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Re: [tor-bugs] #2878 [Core Tor/Tor]: Don't bootstrap from an old consensus if we're about to replace it



#2878: Don't bootstrap from an old consensus if we're about to replace it
-------------------------------------------------+-------------------------
 Reporter:  Sebastian                            |          Owner:  (none)
     Type:  enhancement                          |         Status:  new
 Priority:  High                                 |      Milestone:  Tor:
                                                 |  unspecified
Component:  Core Tor/Tor                         |        Version:
 Severity:  Major                                |     Resolution:
 Keywords:  performance, bootstrap, tor-client,  |  Actual Points:
  s8-performance, s8-errors, 040-roadmap-        |
  proposed                                       |
Parent ID:  #23605                               |         Points:
 Reviewer:                                       |        Sponsor:
                                                 |  Sponsor8-can
-------------------------------------------------+-------------------------

Comment (by nickm):

 It's possible we don't actually want to do this.  This ticket is older
 than microdescriptors, older than the onion key rotation changes of
 prop#274 (see #21641) and (I think) older than the live/reasonably live
 distinction.  Most of the microdescriptors from any reasonably live
 consensus should still be usable these days, especially

 The worst case here is when we have a consensus but we shut down before we
 can fetch any microdescriptors for it, and we start up again in the last
 minutes when the consensus is still reasonably live.  I think even then
 the damage should be limited.

 Taylor nodes that some other issues discussed above are variants on the
 jump-to-80% problem (see #22266).

 I say that we should either wontfix, or mark this as needs_information,
 said information being "what is the measurable effect of this issue in
 practice?"

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/2878#comment:21>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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