group.of.nepali.translators team mailing list archive

[Brian Murray <brian@xxxxxxxxxx>]

Hello Carlo, or anyone else affected,

Accepted apt-xapian-index into zesty-proposed. The package will build
now and be available at https://launchpad.net/ubuntu/+source/apt-xapian-
index/0.47ubuntu13.1 in a few hours, and then in the -proposed
repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested and change the tag from
verification-needed-zesty to verification-done-zesty. If it does not fix
the bug for you, please add a comment stating that, and change the tag
to verification-failed-zesty. In either case, details of your testing
will help us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

** Changed in: apt-xapian-index (Ubuntu Zesty)
       Status: Triaged => Fix Committed

** Tags added: verification-needed verification-needed-zesty

** Changed in: apt-xapian-index (Ubuntu)
       Status: Confirmed => Fix Released

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https://bugs.launchpad.net/bugs/1652641

Title:
  crash in indexer.py, AttributeError: 'NoneType' object has no
  attribute 'unlink'

Status in apt-xapian-index package in Ubuntu:
  Fix Released
Status in apt-xapian-index source package in Xenial:
  Triaged
Status in apt-xapian-index source package in Zesty:
  Fix Committed

Bug description:
  [Impact]

  When the apt-xapian-index is already up to date, and under certain
  conditions, update-apt-xapian-index throws an exception.

  The index /var/lib/apt-xapian-index is up to date
  Exception ignored in: <bound method ServerProgress.__del__ of
  <axi.indexer.ServerProgress object at 0x7f04a5ae4c18>>
  Traceback (most recent call last):
    File "/usr/lib/python3/dist-packages/axi/indexer.py", line 306, in __del__
  AttributeError: 'NoneType' object has no attribute 'unlink'

  This happens more frequently when it is run with nice and ionice,
  which is the case in the cron.weekly/apt-xapian-index cron job.

  This is not severe, since the exception is thrown on exit, and depends
  on the way python3 cleans up the environment. Anyway, this leaves a
  socket file behind, and creates noise in cron logs (see comment #2).

  The patch keeps a reference to the os.unlink function in the
  ServerProgress instance, such that it has the same lifespan.

  [Test Case]

  * `sudo nice -n 19 ionice -c 3 update-apt-xapian-index --quiet`
  * may need to run 4 times or more
  * no exception is thrown

  [Regression Potential]

  * If the os module is unloaded anyway and self.os_unlink becomes
  unreachable, we get the same exception again.

  [Other Info]

  * There is probably a more "pythonic" way to fix this. For instance,
  avoiding __del__. That requires a larger change.

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