加入T-Digest算法

增加阈值日志

ad-engine-service/src/main/java/com/tzld/piaoquan/ad/engine/service/predict/model/threshold/ScoreV2ThresholdPredictModel.java

@@ -107,7 +107,11 @@ public class ScoreV2ThresholdPredictModel extends ThresholdPredictModel {
         result.put("threshold", threshold);
         result.put("score", maxItem == null ? -1 : maxItem.getScore());
         result.put("ad_predict", adPredict);
-        log.info("svc=predict modelName=modelV2 mergingDigestThreshold={}", ThresholdModelContainer.getThresholdByTDigest(position));
+        try {
+            log.info("svc=predict modelName=modelV2 mergingDigestThreshold={}", ThresholdModelContainer.getThresholdByTDigest(position));
+        }catch (Exception e){
+
+        }
 
         return result;
     }