Re: [tor-bugs] #19259 [Metrics/Onionoo]: uncaught NFE

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

#19259: uncaught NFE
-----------------------------+-----------------------------------
 Reporter:  iwakeh           |          Owner:  iwakeh
     Type:  defect           |         Status:  needs_information
 Priority:  High             |      Milestone:
Component:  Metrics/Onionoo  |        Version:
 Severity:  Major            |     Resolution:
 Keywords:                   |  Actual Points:
Parent ID:                   |         Points:
 Reviewer:                   |        Sponsor:
-----------------------------+-----------------------------------

Comment (by iwakeh):

 That was the information I was intending to elicit :-) Thanks!

 Just a few things left:

 > How about we represent missing values on disk as empty string (`""`),
 which also saves disk space, and in memory as `-1.0` to keep the current
 code working?
 >
 I still would prefer Double.NaN (cf. comment:9) as being more obvious in
 code/in memory.
 On disk it could be the empty string even though not very nice, but it's
 used already anyway.


 > > `testCompare` fails, b/c there is an entry with the key from the first
 and values from the second element.
 >
 > Let's reject those lines, too.
 It's not that easy here; the test demonstrates would could happen b/c of
 the
 comparator not being compatible with equal.
 So the missing part is an ordering for the intervals. The only one I can
 think
 of is the lexicographical ordering according to interval ends, e.g.,
 [10, 20] before [10, 21] before [12, 25].  That should capture the intend
 of
 the current approach?

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/19259#comment:14>
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