[tor-bugs] #4483 [Tor]: If k of n authorities are down, k/n bootstrapping clients are delayed for minutes

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#4483: If k of n authorities are down, k/n bootstrapping clients are delayed for
minutes
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 Reporter:  arma                                 |          Owner:  teor
     Type:  defect                               |         Status:
 Priority:  High                                 |  needs_review
Component:  Tor                                  |      Milestone:  Tor:
 Severity:  Normal                               |  0.2.8.x-final
 Keywords:  performance, bootstrap, dirauth-     |        Version:
  dos-resistance, tor-client, large-feature,     |     Resolution:
  prop210, 028-triage, TorCoreTeam201512,        |  Actual Points:
  MikePerry201512R                               |         Points:
Parent ID:  #2664                                |  medium/large
  Sponsor:  SponsorU                             |
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Comment (by teor):

 Replying to [comment:43 teor]:
 > I also made sure n_download_attempts is incremented for all schedules.
 It doesn't make sense to only track it for attempt-based schedules.

 But I didn't update the unit tests for that. And, while I was updating the
 unit tests, I discovered I was incrementing it past
 IMPOSSIBLE_TO_DOWNLOAD. Which is bad.

 Fixed in 6415d37.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/4483#comment:45>
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