cor...@inaugust.com (James E. Blair) writes:

> Hi,
>
> We need to merge a backwards incompatible change to Zuul master.
>
> The change is: https://review.openstack.org/482856 and it makes Gerrit
> label entries case sensitive.  Unfortunately, some combinations of
> Gerrit versions and underlying database configurations make this both
> necessary and difficult to handle seamlessly.
>
> This will affect both installations continuously delivered from git
> master, as well as those that are upgraded to the latest releases.
>
> The complexity of this situation leaves us few options other than to
> make this change and minimize the impact by isolating it and providing
> an upgrade plan.
>
> The upgrade plan is the same regardless of whether you run Zuul
> continuously deployed from master or releases.
>
> Upgrade Procedure
> -----------------
>
> The latest release of Zuul, as of this writing, is 2.5.2.  It treats all
> Gerrit labels as case insensitive, however, if a label is capitalized in
> Zuul's layout configuration with this version, typical gate pipelines
> may not function correctly.  Therefore:
>
> 1) Prepare, *but do not merge*, a patch to change the case of all Gerrit
> labels in layout.yaml.  Typically, this would mean changing instances of
> "verified:" to "Verified:" or "workflow:" to "Workflow:".
>
> 2) Next Tuesday, September 26, we will merge
> https://review.openstack.org/482856 and release version 2.6.0, which
> switches to the case-sensitive behavior (and contains no other
> substantive changes).  Once this change is merged to the master branch
> and and the new version of Zuul is released is released, prepare to
> upgrade.
>
> 3) Merge the change prepared in step 1, then upgrade to 2.6.0 (or the
> master branch tip) immediately afterword and restart Zuul.

We have merged the change referenced above, and released Zuul 2.6.0.

-Jim

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