1606903 - Collect some telemetry data related to storage.local API methods calls failed for unexpected indexedDB issues

Status: RESOLVED FIXED

(WebExtensions :: Storage, task, P1)

Description

[Luca Greco [:rpl] [:luca] [:lgreco]]

As part of a discussion related to how to recover from unexpected IndexedDB errors (e.g. due to unexpected corruptions of the underlying SQLITE file, e.g. see Bug 1603669) we agreed that it would be helpful to collect some data related to the incidence of this issues and (and possibly what kind of error we got).

At the moment, we do collect telemetry related to which kind of unexpected errors prevents the data migration from the JSON to the IndexedDB backend, but for the API methods themselves we do have histograms related to timing of the get and set methods, but we do not collect any telemetry on unexpected errors.

Comment 1

[Luca Greco [:rpl] [:luca] [:lgreco]]

Attachment: request-data-review-bug-1606903-storage-local-errors.md

Comment 2

[Luca Greco [:rpl] [:luca] [:lgreco]]

Attachment: Bug 1606903 - Record DOMException name for unexpected errors raised while executing a storage.local API call. r?mixedpuppy!

Comment 3

[Chris H-C :chutten|PTO (back Oct 23)]

Comment on attachment 9132382 [details]
request-data-review-bug-1606903-storage-local-errors.md

DATA COLLECTION REVIEW RESPONSE:

    Is there or will there be documentation that describes the schema for the ultimate data set available publicly, complete and accurate?

Yes. This collection is Telemetry so is documented in its definitions file [Events.yaml](https://hg.mozilla.org/mozilla-central/file/tip/toolkit/components/telemetry/Events.yaml) and the [Probe Dictionary](https://telemetry.mozilla.org/probe-dictionary/).

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

Yes. This collection is Telemetry so can be controlled through Firefox's Preferences.

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

No. This collection will expire in Firefox 81.

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

Category 1, Technical.

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

Default on for all channels.

    Does the instrumentation include the addition of any new identifiers?

No.

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

Yes.

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

Yes. :rpl is responsible for renewing or removing the collection before it expires in Firefox 81.

---
Result: datareview+

Comment 4

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/8f8cea1b5429
Record DOMException name for unexpected errors raised while executing a storage.local API call. r=mixedpuppy

Comment 5

[Oana Pop-Rus]

https://hg.mozilla.org/mozilla-central/rev/8f8cea1b5429