chore: remove US history pruner feature toggle (#114014)

pkg/services/featuremgmt/registry.go

@@ -1542,15 +1542,6 @@ var (
 			Owner:        grafanaAlertingSquad,
 			Expression:   "true",
 		},
-		{
-			Name:              "unifiedStorageHistoryPruner",
-			Description:       "Enables the unified storage history pruner",
-			Stage:             FeatureStageGeneralAvailability,
-			Owner:             grafanaSearchAndStorageSquad,
-			HideFromAdminPage: true,
-			HideFromDocs:      true,
-			Expression:        "true", // will be removed soon
-		},
 		{
 			Name:        "azureMonitorLogsBuilderEditor",
 			Description: "Enables the logs builder mode for the Azure Monitor data source",

pkg/services/featuremgmt/toggles_gen.csv

@@ -200,7 +200,6 @@ alertRuleRestore,preview,@grafana/alerting-squad,false,false,false
 infinityRunQueriesInParallel,privatePreview,@grafana/oss-big-tent,false,false,false
 alertingMigrationUI,GA,@grafana/alerting-squad,false,false,true
 alertingImportYAMLUI,GA,@grafana/alerting-squad,false,false,true
-unifiedStorageHistoryPruner,GA,@grafana/search-and-storage,false,false,false
 azureMonitorLogsBuilderEditor,preview,@grafana/partner-datasources,false,false,false
 localeFormatPreference,preview,@grafana/grafana-frontend-platform,false,false,false
 unifiedStorageGrpcConnectionPool,experimental,@grafana/search-and-storage,false,false,false

pkg/services/featuremgmt/toggles_gen.go

@@ -810,10 +810,6 @@ const (
 	// Enables a UI feature for importing rules from a Prometheus file to Grafana-managed rules
 	FlagAlertingImportYAMLUI = "alertingImportYAMLUI"
 
-	// FlagUnifiedStorageHistoryPruner
-	// Enables the unified storage history pruner
-	FlagUnifiedStorageHistoryPruner = "unifiedStorageHistoryPruner"
-
 	// FlagAzureMonitorLogsBuilderEditor
 	// Enables the logs builder mode for the Azure Monitor data source
 	FlagAzureMonitorLogsBuilderEditor = "azureMonitorLogsBuilderEditor"

pkg/services/featuremgmt/toggles_gen.json

@@ -4214,7 +4214,8 @@
       "metadata": {
         "name": "unifiedStorageHistoryPruner",
         "resourceVersion": "1753448760331",
-        "creationTimestamp": "2025-03-17T10:36:38Z"
+        "creationTimestamp": "2025-03-17T10:36:38Z",
+        "deletionTimestamp": "2025-11-17T12:35:33Z"
       },
       "spec": {
         "description": "Enables the unified storage history pruner",

pkg/storage/unified/sql/backend.go

@@ -62,10 +62,6 @@ type BackendOptions struct {
 	IsHA            bool
 	storageMetrics  *resource.StorageMetrics
 
-	// If true, the backend will prune history on write events.
-	// Will be removed once fully rolled out.
-	withPruner bool
-
 	// testing
 	SimulatedNetworkLatency time.Duration // slows down the create transactions by a fixed amount
 
@@ -101,7 +97,6 @@ func NewBackend(opts BackendOptions) (Backend, error) {
 		storageMetrics:          opts.storageMetrics,
 		bulkLock:                &bulkLock{running: make(map[string]bool)},
 		simulatedNetworkLatency: opts.SimulatedNetworkLatency,
-		withPruner:              opts.withPruner,
 		lastImportTimeMaxAge:    opts.LastImportTimeMaxAge,
 	}, nil
 }
@@ -141,7 +136,6 @@ type backend struct {
 	simulatedNetworkLatency time.Duration
 
 	historyPruner resource.Pruner
-	withPruner    bool
 
 	lastImportTimeMaxAge       time.Duration
 	lastImportTimeDeletionTime atomic.Time
@@ -198,11 +192,6 @@ func (b *backend) initLocked(ctx context.Context) error {
 }
 
 func (b *backend) initPruner(ctx context.Context) error {
-	if !b.withPruner {
-		b.log.Debug("using noop history pruner")
-		b.historyPruner = &resource.NoopPruner{}
-		return nil
-	}
 	b.log.Debug("using debounced history pruner")
 	// Initialize history pruner.
 	pruner, err := debouncer.NewGroup(debouncer.DebouncerOpts[resource.PruningKey]{

pkg/storage/unified/sql/server.go

@@ -98,15 +98,12 @@ func NewResourceServer(opts ServerOptions) (resource.ResourceServer, error) {
 
 		isHA := isHighAvailabilityEnabled(opts.Cfg.SectionWithEnvOverrides("database"),
 			opts.Cfg.SectionWithEnvOverrides("resource_api"))
-		//nolint:staticcheck // not yet migrated to OpenFeature
-		withPruner := opts.Features.IsEnabledGlobally(featuremgmt.FlagUnifiedStorageHistoryPruner)
 
 		backend, err := NewBackend(BackendOptions{
 			DBProvider:           eDB,
 			Tracer:               opts.Tracer,
 			Reg:                  opts.Reg,
 			IsHA:                 isHA,
-			withPruner:           withPruner,
 			storageMetrics:       opts.StorageMetrics,
 			LastImportTimeMaxAge: opts.SearchOptions.MaxIndexAge, // No need to keep last_import_times older than max index age.
 		})