** Patch added: "lp1723198_zesty.debdiff"
   
https://bugs.launchpad.net/ubuntu/+source/dpkg/+bug/1723198/+attachment/5022883/+files/lp1723198_zesty.debdiff

** Changed in: dpkg (Ubuntu Zesty)
       Status: Confirmed => In Progress

** Description changed:

  [Impact]
  
  ca-certificates-java currently depend on openjdk-7 which no longer exist
  after Trusty. It triggers failures while doing release upgrade, due to
  the triggers loop.
  
  [Test Case]
  
- 1. Install Ubuntu server 14.04.5 + all the updates
- 
+ # Install Ubuntu server 14.04.5 + all the updates
  (I used "uvt-kvm create trustylp1723198 release=trusty")
  
- ubuntu@trustylp1723198:~$ cat /etc/os-release
- NAME="Ubuntu"
- VERSION="14.04.5 LTS, Trusty Tahr"
- [...]
+ sudo apt update
+ sudo apt upgrade
  
- $ sudo apt update
- $ sudo apt upgrade
- $ sudo reboot
+ # Install ca-certificates-java and man-db
+ sudo apt install ca-certificates-java man-db
  
- 2. Install ca-certificates-java and man-db
+ # Upgrade to 16.04 LTS with do-release-upgrade and proceed with the upgrade
+ sudo do-release-upgrade
  
- $ sudo apt install ca-certificates-java man-db
- 
- 3. Reboot
- 
- $ sudo reboot
- 
- 4. Upgrade to 16.04 LTS with do-release-upgrade and proceed with the
- upgrade
- 
- $ sudo do-release-upgrade
- 
- Continue running under SSH?
- [...]
- Continue [yN] y
- 
- [...]
- 
- Do you want to start the upgrade?
- 
- 14 installed packages are no longer supported by Canonical. You can
- still get support from the community.
- 
- 12 packages are going to be removed. 141 new packages are going to be
- installed. 412 packages are going to be upgraded.
- 
- You have to download a total of 258 M. This download will take about
- 58 seconds with your connection.
- 
- Installing the upgrade can take several hours. Once the download has
- finished, the process cannot be canceled.
- 
- Continue [yN] Details [d] y
- 
- [...]
- 
- Question: Restart services during upgrade --> Yes
- 
- [...]
- 
+ output:
  Removing ca-certificates-java (20130815ubuntu1) ...
  Removing openjdk-7-jre-headless:amd64 (7u151-2.6.11-2ubuntu0.14.04.1) ...
  dpkg: cycle found while processing triggers:
  chain of packages whose triggers are or may be responsible:
  man-db -> ca-certificates
  packages' pending triggers which are or may be unresolvable:
  ca-certificates: update-ca-certificates
  man-db: /usr/share/man
  dpkg: error processing package ca-certificates (--remove):
  triggers looping, abandoned
  
  [Regression Potential]
  
   * Regression is low, Xenial and late doesn't have openjdk-7 available
- as it has openjdk-8.
+ as it has openjdk-8. This will have the effect to make the upgrade work
+ correctly.
  
  [Other Info]
  
-  Debian bug :
-  * https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=863803
+  * Debian bug :
+  https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=863803
  
-  Debian commit:
-  * 
https://anonscm.debian.org/cgit/pkg-java/ca-certificates-java.git/commit/?id=0ddf3c9
+  * Debian commit:
+  
https://anonscm.debian.org/cgit/pkg-java/ca-certificates-java.git/commit/?id=0ddf3c9
  
  [Original Description]
  Test Case:
  1. Install Ubuntu server 14.04.5 + all the updates
  2. Install ca-certificates-java and man-db
  3. Reboot
  4. Upgrade to 16.04 LTS with do-release-upgrade and proceed with the upgrade
  
  Actual Result
  Upgrade fails with
  Removing ca-certificates-java (20130815ubuntu1) ...
  Removing openjdk-7-jre-headless:amd64 (7u151-2.6.11-2ubuntu0.14.04.1) ...
  dpkg: cycle found while processing triggers:
   chain of packages whose triggers are or may be responsible:
    man-db -> ca-certificates
   packages' pending triggers which are or may be unresolvable:
    ca-certificates: update-ca-certificates
    man-db: /usr/share/man
  dpkg: error processing package ca-certificates (--remove):
   triggers looping, abandoned
  
  I have no further information to give at this time except to say that
  there were several errors during the upgrade process from 14.04.
  
  ProblemType: Package
  DistroRelease: Ubuntu 16.04
  Package: ca-certificates 20170717~16.04.1
  ProcVersionSignature: Ubuntu 4.4.0-97.120-generic 4.4.87
  Uname: Linux 4.4.0-97-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.1-0ubuntu2.10
  Architecture: amd64
  Date: Thu Oct 12 17:52:19 2017
  ErrorMessage: triggers looping, abandoned
  InstallationDate: Installed on 2013-11-16 (1425 days ago)
  InstallationMedia: Xubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016)
  PackageArchitecture: all
  RelatedPackageVersions:
   dpkg 1.18.4ubuntu1.2
   apt  1.2.24
  SourcePackage: ca-certificates
  Title: package ca-certificates 20170717~16.04.1 failed to install/upgrade: 
triggers looping, abandoned
  UpgradeStatus: Upgraded to xenial on 2017-10-12 (0 days ago)

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https://bugs.launchpad.net/bugs/1723198

Title:
  [SRU] upgrade from 14.04 to 16.04 fails with: ca-certificates
  20170717~16.04.1 failed to install/upgrade: triggers looping,
  abandoned

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