Fix #1127 Comparison method violates its general contract (#1129)

apm-collector/apm-collector-storage/collector-storage-es-provider/src/main/java/org/apache/skywalking/apm/collector/storage/es/dao/ui/ApplicationMetricEsUIDAO.java

@@ -78,7 +78,7 @@ public class ApplicationMetricEsUIDAO extends EsDAO implements IApplicationMetri
             applicationThroughputList.add(applicationThroughput);
         });
 
-        applicationThroughputList.sort((first, second) -> first.getCpm() > second.getCpm() ? -1 : 1);
+        applicationThroughputList.sort((first, second) -> Integer.compare(second.getCpm(), first.getCpm()));
 
         if (applicationThroughputList.size() <= topN) {
             return applicationThroughputList;

apm-collector/apm-collector-storage/collector-storage-es-provider/src/main/java/org/apache/skywalking/apm/collector/storage/es/dao/ui/InstanceMetricEsUIDAO.java

@@ -84,7 +84,7 @@ public class InstanceMetricEsUIDAO extends EsDAO implements IInstanceMetricUIDAO
             appServerInfoList.add(appServerInfo);
         });
 
-        appServerInfoList.sort((first, second) -> first.getCpm() > second.getCpm() ? -1 : 1);
+        appServerInfoList.sort((first, second) -> Integer.compare(second.getCpm(), first.getCpm()));
         if (appServerInfoList.size() <= topN) {
             return appServerInfoList;
         } else {