Node 10.4.0 brings the UTxO-HD feature to mainnet. UTxO-HD is a rework of the Consensus layer of the node which allows the UTxO set to be stored in a store that can remain in-memory or be on the disk, lowering the memory requirements of the running node at the cost of some speed. This first version of UTxO-HD provides an LMDB backend, but future releases will incorporate a more fine-tailored backend based on LSM trees. More information on UTxO-HD can be found in the consensus website. It also updates the dependency on Plutus to 1.45.

Users migrating from a previous version of the node should read the migration guide to properly configure the node and convert the database such that a replay from genesis can be avoided.

This version of the node is released as a pre-release, pending community testing. It is not recommended for production use at this point in time.

Known Issues

There is a known bug with the experimental Ouroboros Genesis feature that is not yet recommended for mainnet use.
ChainSync Jumping (CSJ) is not disabled once a node is caught up. This should not affect normal operation of the syncing node, but does risk a DoS attack for the caught-up node. It will be corrected in a future release (Issue IntersectMBO/ouroboros-consensus#1490).

Technical Specification

Documentation

• Cardano Node documentation
  • For details about changes to configuration for UTxO-HD please refer to the Consensus docs on UTxO-HD
  • The getting started guide may also be helpful for general queries.
  • Networking options and related changes are listed on the P2P section
• Cardano CLI
• Internal API docs for ledger, consensus and network
• Compatibility matrix

Sign-off

Changelogs

Detailed Changelogs