
<[email protected]<mailto:[email protected]>>
    Subject: Re: [trafficserver] fixed a bug where a parent is not marked down 
due to a race updating … (#473)
    
    
    Cool. One (stupid) question: You remove the call to markParentUp(result), 
is that being done elsewhere in the existing code paths?
    
    —
    Reply to this email directly or view it on 
GitHub<https://github.com/apache/trafficserver/pull/473#issuecomment-183423695>.



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