Yes, it seems to have something with pipelining, so I disabled it with
the following configuration:
Acquire {
http::Pipeline-Depth "0";
};
I have some machines updating with this setting for 2 days without errors now.
The performance impact seems insignificant (I have low RTT connections).
I also had the error occur on official mirrors, local mirrors with apache, and
local mirrors with lighty before this.
I hope this helps fixing the issue.
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https://bugs.launchpad.net/bugs/1801338
Title:
apt fails to properly handle server-side connection closure
Status in apt package in Ubuntu:
Triaged
Status in apt source package in Xenial:
Confirmed
Status in apt source package in Bionic:
Triaged
Status in apt source package in Cosmic:
Triaged
Bug description:
[Impact]
In some cases, apt does not correctly handle server-side connection closure
after a pipeline, and aborts the file being downloaded with an "Undetermined
Error" when the connection has been closed.
[Test case]
This could be seen by running apt build-dep evince on cosmic with a recent
apt with the pipelining fix (such as 1.6.6) against a local mirror running
apache from trusty. It remains to be seen whether this is easily reproducible
for anyone.
[Regression potential]
N/A yet.
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