load a full finality worth of state during warmup

blockstore/splitstore/splitstore_test.go

@@ -24,6 +24,7 @@ import (
 func init() {
 	CompactionThreshold = 5
 	CompactionBoundary = 2
+	WarmupBoundary = 0
 	logging.SetLogLevel("splitstore", "DEBUG")
 }
 

blockstore/splitstore/splitstore_warmup.go

@@ -10,9 +10,15 @@ import (
 	cid "github.com/ipfs/go-cid"
 
 	bstore "github.com/filecoin-project/lotus/blockstore"
+	"github.com/filecoin-project/lotus/build"
 	"github.com/filecoin-project/lotus/chain/types"
 )
 
+var (
+	// WarmupBoundary is the number of epochs to load state during warmup.
+	WarmupBoundary = build.Finality
+)
+
 // warmup acuiqres the compaction lock and spawns a goroutine to warm up the hotstore;
 // this is necessary when we sync from a snapshot or when we enable the splitstore
 // on top of an existing blockstore (which becomes the coldstore).
@@ -44,11 +50,12 @@ func (s *SplitStore) warmup(curTs *types.TipSet) error {
 // objects are written in batches so as to minimize overhead.
 func (s *SplitStore) doWarmup(curTs *types.TipSet) error {
 	epoch := curTs.Height()
+	boundaryEpoch := epoch - WarmupBoundary
 	batchHot := make([]blocks.Block, 0, batchSize)
 	count := int64(0)
 	xcount := int64(0)
 	missing := int64(0)
-	err := s.walkChain(curTs, epoch, epoch+1, // we don't load messages/receipts in warmup
+	err := s.walkChain(curTs, boundaryEpoch, epoch+1, // we don't load messages/receipts in warmup
 		func(c cid.Cid) error {
 			if isUnitaryObject(c) {
 				return errStopWalk