v20.12.1

Additions and Improvements

• Add some performance optimizations to improve block inclusions rates and attestation accuracy.
• Improve deserialization performance for large data structures, speeding up deserialization up to 1000x for large beacon states.
• Build and publish docker images on OpenJDK 15 (which supports arm64) in addition to OpenJDK 14.
  Java 15 based images are available now for testing with the -jdk15 suffix (e.g consensys/teku:develop-jdk15)
• Add periodic checks to make sure any configured external signer (--validators-external-signer-url) is reachable.
  If the external signing service cannot be reached, errors are logged each time teku fails to contact the external signer.
• Limit the rate at which signature requests are sent to external signers at the start of each epoch.
• Add options to configure keystore and truststore for TLS communication and authentication with external signer.
• Add metrics to track validator participation (previous_epoch_participation_weight, previous_epoch_total_weight).
  This enables accurate tracking of network participation rate.
• Add sync_state event type to events REST API endpoint.
• Improve logging and validation around --initial-state arguments.

Bug Fixes

• Fix an issue where teku could produce aggregate attestations when it should not.
• Fix an issue with --log-file-name-pattern where teku would rotate log files to the default data directory even when a custom data directory was specified using --data-path.
• Break up requests for validator information into batches to avoid sending requests that are too large.
• Fix a bug in our peer selection logic so that we now select a subset of peers randomly in order to guard against
  eclipse attacks.

Downloads

• Available as 20.12.1 on Dockerhub
• Download the binary distribution:
  • tar.gz (sha256: 18277e16fa4dbb821242e1fcad04e4f33373bfa754ccf2dd8ffa2ef0764494d2)
  • zip (sha256: 09d2d77ce81c76bbe71727ff57a5d7a6e517fe99a8d837304f6ff10702c7330c)