Wrote up https://bugs.launchpad.net/swift/+bug/1843816 to describe the issue; tl;dr is that python's http.client/httplib got more picky about sending only RFC-compliant HTTP requests, but Swift's proxy was happy to accept non-compliant query strings and try to forward them on to backend servers.

Fix for master is up at https://review.opendev.org/#/c/681875/, and a backport for pike is up at https://review.opendev.org/#/c/681879/. Once I see passing checks there, I'll propose backports for everyone in between, plus ocata.

Tim

On Wed, 2019-09-11 at 06:43 +0000, A mailing list for the OpenStack Stable Branch test reports. wrote:

Build failed.

• build-openstack-sphinx-docs

https://zuul.opendev.org/t/openstack/build/d7030406f5224d78baebbe5dbe80b4d5 : SUCCESS in 6m 39s

• openstack-tox-py27

https://zuul.opendev.org/t/openstack/build/a4ee29fb61684505995fda21718fcd89 : FAILURE in 7m 15s

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