OffchainLabs/nitro v3.9.8-rc.1

on GitHub

This release is available as a Docker Image on Docker Hub at offchainlabs/nitro-node:TBD
This Docker image specifies default flags in its entrypoint which should be replicated if you're overriding the entrypoint: /usr/local/bin/nitro --validation.wasm.allowed-wasm-module-roots /home/user/nitro-legacy/machines,/home/user/target/machines

Important for any chains still on ArbOS40:

• If you're running a validator without a split validation server (this will be true of most validators), you should instead use the image offchainlabs/nitro-node:TBD-validator which has the extra script /usr/local/bin/split-val-entry.sh as the default entrypoint (no need to override the default entrypoint). This will run both v3.9.5 and v3.7.6 validator workers for you.
• If you are using a split validator, you do not want to use -validator image, you need to run a validator worker on v3.7.6 as well as a worker for v3.9.5
• Arbitrum Chain SDK v0.25.2 (along with consensus_v51.1) is required for ArbOS51

Important for any chains that previously upgraded to ArbOS51 with consensus_v51

• Validator should use configuration option --node.block-validator.pending-upgrade-module-root="" to avoid performing unnecessary work trying to validate consensus_v51.1.

Internal Highlights

• Add configurable cranelift fallback for Stylus compilation: #4535
• Add support to timeboost auctioneer for BidFloorAgent: #4512
• Disable cranelift fallback for non-onchain execution modes: #4543
• Use defer to unlock createBlocksMutex in sequencerWrapper: #4542
• Enhance state management in StopWaiterSafe: #4548
• Use RWLock in StopWaiter: #4552
• Stopwaiter recover: #4550

Full Changelog: v3.9.7...v3.9.8-rc.1