cmcfarlen opened a new pull request, #13189:
URL: https://github.com/apache/trafficserver/pull/13189
## Status
**Draft / discussion only — not proposed for merge as-is.**
This branch is the output of a trial exercise to answer the question:
*"How painful would it be to ship 10.2.0 from a master with all
backward-incompatible changes reverted?"*
It builds cleanly. It is not a release candidate.
## What's in here
13 reverts + 1 build-tooling fix:
| # | PR | What | Why |
|---|---|---|---|
| 1 | #13090 | Config reload error reporting | Depends on #12892 (in 11-Dev)
|
| 2 | #13110 | `_reload` directive | Depends on #12892 |
| 3 | #13117 | Cap TLS cert compression length | Depends on #13088 |
| 4 | #13088 | TLS Cert Compression (RFC 8879) | Depends on
`config/ssl_multicert.h` (in 11-Dev #12755) |
| 5 | #13070 | plugin.config → plugin.yaml | **Incompatible-labeled**;
depends on `config_result.h` (in 11-Dev) |
| 6 | #13048 | Coverity fix on storage | Depends on #13031 |
| 7 | #13031 | storage.config + volume.config → storage.yaml |
**Incompatible-labeled** |
| 8 | #12998 | Parallel SSL cert load | Depends on #12755 (in 11-Dev) |
| 9 | #12988 | Publish remap table after initial load | Surface conflict on
ReverseProxy.cc with #12997 |
| 10 | #12997 | remap.yaml support | Depends on ConfigRegistry from #12892
(in 11-Dev) |
| 11 | #12983 | **11-Dev merge** (with -m 1) | Brings in #11135, #11157,
#12670, #12755, #12892, #12896, etc. |
| 12 | #12913 | Master-side bump to 11.0.0 | **Incompatible-labeled** |
| 13 | #12404 | cqssrt log field for TLS resumption | Restored function
references `m_http_sm` which #13123 renamed to `m_data` |
| — | tools | Skip files staged for deletion in cmake-format.sh |
Build-tooling fix, useful regardless |
The last one is a real upstream improvement worth landing on its own;
the rest are trial exploration.
## What this trial proved
- The mechanical revert path is **tractable** with the right dependency
order.
v1 of this trial took ~2.5 hours and didn't finish (failed to build); v2
with the dependency chain mapped took ~90 minutes and **builds cleanly**.
- The realistic cost is **1–2 days** of focused work for production, not
the 1–2 weeks initially feared.
- The dominant cost is **not technical** — it's the contributor
conversations about deferred features (#12892, #13070, #12997, #13088,
#12998 are all significant work).
## What this trial does NOT prove
- Tests have not been run on this branch.
- Three months of `Incompatible`-tagged + un-tagged behavior changes
exist on master that may not be captured here.
- This branch loses several useful features (plugin.yaml, remap.yaml,
TLS cert compression, parallel SSL cert load, the new config-reload
framework). Production would need to decide which to defer to 11.0.0
and which to re-implement compat-friendly versions of for 10.2.0.
## Detailed notes
See the comment below for the full execution log including conflict
resolution decisions, build verification, and effort breakdown.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
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