https://bz.apache.org/SpamAssassin/show_bug.cgi?id=7676
Bug ID: 7676
Summary: mkupdates produces different files with the same
filenames causing issues with caching proxies
Product: Spamassassin
Version: unspecified
Hardware: All
OS: All
Status: NEW
Severity: major
Priority: P2
Component: Website/Infrastructure
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: Undefined
https://wiki.apache.org/spamassassin/InfraNotes2017 documents when mkupdates is
run:
At 02:25 it "creates ${REVISION}.tar.gz ${REVISION}.tar.gz.sha1 and
${REVISION}.tar.gz.asc in /var/www/automc.spamassassin.org/updates for mirrors
to pull"
At 08:30 it "creates ${REVISION}.tar.gz ${REVISION}.tar.gz.sha1 and
${REVISION}.tar.gz.asc in /var/www/automc.spamassassin.org/updates for mirrors
to pull"
Several mirrors are not serving content directly, they're behind Cloudflare's
caching proxy.
User A downloads "${REVISION}.tar.gz" and "${REVISION}.tar.gz.sha1" at 03:00.
They have GPG checking disabled, probably because of this issue.
They get the content of the 02:25 files and everything works.
User B downloads "${REVISION}.tar.gz", "${REVISION}.tar.gz.sha1" and
"${REVISION}.tar.gz.asc" at 09:00.
Cloudflare has cached "${REVISION}.tar.gz" and "${REVISION}.tar.gz.sha1". They
get the content of 02:25 files.
No one has requested "${REVISION}.tar.gz.asc" so Cloudflare does not have it
cashed. They get the content of the 08:30 files.
The content is different between the two runs of mkupdates but has the same
filenames because the revision hasn't changed. I don't know why that is
necessary or desirable but it does not interact well with caching proxies.
The workaround is to block access to Cloudflare, but then bug 7662 happens.
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