Release notes:

Stability improvements

• Reworked catchup code to improve its resiliency with events like running out of sync
• Improved logging and status when catching up, which gives a lot more visibility into what core is doing
• Changed the way we track percentiles reported by the metrics endpoint, with this version percentiles are using a fixed 5 minutes window, this results in percentiles to be a lot more consistent and accurate
• Fixed a hang on shutdown where core was waiting for quorum intersection to complete
• Improved how validators restart, avoiding momentarily not validating (ie, not sending SCP votes) for certain ledgers.
• SCP code code cleanup to make it easier to understand
• Fixed how we compute prefetching metrics
• Fix an issue in experimental metadata generation as certain syscalls are not supported on named pipes
• mempool, don’t bother with transactions that will fail later anyways
• Fixed various test issues - missing tests and flaky test

New features

• Added new SCP metrics to help track if a validator is behind the network or if other validators are behind a validator

Breaking changes

None