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Re: [tor-bugs] #20994 [Metrics/Onionoo]: invalid first_seen timestamp on bridges



#20994: invalid first_seen timestamp on bridges
-----------------------------+------------------------------
 Reporter:  cypherpunks      |          Owner:  metrics-team
     Type:  defect           |         Status:  new
 Priority:  Medium           |      Milestone:
Component:  Metrics/Onionoo  |        Version:
 Severity:  Normal           |     Resolution:
 Keywords:                   |  Actual Points:
Parent ID:                   |         Points:
 Reviewer:                   |        Sponsor:
-----------------------------+------------------------------

Comment (by karsten):

 I looked more into this issue and found some interesting facts:
  - Roughly 22% of all bridges are affected.
  - 0.13% of bridges have `last_seen` ''and'' `first_seen` dates of
 1970-01-01.
  - Relays are completely unaffected.
  - This started on 2014-12-09, which is the earliest `last_seen` date of a
 bridge with an invalid `first_seen` date of 1970-01-01.

 Staring at code didn't reveal any insights, so I'll set up a new local
 Onionoo instance to see whether that produces `first_seen` dates of
 1970-01-01 in the initial run or subsequent runs.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20994#comment:1>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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