github.com/ava-labs/avalanchego

This update is backwards compatible with v1.7.0. Please see the expected update times in the v1.7.0 release.

Coreth

• Reduced fee estimate volatility.

Consensus

• Fixed vote bubbling for unverified block chits.

This upgrade adds support for issuing multiple atomic transactions into a single block and directly transferring assets between the P-chain and the C-chain.

The changes in the upgrade go into effect at 1 PM EST, December 2nd 2021 on Mainnet. One should upgrade their node before the changes go into effect, otherwise they may experience loss of uptime.

All nodes should upgrade before 1 PM EST, December 2nd 2021.

Networking

• Added peer uptime reports as metrics.
• Removed IP rate limiting over local networks.

PlatformVM

• Enabled AtomicTxs to be issued into StandardBlocks and deprecated AtomicBlocks.
• Added the ability to export/import AVAX to/from the C-chain.

Coreth

• Enabled multiple AtomicTxs to be issued per block.
• Added the ability to export/import AVAX to/from the P-chain.
• Updated dynamic fee calculations.

ProposerVM

• Removed storage of undecided blocks.

RPCChainVM

• Added support for metrics to be reported by plugin VMs.

Configs

• Removed --snow-epoch-first-transition and snow-epoch-duration as command line arguments.

This version is backwards compatible to v1.6.0. It is optional, but encouraged.

Bootstrapping

• Drop inbound messages to a chain if that chain is in the execution phase of bootstrapping.
• Print beacon nodeIDs upon failure to connect to them.

Metrics

• Added avalanche_{ChainID}_bootstrap_finished, which is 1 if the chain is done bootstrapping, 0 otherwise.

APIs

• Added info.uptime API call that attempts to report the network's view of the local node.
• Added observedUptime to each peer's result in info.peers.

Network

• Added reported uptime to pong messages to be able to better track a local node's uptime as viewed by the network.
• Refactored request timeout registry to avoid a potential race condition.

This version is backwards compatible to v1.6.0. It is optional, but encouraged.

Config

• Added flag throttler-inbound-bandwidth-refill-rate, which specifies the max average inbound bandwidth usage of a peer.
• Added flag throttler-inbound-bandwidth-max-burst-size, which specifies the max inbound bandwidth usage of a peer.

Networking

• Updated peerlist gossiping to use the same mechanism as other gossip calls.
• Added inbound message throttling based on recent bandwidth usage.

Metrics

• Updated avalanche_{ChainID}_handler_gossip_{count,sum} to avalanche_{ChainID}_handler_gossip_request_{count,sum}.
• Updated avalanche_{ChainID}_lat_get_accepted_{count,sum} to avalanche_{ChainID}_lat_accepted_{count,sum}.
• Updated avalanche_{ChainID}_lat_get_accepted_frontier_{count,sum} to avalanche_{ChainID}_lat_accepted_frontier_{count,sum}.
• Updated avalanche_{ChainID}_lat_get_ancestors_{count,sum} to avalanche_{ChainID}_lat_multi_put_{count,sum}.
• Combined avalanche_{ChainID}_lat_pull_query_{count,sum} and avalanche_{ChainID}_lat_push_query_{count,sum} to avalanche_{ChainID}_lat_chits_{count,sum}.
• Added avalanche_{ChainID}_app_response_{count,sum}.
• Added avalanche_network_bandwidth_throttler_inbound_acquire_latency_{count,sum}
• Added avalanche_network_bandwidth_throttler_inbound_awaiting_acquire
• Added avalanche_P_vm_votes_won
• Added avalanche_P_vm_votes_lost

Indexer

• Added method GetContainerByID to client implementation.
• Client methods now return []byte rather than string representations of a container.

C-Chain

• Updated Geth dependency to 1.10.11.
• Added a new admin API for updating the log level and measuring performance.
• Added a new --allow-unprotected-txs flag to allow issuance of transactions without EIP-155 replay protection.

Subnet & Custom VMs

• Ensured that all possible chains are run in --staking-enabled=false networks.

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