v7.1.0

[prestonvanloon]

v7.1.0 - 2025-12-10

This release includes several key features/fixes. If you are running v7.0.0 then you should update to v7.0.1 or later and remove the flag --disable-last-epoch-targets.

Release highlights:

• Backfill is now supported in Fulu. Backfill from checkpoint sync now supports data columns. Run with --enable-backfill when using checkpoint sync.
• A new node configuration to custody enough data columns to reconstruct blobs. Use flag --semi-supernode to custody at least 50% of the data columns.
• Critical fixes in attestation processing.

A post mortem doc with full details on the mainnet attestation processing issue from December 4th is expected in the coming days.

Added

• add fulu support to light client processing. [PR]
• Record data column gossip KZG batch verification latency in both the pooled worker and fallback paths so the beacon_kzg_verification_data_column_batch_milliseconds histogram reflects gossip traffic, annotated with path labels to distinguish the sources. [PR]
• Implement Gloas state. [PR]
• Add initial configs for the state-diff feature. [PR]
• Add kv functions for the state-diff feature. [PR]
• Add supported version for fork versions. [PR]
• prometheus metric gossip_attestation_verification_milliseconds to track attestation gossip topic validation latency. [PR]
• Integrate state-diff into State(). [PR]
• Implement Gloas fork support in consensus-types/blocks with factory methods, getters, setters, and proto handling. [PR]
• Integrate state-diff into HasState(). [PR]
• Added --semi-supernode flag to custody half of a super node's datacolumn requirements but allowing for reconstruction for blob retrieval. [PR]
• Data column backfill. [PR]
• Backfill metrics for columns: backfill_data_column_sidecar_downloaded, backfill_data_column_sidecar_downloaded_bytes, backfill_batch_columns_download_ms, backfill_batch_columns_verify_ms. [PR]
• prometheus summary gossip_data_column_sidecar_arrival_milliseconds to track data column sidecar arrival latency since slot start. [PR]

Changed

• Improve readability in slashing import and remove duplicated code. [PR]
• Use dependent root instead of target when possible. [PR]
• Changed --subscribe-all-data-subnets flag to --supernode and aliased --subscribe-all-data-subnets for existing users. [PR]
• Use explicit slot component timing configs. [PR]
• Downgraded log level from INFO to DEBUG on PrepareBeaconProposer updated fee recipients. [PR]
• Change the logging behaviour of Updated fee recipients to only log count of validators at Debug level and all validator indices at Trace level. [PR]
• Stop emitting payload attribute events during late block handling when we are not proposing the next slot. [PR]
• Initialize the ExecutionRequests field in gossip block map. [PR]
• Avoid redundant WithHttpEndpoint when JWT is provided. [PR]
• Removed dead slot parameter from blobCacheEntry.filter. [PR]
• Added log prefix to the genesis package. [PR]
• Added log prefix to the params package. [PR]
• WithGenesisValidatorsRoot: Use camelCase for log field param. [PR]
• Move Origin checkpoint found in db from WARN to INFO, since it is the expected behaviour. [PR]
• backfill metrics that changed name and/or histogram buckets: backfill_batch_time_verify -> backfill_batch_verify_ms, backfill_batch_time_waiting -> backfill_batch_waiting_ms, backfill_batch_time_roundtrip -> backfill_batch_roundtrip_ms, backfill_blocks_bytes_downloaded -> backfill_blocks_downloaded_bytes, backfill_batch_time_verify -> backfill_batch_verify_ms, backfill_batch_blocks_time_download -> backfill_batch_blocks_download_ms, backfill_batch_blobs_time_download -> backfill_batch_blobs_download_ms, backfill_blobs_bytes_downloaded -> backfill_blocks_downloaded_bytes. [PR]
• Move the "Not enough connected peers" (for a given subnet) from WARN to DEBUG. [PR]
• blobsDataFromStoredDataColumns: Ask the use to use the --supernode flag and shorten the error mesage. [PR]
• Introduced flag --ignore-unviable-attestations (replaces and deprecates --disable-last-epoch-targets) to drop attestations whose target state is not viable; default remains to process them unless explicitly enabled. [PR]

Removed

• Remove validator cross-client from end-to-end tests. [PR]
• NUMBER_OF_COLUMNS configuration (not in the specification any more, replaced by a preset). [PR]
• MAX_CELLS_IN_EXTENDED_MATRIX configuration (not in the specification any more). [PR]

Fixed

• Nil check for block if it doesn't exist in the DB in fetchOriginSidecars. [PR]
• Fix proposals progress bar count #16020. [PR]
• Move BlockGossipReceived event to the end of gossip validation. [PR]
• Fix state diff repetitive anchor slot bug. [PR]
• Check the JWT secret length is exactly 256 bits (32 bytes) as per Engine API specification. [PR]
• http_error_count now matches the other cases by listing the endpoint name rather than the actual URL requested. This improves metrics cardinality. [PR]
• Fix array out of bounds in static analyzer. [PR]
• fixes E2E tests to be able to start from Electra genesis fork or future forks. [PR]
• Use head state to validate attestations for old blocks if they are compatible. [PR]

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This discussion was created from the release v7.1.0.