[Bug 1918930] [NEW] Unexpected file size of one package interrupts update process for all packages and leaves system vulnerable

[Ubu Foo]

Public bug reported:

An unexpected file size error of *one* package interrupts the whole
update process for *all* packages and this can leave the system in a
vulnerable state - this is not a constructed situation, but very real
right now, look at the following console output - sublime has some
problems with its package size, but then important ssh updates are not
executed. Bad.

The following packages will be upgraded:
  brave-browser git git-man libpython2.7-minimal libpython2.7-stdlib linux-firmware openssh-client openssh-server openssh-sftp-server python2.7 python2.7-minimal python3-pil sublime-merge
13 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 4.548 kB/199 MB of archives.
After this operation, 1.744 kB of additional disk space will be used.
Do you want to continue? [Y/n]
Get:1 https://download.sublimetext.com apt/stable/ sublime-merge 2049 [4.548 kB]
Err:1 https://download.sublimetext.com apt/stable/ sublime-merge 2049
  File has unexpected size (4542548 != 4548032). Mirror sync in progress? [IP: 104.236.0.104 443]
  Hashes of expected file:
   - SHA512:f65ce3ca80ff0877da48826a0151036cd8e0bdf28b03d225a03f202262ca1278accdac8e7eb46a22904203750ccf06e3abe496a44f7a4b0c3363076501f72369
   - SHA256:e71fcf37e9d934a60b5112a7b79c819f03f55d331371ec0e9b02378c6234478c
   - SHA1:7fe54a9f7ea5383dbdfc0aae39310e2902c6d7f5 [weak]
   - MD5Sum:fd78a3b986bd7da8b2ebd1f659f5938c [weak]
   - Filesize:4548032 [weak]
E: Failed to fetch https://download.sublimetext.com/files/sublime-merge_build-2049_amd64.deb  File has unexpected size (4542548 != 4548032). Mirror sync in progress? [IP: 104.236.0.104 443]
   Hashes of expected file:
    - SHA512:f65ce3ca80ff0877da48826a0151036cd8e0bdf28b03d225a03f202262ca1278accdac8e7eb46a22904203750ccf06e3abe496a44f7a4b0c3363076501f72369
    - SHA256:e71fcf37e9d934a60b5112a7b79c819f03f55d331371ec0e9b02378c6234478c
    - SHA1:7fe54a9f7ea5383dbdfc0aae39310e2902c6d7f5 [weak]
    - MD5Sum:fd78a3b986bd7da8b2ebd1f659f5938c [weak]
    - Filesize:4548032 [weak]
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

Note: This issue is not about the package size error in a third party
repo - I do not blame Ubuntu for problems with that. This is about
breaking the whole process of updating the system because one single
sub-task fails.

Why not make the basic tools really robust and reliable?

BTW - here are soooo many free pixels on this screen - why not add two
or three small sentences about text formatting syntax available in this
extremely primitive text input box? Is there any text formatting at all?
Why not put just a little bit of love to the user perspective and
experience? Just two little senteces about formatting would make it so
much more user friendly to type here. It feels so quick-and-dirty, it
hurts. Very sad.

** Affects: apt (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1918930

Title:
  Unexpected file size of one package interrupts update process for all
  packages and leaves system vulnerable

Status in apt package in Ubuntu:
  New

Bug description:
  An unexpected file size error of *one* package interrupts the whole
  update process for *all* packages and this can leave the system in a
  vulnerable state - this is not a constructed situation, but very real
  right now, look at the following console output - sublime has some
  problems with its package size, but then important ssh updates are not
  executed. Bad.

  The following packages will be upgraded:
    brave-browser git git-man libpython2.7-minimal libpython2.7-stdlib linux-firmware openssh-client openssh-server openssh-sftp-server python2.7 python2.7-minimal python3-pil sublime-merge
  13 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
  Need to get 4.548 kB/199 MB of archives.
  After this operation, 1.744 kB of additional disk space will be used.
  Do you want to continue? [Y/n]
  Get:1 https://download.sublimetext.com apt/stable/ sublime-merge 2049 [4.548 kB]
  Err:1 https://download.sublimetext.com apt/stable/ sublime-merge 2049
    File has unexpected size (4542548 != 4548032). Mirror sync in progress? [IP: 104.236.0.104 443]
    Hashes of expected file:
     - SHA512:f65ce3ca80ff0877da48826a0151036cd8e0bdf28b03d225a03f202262ca1278accdac8e7eb46a22904203750ccf06e3abe496a44f7a4b0c3363076501f72369
     - SHA256:e71fcf37e9d934a60b5112a7b79c819f03f55d331371ec0e9b02378c6234478c
     - SHA1:7fe54a9f7ea5383dbdfc0aae39310e2902c6d7f5 [weak]
     - MD5Sum:fd78a3b986bd7da8b2ebd1f659f5938c [weak]
     - Filesize:4548032 [weak]
  E: Failed to fetch https://download.sublimetext.com/files/sublime-merge_build-2049_amd64.deb  File has unexpected size (4542548 != 4548032). Mirror sync in progress? [IP: 104.236.0.104 443]
     Hashes of expected file:
      - SHA512:f65ce3ca80ff0877da48826a0151036cd8e0bdf28b03d225a03f202262ca1278accdac8e7eb46a22904203750ccf06e3abe496a44f7a4b0c3363076501f72369
      - SHA256:e71fcf37e9d934a60b5112a7b79c819f03f55d331371ec0e9b02378c6234478c
      - SHA1:7fe54a9f7ea5383dbdfc0aae39310e2902c6d7f5 [weak]
      - MD5Sum:fd78a3b986bd7da8b2ebd1f659f5938c [weak]
      - Filesize:4548032 [weak]
  E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

  Note: This issue is not about the package size error in a third party
  repo - I do not blame Ubuntu for problems with that. This is about
  breaking the whole process of updating the system because one single
  sub-task fails.

  Why not make the basic tools really robust and reliable?

  BTW - here are soooo many free pixels on this screen - why not add two
  or three small sentences about text formatting syntax available in
  this extremely primitive text input box? Is there any text formatting
  at all? Why not put just a little bit of love to the user perspective
  and experience? Just two little senteces about formatting would make
  it so much more user friendly to type here. It feels so quick-and-
  dirty, it hurts. Very sad.

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