Add 'DelayQueueSize' (DataDog#9033)

confluent_platform/datadog_checks/confluent_platform/data/metrics.yaml

@@ -21,6 +21,8 @@ jmx_metrics:
         - kafka.server:type=ReplicaManager,name=UnderMinIsrPartitionCount
         # Number of under-replicated partitions (| ISR | < | all replicas |). Alert if value is greater than 0.
         - kafka.server:type=ReplicaManager,name=UnderReplicatedPartitions
+        # Number of producer clients currently being throttled. The value can be any number greater than or equal to 0.
+        - kafka.server:type=Produce,name=DelayQueueSize
       attribute:
         Value:
           alias: confluent.$domain.$type.$name

confluent_platform/metadata.csv

@@ -23,6 +23,7 @@ confluent.kafka.server.request_handler_pool.avg_idle_percent,gauge,,fraction,,Av
 confluent.kafka.server.request_handler_pool.avg_idle_percent.rate,gauge,,fraction,,Number of nanoseconds where the request handler threads were idle during the last second. Values are between 0 (all resources are used) and 10^9 (all resources are available),0,confluent_platform,req handler avg idle percent
 confluent.kafka.server.replica_manager.isr_expands_per_sec.rate,gauge,,unit,,Rate at which the pool of in-sync replicas (ISRs) expands.,0,confluent_platform,replica manager isr expands
 confluent.kafka.server.replica_manager.isr_shrinks_per_sec.rate,gauge,,unit,,Rate at which the pool of in-sync replicas (ISRs) shrinks.,0,confluent_platform,replica manager isr shrinks
+confluent.kafka.server.produce.delay_queue_size,gauge,,,,Number of producer clients currently being throttled. The value can be any number greater than or equal to 0.,0,confluent_platform,produce delay queue size
 confluent.kafka.server.session.zoo_keeper_disconnects_per_sec.rate,gauge,,unit,second,ZooKeeper client is currently disconnected from the ensemble. The client lost its previous connection to a server and it is currently trying to reconnect. The session is not necessarily expired.,0,confluent_platform,session zk disconnects
 confluent.kafka.server.session.zoo_keeper_expires_per_sec.rate,gauge,,unit,second,"The ZooKeeper session has expired. When a session expires, we can have leader changes and even a new controller.",0,confluent_platform,session zk expires
 confluent.kafka.server.session.zoo_keeper_sync_connects_per_sec.rate,gauge,,unit,second,ZooKeeper client is connected to the ensemble and ready to execute operations.,0,confluent_platform,session zk sync connects