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feat(lean): harden syncer and prune applied pending blocks #1241

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feat(lean): harden syncer and prune applied pending blocks #1241

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6ededd8
lean: harden sync handoff/fanout and prune applied pending blocks
KolbyML Feb 24, 2026
44a9ed5
feat(lean): prune applied pending blocks and clean lint
KolbyML Feb 24, 2026
18c199a
feat(lean): harden backfill checkpoint queue guards
KolbyML Feb 24, 2026
9f791d4
feat(lean): gate sync handoff on finalized lag
KolbyML Feb 24, 2026
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19 changes: 15 additions & 4 deletions bin/ream/src/main.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1428,11 +1428,22 @@ mod tests {
head_state_1.slot, head_state_1.latest_finalized.slot
);

let head_slot_delta = head_state.slot.abs_diff(head_state_1.slot);
let finalized_slot_lag = head_state_1
.latest_finalized
.slot
.saturating_sub(head_state.latest_finalized.slot);
assert!(
head_state.slot == head_state_1.slot,
"Node 3 is too far behind Node 1. Node 3: {}, Node 1: {}",
head_state.slot,
head_state_1.slot
head_slot_delta <= 2,
"Node 3 head diverged too much from Node 1. Node 3: {node_3_slot}, Node 1: {node_1_slot}, delta: {head_slot_delta}",
node_3_slot = head_state.slot,
node_1_slot = head_state_1.slot
);
assert!(
finalized_slot_lag <= 4,
"Node 3 finalized slot lagged too far behind Node 1. Node 3: {node_3_finalized}, Node 1: {node_1_finalized}, lag: {finalized_slot_lag}",
node_3_finalized = head_state.latest_finalized.slot,
node_1_finalized = head_state_1.latest_finalized.slot
);
});
}
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