dragosvictor commented on code in PR #22058:
URL: https://github.com/apache/pulsar/pull/22058#discussion_r1504885647


##########
pulsar-broker/src/test/java/org/apache/pulsar/client/api/BrokerServiceLookupTest.java:
##########
@@ -1125,6 +1201,17 @@ public void 
testLookupConnectionNotCloseIfGetUnloadingExOrMetadataEx() throws Ex
         assertTrue(lookupService instanceof BinaryProtoLookupService);
         ClientCnx lookupConnection = 
pulsarClientImpl.getCnxPool().getConnection(lookupService.resolveHost()).join();
 
+        var metricName = "pulsar.broker.lookup.request.duration";
+        var metricReader = pulsarTestContext.getOpenTelemetryMetricReader();
+        assertThat(metricReader.collectAllMetrics())
+                .noneSatisfy(metric -> assertThat(metric)
+                        .hasName(metricName)
+                        .hasHistogramSatisfying(histogram -> 
histogram.hasPointsSatisfying(
+                                point -> point
+                                        
.hasAttributes(OpenTelemetryAttributes.PULSAR_RESPONSE_STATUS_FAILURE),

Review Comment:
   The outer assertion is `noneSatisfy`, so the fewer conditions we put on 
these histogram points, the fewer false positives we can expect.



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