avoid alarm for initial rating

checkers/blsRatingsChecker.go

@@ -10,6 +10,7 @@ import (
 const minAlarmDeltaRatingDrop = float64(0.0)
 const maxAlarmDeltaRatingDrop = float64(100.0)
 const jailThreshold = float32(10)
+const startRating = float32(50)
 const ratingDropMessageFormat = "Rating drop detected: temp rating: %0.2f, rating: %0.2f"
 const imminentJailMessageFormat = "Imminent jail: temp rating: %0.2f, rating: %0.2f"
 
@@ -74,6 +75,9 @@ func (checker *blsRatingsChecker) Check(statistics map[string]*core.ValidatorSta
 		if stats.TempRating+checker.alarmDeltaRatingDrop > stats.Rating {
 			continue
 		}
+		if stats.TempRating == startRating && stats.TempRating < stats.Rating {
+			continue
+		}
 
 		log.Debug("found node with rating drop", "checker", checker.name, "bls key", blsKey)
 		results = append(results, core.CheckResponse{

checkers/blsRatingsChecker_test.go

@@ -92,6 +92,10 @@ func TestBlsRatingsChecker_Check(t *testing.T) {
 			TempRating: 50,
 			Rating:     50,
 		},
+		"bls11": {
+			TempRating: 50,
+			Rating:     100,
+		},
 		"": { // this should not be triggered on any test
 			TempRating: 0,
 			Rating:     0,
@@ -140,6 +144,14 @@ func TestBlsRatingsChecker_Check(t *testing.T) {
 		assert.Nil(t, err)
 		assert.Empty(t, response)
 	})
+	t.Run("bls key start rating should not signal", func(t *testing.T) {
+		t.Parallel()
+
+		instance, _ := NewBLSRatingsChecker([]string{"bls11"}, "test", 1.0)
+		response, err := instance.Check(testMap, nil)
+		assert.Nil(t, err)
+		assert.Empty(t, response)
+	})
 	t.Run("bls key rating increase not signal", func(t *testing.T) {
 		t.Parallel()