Telemetry+FHR v4: Submission policy

[Nicholas Alexander]

Hi Mark,

On Mon, Jan 26, 2015 at 9:50 AM, Mark Reid <mreid at mozilla.com> wrote:

> Hi all,
>
> As far as I know, the client currently doesn't retry if a submission fails.
>
> This would have minimal impact in the "old" FHR scheme, since each
> submission contains the entire history for that client.
>
> In the new scheme, however, this would result in potential data loss.
>
> I requested that we clarify the submission policy on the client in bug
> 1124212, but should we continue with the "try once, then move on" policy?
> or revisit client-side behaviour?
>
> If I'm mistaken and the client already retries, please let me know.
>

I believe that both Desktop and Android FHR clients try to resubmit.
Desktop's policy is described at [1].  It is possible Desktop's code has
diverged.  Android's policy copied Desktop's and is described at [2].  Both
policies explicitly claim to retry at most twice, delaying by at least one
hour between each submission (IIRC).

Hope that helps!
Nick

[1]
https://dxr.mozilla.org/mozilla-central/source/services/datareporting/policy.jsm#197
[2]
https://dxr.mozilla.org/mozilla-central/source/mobile/android/base/background/healthreport/upload/SubmissionPolicy.java#40
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