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Bug#616489: marked as done (don't download the seven megabytes if it will only end up in "hash sums mismatch" please)

Your message dated Wed, 1 Mar 2017 20:24:15 +0100
with message-id <20170301192415.hixkdp2lajxgrxnz@crossbow>
and subject line Re: Hash Sum mismatch catch-all bug
has caused the Debian Bug report #624122,
regarding don't download the seven megabytes if it will only end up in "hash sums mismatch" please
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner@bugs.debian.org
immediately.)


-- 
624122: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=624122
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: apt
Version: 0.8.11.5

This is so silly.

It downloads a full 7 megabytes.

Only to discover the hash sums mismatch.

What a waste of time.

It happens so often these days.

# apt-get update
Ign http://emacs.naquadah.org unstable/ InRelease
Hit http://emacs.naquadah.org unstable/ Release.gpg
Ign http://mozilla.debian.net experimental InRelease
Hit http://emacs.naquadah.org unstable/ Release
Hit http://ftp.tw.debian.org experimental InRelease
Hit http://ftp.tw.debian.org unstable InRelease
Hit http://emacs.naquadah.org unstable/ Packages
Get:1 http://ftp.tw.debian.org experimental/main i386 Packages [557 kB]
Hit http://mozilla.debian.net experimental Release.gpg
Hit http://mozilla.debian.net experimental Release
Hit http://mozilla.debian.net experimental/iceweasel-4.0 i386 Packages
Ign http://emacs.naquadah.org unstable/ Translation-en
Ign http://mozilla.debian.net experimental/iceweasel-4.0 TranslationIndex
Ign http://mozilla.debian.net experimental/iceweasel-4.0 Translation-en
Hit http://ftp.tw.debian.org experimental/contrib i386 Packages/DiffIndex
Hit http://ftp.tw.debian.org experimental/non-free i386 Packages/DiffIndex
Ign http://ftp.tw.debian.org experimental/contrib TranslationIndex
Ign http://ftp.tw.debian.org experimental/main TranslationIndex
Ign http://ftp.tw.debian.org experimental/non-free TranslationIndex
Get:2 http://ftp.tw.debian.org unstable/main i386 Packages [6,998 kB]
Hit http://ftp.tw.debian.org unstable/contrib i386 Packages/DiffIndex
Hit http://ftp.tw.debian.org unstable/non-free i386 Packages/DiffIndex
Ign http://ftp.tw.debian.org unstable/contrib TranslationIndex
Hit http://ftp.tw.debian.org unstable/main TranslationIndex
Ign http://ftp.tw.debian.org unstable/non-free TranslationIndex
Hit http://ftp.tw.debian.org experimental/contrib i386 Packages
Ign http://ftp.tw.debian.org experimental/contrib Translation-en
Ign http://ftp.tw.debian.org experimental/main Translation-en
Ign http://ftp.tw.debian.org experimental/non-free Translation-en
Ign http://ftp.tw.debian.org unstable/contrib Translation-en
Ign http://ftp.tw.debian.org unstable/non-free Translation-en
Fetched 7,555 kB in 2min 34s (48.8 kB/s)
W: Failed to fetch bzip2:/var/lib/apt/lists/partial/ftp.tw.debian.org_debian_dists_experimental_main_binary-i386_Packages  Hash Sum mismatch

W: Failed to fetch bzip2:/var/lib/apt/lists/partial/ftp.tw.debian.org_debian_dists_unstable_main_binary-i386_Packages  Hash Sum mismatch

E: Some index files failed to download. They have been ignored, or old ones used instead.

--- End Message ---
--- Begin Message --- 
Hi,

I am hereby closing #624122 and its merges as it was never tracking
a specific issue, but catched all mails from users which encountered an
error involving the words "Hash Sum mismatch".

Over the years we have dealt with at least three different bugs in here
which would have been better if they would have been in new fresh bugs
rather than expanding on an existing but ultimatively unrelated bug
– not counting the initial "bug" of having repository updates not being
atomic, but over the last 6 years a lot has improved on that front as
well.

deity, ftpmasters, mirror and other teams have worked on whats dubbed
"by-hash" for years, which resulted in various smaller and bigger
improvements rolled out either universially by now and/or will be
included in the stretch release (depending on if server, client or both
need to support something).


That work seems to pay off as (ignoring spam) this bug class was pretty
silent in the last few months – and if someone wants to talk about it
the reporter will be better of starting with a new bug as going through
the buglog of a 6years and counting open bugreport intermixed with
unrelated messages and spam is kinda daunting…

In other words: It has taken 3 years, but now is the day I was talking
about: "One day, I will have the mental strength to close it…".


Triggered by koike on IRC btw who were asking about the 1y old "will
eventually be a different message for this" (talking about weak hashes)
which we have figured out was resolved a few months later.


Thanks to all reporters and to everyone working on these issues!


Best regards

David Kalnischkies

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