Release

Release Name: 7.52.0

Spec Version: 52

Client Version: 7.0.0

Key Changes:

This release includes Ethy gadget Witness message pruning based on the finalized block number.

What can be expected with this change

• Redundant network gossip activity should be significantly reduced.
• Should provide fixes for the current peer drop issue.
• All the existing gossip Witness messages would be discarded due to the new format
• There is a chance of discarding witnesses before they can form the proof if goes out of the live window. But under normal conditions this should not happen. A separate mechanism to handle these scenarios will be introduced later.

Note - at post deployment, need to make sure at least 66% of the active validators are upgraded to the new image. otherwise could halt the proof formation due to not being able to reach consensus.

PRs included:

Client Changes:

• Yes
• No

Runtime Changes:

• Yes
• No

Storage Changes:

Changed:

Extrinsic Changes:

Added:

Changed:

Event Changes:

Added:

Error Messages:

Added:

Storage Migrations:

Added:

Removed:

Implementation details

• Add block_number to Witness
• Active validators now include finalized block number(that the proof request was made) in the Witness message
• Define WINDOW_SIZE = 90 or the live window, proof needs to be generated within this window. approximately ~6mins.
• Update GossipValidator to include a reference to Backend
• Any incoming Witness gossip messages that are outside the live window would be discarded.
• change REBROADCAST_AFTER to 3 mins, allowing a second rebroadcast within the live window
• Increase MAX_COMPLETE_EVENT_CACHE to 500