1537874 - Investigate high crash rate on MC for early Fennec 67 beta

Status: RESOLVED FIXED

(Firefox for Android Graveyard :: General, enhancement)

Description

[Marcia Knous [:marcia]]

During the Channel Meeting today, Will posted the following graph:

https://data-missioncontrol.dev.mozaws.net/#/beta/android/main_crashes?aggregateLength=1&timeInterval=1209600&relative=0&percentile=99&normalized=0&disabledVersions=&versionGrouping=version

This crash shows that crashes are quite high given the low amount of usage, sustained over the last few days. I was asked to file a bug so we could track this issue.

I checked the Google Play Console as well as Socorro, and nothing has presented there yet.

Comment 1

[William Lachance (:wlach)]

Looking into it, going to run some queries against the telemetry crash datasets directly.

Comment 2

[Ritu Kothari (:ritu) (Inactive, please n-i to RyanVM, jcristau, or pascal)]

Attachment: Screenshot_2019-03-21 Mission Control.png

Comment 3

[William Lachance (:wlach)]

Good news, I plotted out the raw crash numbers in redash:

https://sql.telemetry.mozilla.org/queries/61988/source#159424

The Android numbers were unusually high for the past several days (i.e. 1100 vs the usually 800 or so), but the difference can almost certainly be attributed to this crasher in beta:

https://bugzilla.mozilla.org/show_bug.cgi?id=1493611

This accounts for 500+ crashes, which would easily explain the discrepency, as well as the fact that we have such a high number of crashes for such a low number of usage hours:

https://crash-stats.mozilla.com/search/?product=FennecAndroid&version=67.0b3&platform=android&process_type=browser&date=%3E%3D2019-03-07T21%3A49%3A00.000Z&date=%3C2019-03-21T21%3A49%3A00.000Z&_facets=signature&_sort=-date&_columns=date&_columns=signature&_columns=product&_columns=version&_columns=build_id&_columns=platform#facet-signature

I'll resolve this one as fixed.