1685498 - Amend dom.quota.try telemetry events with sufficient information to reconstruct error propagation

Status: RESOLVED FIXED

(Core :: Storage: Quota Manager, task)

Description

[Simon Giesecke [:sg] [he/him]]

The dom.quota.try event records individual errors from QM_TRY uses. However, to understand the context of such calls better and, in particular, to understand where such errors lead to an overall initialization failure, we need to amend them with additional information, e.g. a sequence number or a higher resolution timestamp.

The analysis will probably still need to make use of some heuristics to find the right places to cut sequences into independent call stacks.

Comment 1

[Simon Giesecke [:sg] [he/him]]

Attachment: Bug 1685498 - Include sequence numbers in dom.quota.try telemetry event. r=#dom-workers-and-storage

Comment 2

[Simon Giesecke [:sg] [he/him]]

Attachment: data-review-request.txt

Comment 3

[Tim Smith (inactive) 👨‍🔬 [:tdsmith]]

Comment on attachment 9195873 [details]
data-review-request.txt

Thanks!

1. Is there or will there be documentation that describes the schema for the ultimate data set in a public, complete, and accurate way?

Yes, in the probe definition files and the Probe Dictionary.

2. Is there a control mechanism that allows the user to turn the data collection on and off?

Yes, the Firefox telemetry opt-out.

3. If the request is for permanent data collection, is there someone who will monitor the data over time?

Jan Varga, Simon Giesecke

4. Using the category system of data types on the Mozilla wiki, what collection type of data do the requested measurements fall under?

Cat 1, technical data.

5. Is the data collection request for default-on or default-off?

Default-on.

6. Does the instrumentation include the addition of any new identifiers (whether anonymous or otherwise; e.g., username, random IDs, etc. See the appendix for more details)?

No.

7. Is the data collection covered by the existing Firefox privacy notice?

Yes.

8. Does there need to be a check-in in the future to determine whether to renew the data?

n/a, permanent collection

9. Does the data collection use a third-party collection tool?

No.

Comment 4

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/3163022d6210
Include sequence numbers in dom.quota.try telemetry event. r=dom-workers-and-storage-reviewers,janv

Comment 5

[Atila Butkovits]

https://hg.mozilla.org/mozilla-central/rev/3163022d6210