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### Summary This PR optimizes gap sync bandwidth usage by skipping body requests for non-archive nodes. Bodies are unnecessary during gap sync when the node doesn't maintain full block history, while archive nodes continue to request bodies to preserve complete history. It reduces bandwidth consumption and database size significantly for typical validator/full nodes. Additionally added some gap sync statistics for observability: - Introduced `GapSyncStats` to track bandwidth usage: header bytes, body bytes, justification bytes - Logged on gap sync completion to provide visibility into bandwidth savings --------- Co-authored-by: sistemd <enntheprogrammer@gmail.com> Co-authored-by: cmd[bot] <41898282+github-actions[bot]@users.noreply.github.com> (cherry picked from commit e23e645)
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lrubasze
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Mar 6, 2026
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Backport #10752 into
stable2603from lrubasze.This PR significantly optimize DB and network usage when Gap sync is used (bodies are no longer requested). It also reduces gap sync duration.
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