This bug was fixed in the package facter - 1.6.5-1ubuntu1.2
---
facter (1.6.5-1ubuntu1.2) precise; urgency=low
* d/p/thread-critical-freeze: fix "puppet apply" hang by avoiding
unnecessary thread critical sections (LP: #986973).
-- Robie BasakTue, 02 Jul 2013 03:21:36 +
tl;dr: I second the verification
Dear everyone,
I have used puppet to maintain a collection of some dozens of Precise
servers. This bug, as described, has manifested regularly.
I've enabled the precise-proposed repository on a few test servers and
updated facter to 1.6.5-1ubuntu1.2. Based on som
In the ten days before applying the -proposed update (1.6.5-1ubuntu1.2),
one of my affected servers had nine failures (I haven't been testing any
others). In the ten days since applying the -proposed update, the same
server has had no failures at all. I haven't made any other changes in
this time.
As discussed with Robie, this upload is being folded with the current
one for dual verification.
** Changed in: facter (Ubuntu Precise)
Status: In Progress => Fix Committed
** Tags added: verification-needed
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This is blocked on in-flight SRU bug 1170325.
Thanks
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https://bugs.launchpad.net/bugs/986973
Title:
Facter bug causes puppet to hang
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** Description changed:
[Impact]
"puppet apply" hangs about 20% of the time on affected servers. This
affects users using puppet without a puppetmaster. The normal use case
is to make "puppet apply" run regularly. This causes hung puppet
processes to build up, eventually exhausting sy
(this appears fixed in Saucy, so just the Precise SRU needed)
** Description changed:
+ [Impact]
+
+ "puppet apply" hangs about 20% of the time on affected servers. This
+ affects users using puppet without a puppetmaster. The normal use case
+ is to make "puppet apply" run regularly. This cause
I found a machine exhibiting this problem. On Precise (facter
1.6.5-1ubuntu1), I ran the following experiments:
No patch: "puppet apply" failed 20 out of 100 runs.
Patched both memory.rb and processor.rb: "puppet apply" failed 0 out of 100
runs.
Patched only memory.rb: "puppet apply" failed 23 ou
@Shane
Yes - it appears you are correct and I was in error in my previous
comment. The source file lib/facter/processor.rb does not make use of
Thread::Exclusive (except for Windows), but lib/facter/util/processor.rb
does, so it's necessary to patch that file also.
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Installing the patched version of memory.rb from
https://github.com/puppetlabs/facter/commit/9ff4453b2f0843df887ae1ec2098a4336291df0c
helped reduce the number of puppet hangs that we experience, but we were
still getting hung processes. Attaching strace to a "hung" puppet
process showed a constant
We'll also need this fixed in Saucy before we can commence an SRU. What
is the fix needed in Saucy? Just memory.rb? The same patch? Or
processor.rb as well?
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@Shane
Could you please confirm the patch that you're using on memory.rb, and
confirm that this fixes the problem for you?
I've also been seeing 'puppet apply' hanging via cron, but never figured
out if this was the issue or if this patch fixed it. I've been working
around it with a timeout.
If
It would be fantastic if we could get memory.rb back ported to Precise,
as this is really irritating to need to maintain a separate copy of
memory.rb. Without the patched version, we experience many hangs per
day with 'puppet apply' running via cron. Surprising to see a hang bug
remain for so lon
I just did some digging and found that processor.rb isn't affected in
versions 1.6.5 (precise) or 1.6.9. So, commit
9ff4453b2f0843df887ae1ec2098a4336291df0c is the only necessary one to
cherry-pick here.
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@Robie Basak
The copy of memory.rb that you linked in your update does contain the
fix (removal of "require 'thread'" etc.) I just checked out the tag
1.7.0 and found the commit
(https://github.com/puppetlabs/facter/commit/9ff4453b2f0843df887ae1ec2098a4336291df0c).
Note: that commit is only for me
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