Release Notes

Recommended CLI Version: v2.3.2+
Docker Link: aptos-node-v1.9.2
Validator Update: Required
Full Node Update: Required

New features and enhancements

General

API

View function API now supports BCS arguments as inputs, allowing inputs to be the same as transaction inputs

Blockchain

Backpressure improvements: detection for when to do backpressure was improved, to avoid sporadically kicking in when system is not overloaded. Backpressure is further tuned to be more aggressive under load, to make sure latency is kept low, and making the blockchain more responsive.

Networking

Increased the number of outbound connections from 4 to 6 for fullnodes. This improves load balancing of network resources under load.

State sync

Improved the peer selection algorithm for data requests by leveraging peer monitoring metadata, latency and network topology information.
Implemented multi-fetch for data requests, allowing nodes to fetch data from multiple peers concurrently. This improves reliability in the face of failures and transient outages.
Improved the data pre-fetcher to more efficiently tolerate head of line blocking.
Improved the state sync execution pipeline by adopting 3 pipelined phases (instead of 2). This improves syncing throughput and performance under load.

[AIP-50] Change commission rates in delegation pools: Allows the pool owner to change the commission rate after delegation pool creation.
- Requires enabling feature flag commission_change_delegation_pool
[AIP-52] Automated Account Creation for Sponsored Transactions
- Requires enabling feature flag sponsored_automatic_account_creation
We have variety of improvements targeting gas charging and predictable block execution duration. Together they should improve fairness of gas charging, improve latency when there is high load, as well as reduce gas prices most transactions (up to 80% for larger transacitons!):