[Bug 1067934] Re: spends 10+ minutes deduplicating Package lists

[Michael Casadevall]

** Also affects: anna (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: anna (Ubuntu Saucy)
   Importance: Undecided => High

** Changed in: anna (Ubuntu Saucy)
       Status: New => Confirmed

** Changed in: anna (Ubuntu Saucy)
    Milestone: None => ubuntu-13.08

** Changed in: anna (Ubuntu Saucy)
     Assignee: (unassigned) => Michael Casadevall (mcasadevall)

** Changed in: anna (Ubuntu Raring)
   Importance: Undecided => High

** Changed in: anna (Ubuntu Raring)
       Status: New => Confirmed

** Changed in: anna (Ubuntu Raring)
    Milestone: None => raring-updates

** Changed in: anna (Ubuntu Raring)
     Assignee: (unassigned) => Michael Casadevall (mcasadevall)

** Changed in: anna (Ubuntu Precise)
   Importance: Undecided => High

** Changed in: anna (Ubuntu Precise)
       Status: New => Confirmed

** Changed in: anna (Ubuntu Precise)
    Milestone: None => ubuntu-12.04.3

** Changed in: anna (Ubuntu Precise)
     Assignee: (unassigned) => Michael Casadevall (mcasadevall)

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https://bugs.launchpad.net/bugs/1067934

Title:
  spends 10+ minutes deduplicating Package lists

Status in “anna” package in Ubuntu:
  Confirmed
Status in “net-retriever” package in Ubuntu:
  Confirmed
Status in “anna” source package in Precise:
  Confirmed
Status in “net-retriever” source package in Precise:
  Confirmed
Status in “anna” source package in Quantal:
  New
Status in “net-retriever” source package in Quantal:
  New
Status in “anna” source package in Raring:
  Confirmed
Status in “net-retriever” source package in Raring:
  Confirmed
Status in “anna” source package in Saucy:
  Confirmed
Status in “net-retriever” source package in Saucy:
  Confirmed

Bug description:
  At some point after Lucid's initial release, the ubuntu alternate
  installer seems to stall for a very long time (10+ minutes) before the
  partitioning menu comes up. I don't think it was happening for the
  first year or so after Lucid's release, but I'm not real clear on when
  it started happening (it was only recently brought to my attention).

  I think it is happening in /usr/lib/debian-installer/net-retriever's deduplicate function...
  When it is stalled out, it keeps adding content to /tmp/net-retriever-NNNN-deduplicate/, eventually it moves on, but it takes forever. The speed of the install machine doesn't appear to matter much.
  There's nothing obvious in the log as to why it's stalling at that point...

  I thought it might be some issue with our preseeding, but it appears
  to happen on an install without preseeding as well.

  Newer versions of Ubuntu (at least Xubuntu 12.04) don't seem to
  experience this problem, as far as I can tell.

  We're using the netboot installer, apparently last updated on
  2011-04-29:

  2011-04-29 03:32:27-07:00 checking for updates: http://us.archive.ubuntu.com/ubuntu/dists/lucid/main/installer-i386/current/images/netboot/netboot.tar.gz
  2011-04-29 03:33:13-07:00 updated: /var/lib/tftpboot/ubuntu-installer/lucid.i386.netboot.tar.gz

  though as far as i can tell, that file hasn't been updated on the
  mirrors since 2010-04-25.

  live well,
    vagrant

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