sigp/lighthouse v4.2.990-exp

EXPERIMENTAL Tree States v4.2.990

on GitHub

Disclaimer

⚠️ You should not run this alpha release supporting mainnet validators ⚠️

If you are looking for the latest Lighthouse release please go to https://github.com/sigp/lighthouse/releases/latest.

Summary

This is an alpha release of upcoming changes to Lighthouse which improve disk usage and state management.

For more information about this family of releases, please see the v3.4.0-tree.1 release notes.

Compared to the previous release the main changes are:

• Capella support
• Freezer database rewritten to use hierarchical diffs (even lower disk usage, around 100 GiB for an archive node)

⚠️ Backwards Compatibility ⚠️

This release is not backwards compatible with stable Lighthouse or prior tree-states releases. It uses a different database schema (v23) for which no automatic upgrade or downgrade is implemented. We intend to implement an automatic upgrade process once the new schema is finalized. A re-sync will be required to run future versions of tree-states.

Please only run this release if you are willing to re-sync now, and again in several weeks/months.

There are several breaking changes to CLI flags:

• The secret dummy flag --unsafe-and-dangerous-mode must be supplied. This is to prevent accidental upgrades to the release by users who don't know what they're getting themselves into. Unfortunately we found that far too many people accidentally ran previous tree-states releases on mainnet.
• The flags --slots-per-restore-point and --historic-state-cache-size are deprecated and no longer necessary due to the freezer database using hierarchical diffs.

Known Issues

Expect a few sharp edges. Some things you may run into:

• aarch64 (ARM) support is currently broken. As a result there are no binaries for ARM.
• The Docker image on DockerHub is for x86_64/modern CPUs only. It was built manually to work around the ARM issue.
• WARN Parent state is not advanced is logged excessively during sync. This is harmless, albeit annoying.
• Block processing is a bit slower than stable Lighthouse.

If you observe any panics, crashes or major performance regressions, please open an issue!

Building from source

Build the v4.2.990-exp tag.

Binaries

See pre-built binaries documentation.

A Docker image for x86_64 only is available on DockerHub as sigp/lighthouse:v4.2.990.

The binaries are signed with Sigma Prime's PGP key: 15E66D941F697E28F49381F426416DC3F30674B0