[tor-bugs] #24601 [Metrics/Website]: CollecTor directory listing apparently breaks when a directory in recent/ runs dry

[Tor Bug Tracker & Wiki]

#24601: CollecTor directory listing apparently breaks when a directory in recent/
runs dry
---------------------------------+--------------------------
     Reporter:  karsten          |      Owner:  metrics-team
         Type:  defect           |     Status:  new
     Priority:  Medium           |  Milestone:
    Component:  Metrics/Website  |    Version:
     Severity:  Normal           |   Keywords:
Actual Points:                   |  Parent ID:
       Points:                   |   Reviewer:
      Sponsor:                   |
---------------------------------+--------------------------
 The CollecTor directory listings on Tor Metrics broke at or shortly after
 2017-12-11 13:08:

 https://metrics.torproject.org/collector/recent/relay-descriptors/server-
 descriptors/

 The index.json file looks okay right now:

 https://collector.torproject.org/index/index.json

 I suspect the reason is that some of the directories in `recent/`
 containing sanitized bridge descriptors ran dry yesterday afternoon. Maybe
 we ran into a `NullPointerException` or something.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/24601>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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