feat(f3): integrate MapReduce cache

CHANGELOG.md

@@ -12,6 +12,7 @@
 - chore: return `method not supported` via Gateway when /v2 isn't supported by the backend ([filecoin-project/lotus#13121](https://github.com/filecoin-project/lotus/pull/13121))
 - chore: disable F3 participation via gateway ([filecoin-project/lotus#13123](https://github.com/filecoin-project/lotus/pull/13123)
 - chore: increase the F3 GMessage buffer size to 1024 ([filecoin-project/lotus#13126](https://github.com/filecoin-project/lotus/pull/13126))
+- feat(f3): integrate cached MapReduce from go-hamt-ipld, which improves performance of F3 power table calculation by 6-10x ([filecoin-project/lotus#13134](https://github.com/filecoin-project/lotus/pull/13134))
 
 # Node v1.33.0 / 2025-05-08
 The Lotus v1.33.0 release introduces experimental v2 APIs with F3 awareness, featuring a new TipSet selection mechanism that significantly enhances how applications interact with the Filecoin blockchain. This release candidate also adds F3-aware Ethereum APIs via the /v2 endpoint.  All of the /v2 APIs implement intelligent fallback mechanisms between F3 and Expected Consensus and are exposed through the Lotus Gateway.
@@ -30,7 +31,7 @@ The Lotus V2 APIs introduce a powerful new TipSet selection mechanism that signi
 > [!NOTE]
 > V2 APIs are highly experimental and subject to change without notice.
 
-See [Filecoin v2 APIs docs](https://filoznotebook.notion.site/Filecoin-V2-APIs-1d0dc41950c1808b914de5966d501658) for an in-depth overview. /v2 APIs are exposed through Lotus Gateway. 
+See [Filecoin v2 APIs docs](https://filoznotebook.notion.site/Filecoin-V2-APIs-1d0dc41950c1808b914de5966d501658) for an in-depth overview. /v2 APIs are exposed through Lotus Gateway.
 
 This work was primarily done in ([filecoin-project/lotus#13003](https://github.com/filecoin-project/lotus/pull/13003)), ([filecoin-project/lotus#13027](https://github.com/filecoin-project/lotus/pull/13027)), ([filecoin-project/lotus#13034](https://github.com/filecoin-project/lotus/pull/13034)), ([filecoin-project/lotus#13075](https://github.com/filecoin-project/lotus/pull/13075)), ([filecoin-project/lotus#13066](https://github.com/filecoin-project/lotus/pull/13066))
 

chain/actors/builtin/power/actor.go.template

@@ -105,6 +105,7 @@ type State interface {
 	// before returning the actor.
 	ForEachClaim(cb func(miner address.Address, claim Claim) error, onlyEligible bool) error
 	ClaimsChanged(State) (bool, error)
+    CollectEligibleClaims(cacheInOut *builtin{{.latestVersion}}.MapReduceCache) ([]builtin{{.latestVersion}}.OwnedClaim, error)
 
 	// Testing or genesis setup only
 	SetTotalQualityAdjPower(abi.StoragePower) error

chain/actors/builtin/power/power.go

@@ -189,6 +189,7 @@ type State interface {
 	// before returning the actor.
 	ForEachClaim(cb func(miner address.Address, claim Claim) error, onlyEligible bool) error
 	ClaimsChanged(State) (bool, error)
+	CollectEligibleClaims(cacheInOut *builtin16.MapReduceCache) ([]builtin16.OwnedClaim, error)
 
 	// Testing or genesis setup only
 	SetTotalQualityAdjPower(abi.StoragePower) error

chain/actors/builtin/power/state.go.template

@@ -26,6 +26,7 @@ import (
 	power{{.v}} "github.com/filecoin-project/go-state-types/builtin{{.import}}power"
 	adt{{.v}} "github.com/filecoin-project/go-state-types/builtin{{.import}}util/adt"
 {{end}}
+    builtin{{.latestVersion}} "github.com/filecoin-project/go-state-types/builtin"
 )
 
 var _ State = (*state{{.v}})(nil)
@@ -147,6 +148,27 @@ func (s *state{{.v}}) ListAllMiners() ([]address.Address, error) {
 	return miners, nil
 }
 
+func (s *state{{.v}}) CollectEligibleClaims(cacheInOut *builtin{{.latestVersion}}.MapReduceCache) ([]builtin{{.latestVersion}}.OwnedClaim, error) {
+{{if (ge .v 16)}}
+	return s.State.CollectEligibleClaims(s.store, cacheInOut)
+{{else}}
+	var res []builtin{{.latestVersion}}.OwnedClaim
+	err := s.ForEachClaim(func(miner address.Address, claim Claim) error {
+		res = append(res, builtin{{.latestVersion}}.OwnedClaim{
+			Address:         miner,
+			RawBytePower:    claim.RawBytePower,
+			QualityAdjPower: claim.QualityAdjPower,
+		})
+		return nil
+	}, true)
+	if err != nil {
+		return nil, fmt.Errorf("collecting claims: %w", err)
+	}
+	return res, nil
+{{end}}
+}
+
+
 func (s *state{{.v}}) ForEachClaim(cb func(miner address.Address, claim Claim) error, onlyEligible bool) error {
 	claims, err := s.claims()
 	if err != nil {