[metrics-bugs] #25175 [Metrics/Onionoo]: Change 3 months graphs to 6 months graphs

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#25175: Change 3 months graphs to 6 months graphs
-----------------------------+--------------------------------
 Reporter:  karsten          |          Owner:  metrics-team
     Type:  enhancement      |         Status:  new
 Priority:  Medium           |      Milestone:  Onionoo 1.16.0
Component:  Metrics/Onionoo  |        Version:
 Severity:  Normal           |     Resolution:
 Keywords:                   |  Actual Points:
Parent ID:                   |         Points:
 Reviewer:                   |        Sponsor:
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Changes (by karsten):

 * priority:  Low => Medium
 * cc: metrics-team (added)
 * milestone:   => Onionoo 1.16.0


Comment:

 Replying to [ticket:25175 karsten]:
 > As of yesterday (cf. #16513 and #24729), we're retaining bandwidth and
 weights histories on 24 hour granularity for 6 months rather than just 3.
 In 3 months from today (May 2018) we can extend the 3 months graphs to 6
 months graphs with a granularity of 24 hours per data point.
 >
 > If we decide to do this, the `"3_month"` string will change to
 `"6_month"`, and the object will contain twice as many values. We should
 make sure that Relay Search can handle this before we make this change.

 Hey, Relay Search, can you handle this change?

 To be clear, this would affect all documents containing graphs, including
 bandwidth, weights, clients, and uptime.

 Adding to the 1.16.0 milestone so that we're sure to find an answer to
 this question before putting out the next version.

 > Requires a minor protocol version change.

 In fact, we should consider making this part of the already planned major
 protocol version change for the same reason as given in #25177.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25175#comment:1>
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