core/rawdb/ancient_scheme.go

Type	MOD
Upstream Lines	175
Changed	+5 -0

Add total difficulty to ancient freezer columns

diff --git a/core/rawdb/ancient_scheme.go b/core/rawdb/ancient_scheme.go
index 9ee8f9d3d..417145e29 100644
--- a/core/rawdb/ancient_scheme.go
+++ b/core/rawdb/ancient_scheme.go
@@ -39,6 +39,9 @@ const (
    // ChainFreezerBALTable indicates the name of the freezer block access list
    // table introduced by EIP-7928.
    ChainFreezerBALTable = "bals"
+
+   // ETC: ChainFreezerDifficultyTable indicates the name of the freezer total difficulty table.
+   ChainFreezerDifficultyTable = "diffs"
 )

 // Identifiers of tail groups used by the chain freezer.
@@ -64,6 +67,8 @@ var chainFreezerTableConfigs = map[string]freezerTableConfig{
    ChainFreezerBodiesTable:  {noSnappy: false, tailGroup: ChainFreezerBlockDataGroup},
    ChainFreezerReceiptTable: {noSnappy: false, tailGroup: ChainFreezerBlockDataGroup},
    ChainFreezerBALTable:     {noSnappy: false, tailGroup: ChainFreezerBALGroup},
+   // ETC: total difficulty is retained long-term (not tail-pruned), like headers.
+   ChainFreezerDifficultyTable: {noSnappy: true},
 }

 // freezerTableConfig contains the settings for a freezer table.

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