akshayrai commented on a change in pull request #4768: [TE] deactivate metrics 
instead of deleting
URL: https://github.com/apache/incubator-pinot/pull/4768#discussion_r341405496
 
 

 ##########
 File path: 
thirdeye/thirdeye-pinot/src/main/java/org/apache/pinot/thirdeye/auto/onboard/AutoOnboardPinotMetadataSource.java
 ##########
 @@ -315,16 +305,24 @@ private void checkMetricChanges(String dataset, 
DatasetConfigDTO datasetConfig,
       if (!datasetMetricNames.contains(metricSpec.getName())) {
         MetricConfigDTO metricConfigDTO = 
ConfigGenerator.generateMetricConfig(metricSpec, dataset);
         LOG.info("Creating metric {} in {}", metricSpec.getName(), dataset);
-        DAO_REGISTRY.getMetricConfigDAO().save(metricConfigDTO);
+        this.metricDAO.save(metricConfigDTO);
       }
     }
 
-    // remove deleted metrics from ThirdEye
+    // audit existing metrics in ThirdEye
     for (MetricConfigDTO metricConfig : datasetMetricConfigs) {
-      if (!metricConfig.isDerived()) {
-        if (!schemaMetricNames.contains(getColumnName(metricConfig))) {
-          LOG.info("Deleting metric {} in {}", metricConfig.getName(), 
dataset);
-          DAO_REGISTRY.getMetricConfigDAO().delete(metricConfig);
+      if (!schemaMetricNames.contains(getColumnName(metricConfig))) {
+        if (!metricConfig.isDerived() && 
!metricConfig.getName().equals(ROW_COUNT)) {
 
 Review comment:
   What abt derived metrics? Can we activate/de-activate them as well?

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