[tor-bugs] #20228 [Metrics/CollecTor]: Append all votes with same valid-after time to a single file in `recent/`

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#20228: Append all votes with same valid-after time to a single file in `recent/`
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 Reporter:  karsten            |          Owner:
     Type:  enhancement        |         Status:  new
 Priority:  Medium             |      Milestone:
Component:  Metrics/CollecTor  |        Version:
 Severity:  Normal             |     Resolution:
 Keywords:                     |  Actual Points:
Parent ID:                     |         Points:
 Reviewer:                     |        Sponsor:
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Comment (by iwakeh):

 * Regarding grouping by download vs. published time which came up in
 #20234, too.
  Let's have the discussion for all descriptors here, if this is ok?
  1. Grouping by published time brings more data consistency between
 CollecTor instances, as their download times for the same descriptors
 surely differ often.
  2. Grouping by download time means keeping track of a data item, i.e.
 download time, that so far is not part of the Tor protocol.  Why introduce
 it for descriptors that provide a published time?  Which is the download
 time after syncing descriptors: the initial download by the supplying
 CollecTor or the sync-download-time by the receiving one?
  3. Regarding #20234:comment:5: Clients might not be interested in past or
 future (according published time) descriptors and just download the file
 they consider current, if it changed since their last visit.


 * Regarding the notice:  I think the two week time frame is fine.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20228#comment:3>
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