reno/releasenotes/notes/ignore-null-merges-56b7a8ed9b20859e.yaml
Doug Hellmann bd6fecc858 ignore null-merges
OpenStack used to use null-merges to bring final release tags from
stable branches back into the master branch. This confuses the regular
traversal because it makes that stable branch appear to be part of
master and/or the later stable branch. Update the scanner so that when
it hit one of those merge commits, it skips it and take the first parent
so it continues to traverse the branch being scanned.

Change-Id: I90722a3946f691e8f58a52e68ee455d6530f047a
Closes-Bug: #1695057
Signed-off-by: Doug Hellmann <doug@doughellmann.com>
2017-06-02 10:18:04 -04:00

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YAML

---
features:
- |
By default, reno now ignores "null" merge commits that bring in
tags from other threads. The new configuration option
``ignore_null_merges`` controls this behavior. Setting the flag to
False restores the previous behavior in which the null-merge
commits were traversed like any other merge commit.
upgrade:
- |
The new configuration option ``ignore_null_merges`` causes the
scanner to ignore merge commits with no changes when one of the
parents being merged in has a release tag on it.
fixes:
- |
This release fixes a problem with the scanner that may have caused
it to stop scanning a branch prematurely when the tag from another
branch had been merged into the history.