[tor-bugs] #28652 [Core Tor/sbws]: When sbws stops making progress, log a warning

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#28652: When sbws stops making progress, log a warning
--------------------------------+-----------------------------------
 Reporter:  teor                |          Owner:  juga
     Type:  defect              |         Status:  needs_review
 Priority:  Medium              |      Milestone:  sbws: 1.1.x-final
Component:  Core Tor/sbws       |        Version:
 Severity:  Normal              |     Resolution:
 Keywords:  no-changes-version  |  Actual Points:
Parent ID:  #28547              |         Points:  1
 Reviewer:                      |        Sponsor:
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Changes (by juga):

 * status:  needs_revision => needs_review


Comment:

 I thought it would be better to detect there is no progress measuring
 unique relays in the scanner, since there we can keep track there of all
 the different relays seen and measured.

 Also because if we try to detect it in the bandwidth file, it will
 continue making progress until the 5th day, but the number of relays
 reported will be approximately the same after 5 days. We also don't know
 in the bandwidth file whether the relays reported are different relays
 from the previous bandwidth files.

 Note that the scanner is already either logging that some relays failed to
 be measured or stop, no matter whether the relays were unique or not.

 https://github.com/torproject/sbws/pull/349

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/28652#comment:6>
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