ruanwenjun commented on code in PR #16121:
URL: 
https://github.com/apache/dolphinscheduler/pull/16121#discussion_r1629271154


##########
dolphinscheduler-extract/dolphinscheduler-extract-base/src/test/java/org/apache/dolphinscheduler/extract/base/metrics/RpcMetricsTest.java:
##########
@@ -0,0 +1,48 @@
+package org.apache.dolphinscheduler.extract.base.metrics;
+
+import com.google.common.truth.Truth;
+import io.micrometer.core.instrument.Counter;
+import io.micrometer.core.instrument.Measurement;
+import io.micrometer.core.instrument.Metrics;
+import io.micrometer.core.instrument.simple.SimpleMeterRegistry;
+import java.util.Iterator;
+import org.junit.jupiter.api.Test;
+import static com.google.common.truth.Truth.assertThat;
+import static org.junit.jupiter.api.Assertions.*;
+
+class RpcMetricsTest {
+
+    @Test
+    public void setup() {
+        Metrics.globalRegistry.clear();
+        // 添加一个简单的内存中指标注册表

Review Comment:
   Done



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