1364606 - Checksum mismatches in V4 updates

Status: RESOLVED WORKSFORME

(Toolkit :: Safe Browsing, enhancement, P2)

Description

[François Marier [:francois]]

We are seeing about 2% of updates returning checksum mismatches: https://mzl.la/2pu5t81 (start=5)

Comment 1

[Dimi Lee [:dimi]]

Hi francois,
Do you mind me taking this bug since I am working on it now(trying to find the root cause) ?

Comment 2

[Dimi Lee [:dimi]]

The error rate seems significantly dropped since 5/7.
In 5/6, the error rate is pretty high - 4.52%[1].
After that, the error rate is average 0.08% (5/7 - 5/20)[2].

Maybe this somehow explained why I just cannot reproduce this bug over past one week.

[1] https://telemetry.mozilla.org/new-pipeline/dist.html#!cumulative=0&end_date=2017-05-06&keys=google4!google!google4!__none__&max_channel_version=nightly%252F55&measure=URLCLASSIFIER_UPDATE_ERROR&min_channel_version=null&processType=*&product=Firefox&sanitize=1&sort_keys=submissions&start_date=2017-05-06&table=1&trim=1&use_submission_date=0
[2] https://telemetry.mozilla.org/new-pipeline/dist.html#!cumulative=0&end_date=2017-05-20&keys=google4!google!google4!other&max_channel_version=nightly%252F55&measure=URLCLASSIFIER_UPDATE_ERROR&min_channel_version=null&processType=*&product=Firefox&sanitize=1&sort_keys=submissions&start_date=2017-05-07&table=1&trim=1&use_submission_date=0

Comment 3

[François Marier [:francois]]

It's gone down to 0.04% in the last 14 days: https://mzl.la/2rhMDym

Something must have changed on the server-side. I think we can consider this resolved.