[tor-bugs] #20440 [Metrics/metrics-lib]: endless wait in BlockingIteratorImpl

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#20440: endless wait in BlockingIteratorImpl
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 Reporter:  iwakeh               |          Owner:  karsten
     Type:  defect               |         Status:  new
 Priority:  High                 |      Milestone:
Component:  Metrics/metrics-lib  |        Version:
 Severity:  Normal               |     Resolution:
 Keywords:                       |  Actual Points:
Parent ID:                       |         Points:
 Reviewer:                       |        Sponsor:
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Comment (by iwakeh):

 Replying to [comment:4 karsten]:
 > Could this be related to #20421?  The reason why this only affects
 Onionoo with the `--update-only` execution mode might be that Onionoo
 without that execution mode simply accumulates waiting metrics-lib threads
 without anybody noticing.

 I don't think so, because the problematic descriptors in #20421 were
 initially written by CollecTor w/o using metrics-lib.  These descriptors
 only became visible while Oninoo processed CollecTor data.

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Ticket URL: <https://troodi.torproject.org/projects/tor/ticket/20440#comment:5>
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