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

["Tor Bug Tracker & Wiki" <blackhole@xxxxxxxxxxxxxx>]

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

Comment (by iwakeh):

 Thanks for the history here!  Parts like `rsync` to `recent` could be
 guessed from the code, but its good to have it confirmed.  And, for other
 topics like the purpose of 'recent' it is very important and an easy read
 :-)

 Well, so the definition/purpose for/of `recent` is:
  Provide the latest subset of descriptors a CollecTor could acquire, where
 'latest' is currently defined as three days or more current acquisition
 time, which can be download time or sync-time (once sync is in place).

 Following this definition your second suggestion to store all descriptors
 in 'recent' bundled according to their acquisition time is a simple
 consequence.

 It just needs to be stated prominently somewhere that recent is not for
 human-readable browsing.
 (The database should not be too difficult to be supplied here soon.)

 How to approach the implementation?
 I'd like to have this implementation in order to simplify merging and some
 of the existing CollecTor code.
 I could implement it together with the sync ticket (with decent commits
 for review).  That also would be a big step forward in modularizing the
 Collector code and making it testable etc.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20228#comment:6>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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