tree 314deef426d9c53a069a2d92b6c4906df23232c2
parent f38eb6de6c352d0de07ff4ddd71c55bc8aab6e3f
author Luca Milanesio <luca.milanesio@gmail.com> 1654149377 -0700
committer Luca Milanesio <luca.milanesio@gmail.com> 1666133400 +0100

Limit the number of changes that can be submitted together

When chaining changes together, the sequence of commits to navigate
was previously unbound, causing the potential explosion to millions
of changes.

The explosion could have also been accidental and caused by the push
of a change with a non-existent branch, which would have resulted
in the full scan of the repository for changes.

Introduce a new Gerrit configuration change.maxSubmittableAtOnce with
a safe default of 32767, which would allow any use case that would have
also worked before this change. Navigating over 32767 changes up to
potentially a huge number of commits would have generated a significant
CPU and memory overload and still not resulted in a submittable
chain of changes anyway.

Release-Notes: Limit the number of changes that can be submitted at once
Bug: Issue 16322
Change-Id: Id71aed2341f72708778395359bb6e4d4c270401c