goiri commented on code in PR #5683:
URL: https://github.com/apache/hadoop/pull/5683#discussion_r1204411924


##########
hadoop-hdfs-project/hadoop-hdfs-rbf/src/test/java/org/apache/hadoop/hdfs/server/federation/metrics/TestNameserviceRPCMetrics.java:
##########
@@ -134,5 +136,26 @@ public void testProxyOp() throws IOException {
         getMetrics(NAMESERVICE_RPC_METRICS_PREFIX + "ns1"));
   }
 
+  @Test
+  public void testProxyOpCompleteConcurrent() throws IOException {
+
+    long ns0ProxyOpBefore = getLongCounter("ProxyOp",
+        getMetrics(NAMESERVICE_RPC_METRICS_PREFIX + "ns0"));
+    long ns1ProxyOpBefore = getLongCounter("ProxyOp",
+        getMetrics(NAMESERVICE_RPC_METRICS_PREFIX + "ns1"));
+    assertCounter("ProxyOp", 0L,
+        getMetrics(NAMESERVICE_RPC_METRICS_PREFIX + "concurrent"));
+    // RPC which uses invokeConcurrent.
+    router.getRpcServer().setBalancerBandwidth(1048576L);

Review Comment:
   Can we make this 1024 * 1024L?



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