hugegraph-test/src/main/java/org/apache/hugegraph/api/MetricsApiTest.java [95:126]:
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                assertMapContains(graph, "cluster_id");
                assertMapContains(graph, "servers");

                servers = (Map<?, ?>) graph.get("servers");
                Assert.assertGte(1, servers.size());
                // TODO: Uncomment after fixed #1843
                for (Map.Entry<?, ?> e : servers.entrySet()) {
                    String key = (String) e.getKey();
                    value = e.getValue();
                    Assert.assertTrue(String.format(
                                      "Expect map value for key %s but got %s",
                                      key, value),
                                      value instanceof Map);
                    host = (Map<?, ?>) value;
                    assertMapContains(host, "mem_max");
                    assertMapContains(host, "mem_committed");
                    assertMapContains(host, "mem_used");
                    assertMapContains(host, "mem_used_readable");
                    assertMapContains(host, "mem_unit");

                    assertMapContains(host, "disk_usage");
                    assertMapContains(host, "disk_usage_readable");
                    assertMapContains(host, "disk_usage_details");
                    assertMapContains(host, "disk_unit");

                    assertMapContains(host, "uptime");
                    assertMapContains(host, "uptime_readable");
                    assertMapContains(host, "time_unit");

                    assertMapContains(host, "estimated_partition_count");
                    assertMapContains(host, "dropped_mutations");
                    assertMapContains(host, "pending_flushes");
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hugegraph-test/src/main/java/org/apache/hugegraph/api/MetricsApiTest.java [158:189]:
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                assertMapContains(graph, "cluster_id");
                assertMapContains(graph, "servers");

                servers = (Map<?, ?>) graph.get("servers");
                Assert.assertGte(1, servers.size());

                for (Map.Entry<?, ?> e : servers.entrySet()) {
                    String key = (String) e.getKey();
                    value = e.getValue();
                    Assert.assertTrue(String.format(
                                      "Expect map value for key %s but got %s",
                                      key, value),
                                      value instanceof Map);
                    host = (Map<?, ?>) value;
                    assertMapContains(host, "mem_max");
                    assertMapContains(host, "mem_committed");
                    assertMapContains(host, "mem_used");
                    assertMapContains(host, "mem_used_readable");
                    assertMapContains(host, "mem_unit");

                    assertMapContains(host, "disk_usage");
                    assertMapContains(host, "disk_usage_readable");
                    assertMapContains(host, "disk_usage_details");
                    assertMapContains(host, "disk_unit");

                    assertMapContains(host, "uptime");
                    assertMapContains(host, "uptime_readable");
                    assertMapContains(host, "time_unit");

                    assertMapContains(host, "estimated_partition_count");
                    assertMapContains(host, "dropped_mutations");
                    assertMapContains(host, "pending_flushes");
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