triedb/pathdb: fix index proress

triedb/pathdb/database_test.go

@@ -974,6 +974,13 @@ func TestDatabaseIndexRecovery(t *testing.T) {
 			t.Fatalf("Unexpected state history found, %d", i)
 		}
 	}
+	remain, err := env.db.IndexProgress()
+	if err != nil {
+		t.Fatalf("Failed to obtain the progress, %v", err)
+	}
+	if remain == 0 {
+		t.Fatalf("Unexpected progress remain, %d", remain)
+	}
 
 	// Apply new states on top, ensuring state indexing can respond correctly
 	for i := dIndex + 1; i < len(roots); i++ {
@@ -981,6 +988,13 @@ func TestDatabaseIndexRecovery(t *testing.T) {
 			panic(fmt.Errorf("failed to update state changes, err: %w", err))
 		}
 	}
+	remain, err = env.db.IndexProgress()
+	if err != nil {
+		t.Fatalf("Failed to obtain the progress, %v", err)
+	}
+	if remain != 0 {
+		t.Fatalf("Unexpected progress remain, %d", remain)
+	}
 	waitIndexing(env.db)
 
 	// Ensure the truncated state histories become accessible

triedb/pathdb/history_indexer.go

@@ -372,7 +372,7 @@ func (i *indexIniter) remain() uint64 {
 		last, indexed := i.last.Load(), i.indexed.Load()
 		if last < indexed {
 			log.Warn("State indexer is in recovery", "indexed", indexed, "last", last)
-			return 0
+			return indexed - last
 		}
 		return last - indexed
 	}