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name: Release issue template
about: Tracking issue for new releases
title: Polkadot {{ env.VERSION }} Release checklist
---
# Release Checklist
This is the release checklist for Polkadot {{ env.VERSION }}. **All** following
checks should be completed before publishing a new release of the
Polkadot/Kusama/Westend runtime or client. The current release candidate can be
checked out with `git checkout release-{{ env.VERSION }}`
These checks should be performed on the codebase prior to forking to a release-
candidate branch.
- [ ] Verify [`spec_version`](#spec-version) has been incremented since the
last release for any native runtimes from any existing use on public
(non-private/test) networks.
- [ ] Verify previously [completed migrations](#old-migrations-removed) are
removed for any public (non-private/test) networks.
- [ ] Verify pallet and [extrinsic ordering](#extrinsic-ordering) has stayed
the same. Bump `transaction_version` if not.
- [ ] Verify new extrinsics have been correctly whitelisted/blacklisted for
[proxy filters](#proxy-filtering).
- [ ] Verify [benchmarks](#benchmarks) have been updated for any modified
runtime logic.
The following checks can be performed after we have forked off to the release-
candidate branch or started an additional release candidate branch (rc-2, rc-3, etc)
- [ ] Verify [new migrations](#new-migrations) complete successfully, and the
runtime state is correctly updated for any public (non-private/test)
networks.
- [ ] Verify [Polkadot JS API](#polkadot-js) are up to date with the latest
runtime changes.
- [ ] Push runtime upgrade to Westend and verify network stability.
### All Releases
- [ ] Check that the new client versions have [run on the network](#burn-in)
without issue for 12 hours.
- [ ] Check that a draft release has been created at
https://github.com/paritytech/polkadot/releases with relevant [release
notes](#release-notes)
- [ ] Check that [build artifacts](#build-artifacts) have been added to the
draft-release
## Notes
### Burn In
Ensure that Parity DevOps has run the new release on Westend, Kusama, and
Polkadot validators for at least 12 hours prior to publishing the release.
### Build Artifacts
Add any necessary assets to the release. They should include:
- Linux binary
- GPG signature of the Linux binary
- SHA256 of binary
- Source code
- Wasm binaries of any runtimes
### Release notes
The release notes should list:
- The priority of the release (i.e., how quickly users should upgrade) - this is
based on the max priority of any *client* changes.
- Which native runtimes and their versions are included
- The proposal hashes of the runtimes as built with
[srtool](https://gitlab.com/chevdor/srtool)
- Any changes in this release that are still awaiting audit
The release notes may also list:
- Free text at the beginning of the notes mentioning anything important
regarding this release
- Notable changes (those labelled with B[1-9]-* labels) separated into sections
### Spec Version
A runtime upgrade must bump the spec number. This may follow a pattern with the
client release (e.g. runtime v12 corresponds to v0.8.12, even if the current
runtime is not v11).
### Old Migrations Removed
Any previous `on_runtime_upgrade` functions from old upgrades must be removed
to prevent them from executing a second time. The `on_runtime_upgrade` function
can be found in `runtime/<runtime>/src/lib.rs`.
### New Migrations
Ensure that any migrations that are required due to storage or logic changes
are included in the `on_runtime_upgrade` function of the appropriate pallets.
### Extrinsic Ordering
Offline signing libraries depend on a consistent ordering of call indices and
functions. Compare the metadata of the current and new runtimes and ensure that
the `module index, call index` tuples map to the same set of functions. In case
of a breaking change, increase `transaction_version`.
To verify the order has not changed:
1. Download the latest release-candidate binary either from the draft-release
on Github, or
[AWS](https://releases.parity.io/polkadot/x86_64-debian:stretch/{{ env.VERSION }}-rc1/polkadot)
(adjust the rc in this URL as necessary).
2. Run the release-candidate binary using a local chain:
`./polkadot --chain=polkadot-local` or `./polkadot --chain=kusama-local`
3. Use [`polkadot-js-tools`](https://github.com/polkadot-js/tools) to compare
the metadata:
- For Polkadot: `docker run --network host jacogr/polkadot-js-tools metadata wss://rpc.polkadot.io ws://localhost:9944`
- For Kusama: `docker run --network host jacogr/polkadot-js-tools metadata wss://kusama-rpc.polkadot.io ws://localhost:9944`
4. Things to look for in the output are lines like:
- `[Identity] idx 28 -> 25 (calls 15)` - indicates the index for `Identity` has changed
- `[+] Society, Recovery` - indicates the new version includes 2 additional modules/pallets.
- If no indices have changed, every modules line should look something like `[Identity] idx 25 (calls 15)`
Note: Adding new functions to the runtime does not constitute a breaking change
as long as they are added to the end of a pallet (i.e., does not break any
other call index).
### Proxy Filtering
The runtime contains proxy filters that map proxy types to allowable calls. If
the new runtime contains any new calls, verify that the proxy filters are up to
date to include them.
### Benchmarks
There are three benchmarking machines reserved for updating the weights at
release-time. To initialise a benchmark run for each production runtime
(westend, kusama, polkadot):
* Go to https://gitlab.parity.io/parity/polkadot/-/pipelines?page=1&scope=branches&ref=master
* Click the link to the last pipeline run for master
* Start each of the manual jobs:
* 'update_westend_weights'
* 'update_polkadot_weights'
* 'update_kusama_weights'
* When these jobs have completed (it takes a few hours), a git PATCH file will
be available to download as an artifact.
* On your local machine, branch off master
* Download the patch file and apply it to your branch with `git patch patchfile.patch`
* Commit the changes to your branch and submit a PR against master
* The weights should be (Currently manually) checked to make sure there are no
big outliers (i.e., twice or half the weight).