[tor-bugs] #18910 [Metrics/CollecTor]: distributing descriptors accross CollecTor instances

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#18910: distributing descriptors accross CollecTor instances
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 Reporter:  iwakeh             |          Owner:  iwakeh
     Type:  enhancement        |         Status:  needs_review
 Priority:  High               |      Milestone:  CollecTor 1.1.0
Component:  Metrics/CollecTor  |        Version:
 Severity:  Normal             |     Resolution:
 Keywords:  ctip               |  Actual Points:
Parent ID:                     |         Points:
 Reviewer:                     |        Sponsor:
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Comment (by iwakeh):

 Replying to [comment:22 karsten]:
 > ...
 > Here's how I'd explain configuring the relaydescs module to a new
 operator: "Want to collect relay descriptors?  Sure, just activate that
 module and also enable one or more descriptor sources: download from the
 directory authorities, read from a local directory, read from local cached
 descriptors, synchronize from other CollecTor instances.  If you don't
 enable any descriptor sources, you won't get any descriptors."
 >
 > This feels easier than: "Want to collect relay descriptors?  Sure, just
 activate that module and also enable between zero and three descriptors
 sources, and also consider synchronizing from other CollecTor instances."
 >

 This way of configuring only works for the current relaydescs module
 (whose properties are supposed to be removed partially in #20162).
 The other two modules, bridgedescs and exitlists, don't have any
 additional properties that could be used for avoiding the 'SyncOnly'
 option.
 In general, it is nicer to have a configuration value that expresses what
 it means.  The different download options for the relaydescs module where
 initially quite confusing.
 But maybe, I complicate things?  So what other 'streamlined' way could
 achieve the SyncOnly setting?

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/18910#comment:23>
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