Amazing work. Thank you Florian for relentlessly driving this to the finish line, and thanks to everyone who pitched in to get us there.
On Wed, Jul 9, 2025 at 4:33 PM 'Andrew Overholt' via [email protected] <[email protected]> wrote: > 2086 probes migrated 😅 Great work! > > On Wed, Jul 9, 2025 at 7:18 PM Florian Quèze <[email protected]> wrote: > >> tl;dr: All data collection in Firefox Desktop now happens using Glean. >> Legacy telemetry recording APIs have been removed. >> >> With over 419 patches landed, 593 reviews from 75 unique reviewers (thank >> you!), 1242 files changed and 2086 probes migrated or removed since we >> decided to accelerate the migration [1], the effort to migrate data >> collection in Firefox Desktop from legacy Telemetry to Glean is now >> completed: arewegleanyet.com reached 100% today! >> >> To avoid causing immediate disruption in existing queries, the data for >> migrated probes is being sent to both Glean and legacy telemetry through >> automatic mirroring. We expect this mirroring to last about a year, to >> allow year-over-year queries and give people time to update their queries. >> >> Legacy telemetry recording APIs have been removed to ensure no new >> legacy-Telemetry only data collection is introduced, but legacy telemetry >> testing APIs are still in use. Some existing probes had test coverage and >> the tests still pass, checking the data recorded through mirroring. >> No immediate action is required, but it would be a good idea to start >> modifying tests using legacy telemetry APIs to instead check the data >> recorded in Glean[2]. >> >> Once the mirroring period is over (exact date TBD), legacy telemetry will >> stop sending data, and the remaining legacy telemetry code will be dead >> code to clean-up. If you already know you don’t need to have your data in >> both legacy telemetry and Glean, to reduce costs please remove the legacy >> telemetry mirrors for glean metrics in your code by removing the >> telemetry_mirror property from the Glean metrics, and removing the named >> definitions from Histograms.json, Scalars.yaml, or Events.yaml. >> >> Need help? Ask in https://chat.mozilla.org/#/room/#telemetry:mozilla.org >> >> [1] >> https://docs.google.com/document/d/14xYKOOi-8dHKcCP1awcT4_LxxyNFTB6Tkv18zQUGhn4/edit >> [2]: >> https://firefox-source-docs.mozilla.org/toolkit/components/glean/user/instrumentation_tests.html >> >> -- >> Florian Quèze >> >> -- >> You received this message because you are subscribed to the Google Groups >> "[email protected]" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion visit >> https://groups.google.com/a/mozilla.org/d/msgid/dev-platform/CAFu36SrQ-baorS9y%2Bj0sFpAFh%3DsYoEQ3%2BioNF5eX%2BKfsprZWyQ%40mail.gmail.com >> <https://groups.google.com/a/mozilla.org/d/msgid/dev-platform/CAFu36SrQ-baorS9y%2Bj0sFpAFh%3DsYoEQ3%2BioNF5eX%2BKfsprZWyQ%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> > -- > You received this message because you are subscribed to the Google Groups " > [email protected]" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion visit > https://groups.google.com/a/mozilla.org/d/msgid/dev-platform/CANOk3x%3DVnYB3ve8Hwp7Z1xJebyhR-Hu%2B2dPXSiQWKkkx0iXQRw%40mail.gmail.com > <https://groups.google.com/a/mozilla.org/d/msgid/dev-platform/CANOk3x%3DVnYB3ve8Hwp7Z1xJebyhR-Hu%2B2dPXSiQWKkkx0iXQRw%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "[email protected]" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/a/mozilla.org/d/msgid/dev-platform/CADa3RMOW7s7mM1xH7DeNndrUHMZbvHLX5%3D6bdwR6cOPkHWCFoQ%40mail.gmail.com.
