Atlas hooks produce excess Kafka logs if Kafka topic is not created already

Hooks for Atlas publish messages to a Kafka topic named ATLAS_HOOK. If this topic is not present and Atlas does not have permission to create this topic, Kafka produces excessive logs as below (example in /tmp/hive/hive.log).

2016-08-22 06:43:47,655 WARN [kafka-producer-network-thread | producer-1]: clients.NetworkClient (NetworkClient.java:handleResponse(600)) - Error while fetching metadata with correlation id 1177 :

{ATLAS_HOOK=UNKNOWN_TOPIC_OR_PARTITION}
2016-08-22 06:43:47,756 WARN [kafka-producer-network-thread | producer-1]: clients.NetworkClient (NetworkClient.java:handleResponse(600)) - Error while fetching metadata with correlation id 1178 : {ATLAS_HOOK=UNKNOWN_TOPIC_OR_PARTITION}

2016-08-22 06:43:47,858 WARN [kafka-producer-network-thread | producer-1]: clients.NetworkClient (NetworkClient.java:handleResponse(600)) - Error while fetching metadata with correlation id 1179 :

{ATLAS_HOOK=UNKNOWN_TOPIC_OR_PARTITION}
2016-08-22 06:43:47,961 WARN [kafka-producer-network-thread | producer-1]: clients.NetworkClient (NetworkClient.java:handleResponse(600)) - Error while fetching metadata with correlation id 1180 : {ATLAS_HOOK=UNKNOWN_TOPIC_OR_PARTITION}

2016-08-22 06:43:48,062 WARN [kafka-producer-network-thread | producer-1]: clients.NetworkClient (NetworkClient.java:handleResponse(600)) - Error while fetching metadata with correlation id 1181 :

{ATLAS_HOOK=UNKNOWN_TOPIC_OR_PARTITION}
2016-08-22 06:43:48,165 WARN [kafka-producer-network-thread | producer-1]: clients.NetworkClient (NetworkClient.java:handleResponse(600)) - Error while fetching metadata with correlation id 1182 : {ATLAS_HOOK=UNKNOWN_TOPIC_OR_PARTITION}

2016-08-22 06:43:48,265 WARN [kafka-producer-network-thread | producer-1]: clients.NetworkClient (NetworkClient.java:handleResponse(600)) - Error while fetching metadata with correlation id 1183 :

{ATLAS_HOOK=UNKNOWN_TOPIC_OR_PARTITION}
2016-08-22 06:43:48,366 WARN [kafka-producer-network-thread | producer-1]: clients.NetworkClient (NetworkClient.java:handleResponse(600)) - Error while fetching metadata with correlation id 1184 : {ATLAS_HOOK=UNKNOWN_TOPIC_OR_PARTITION}

2016-08-22 06:43:48,467 WARN [kafka-producer-network-thread | producer-1]: clients.NetworkClient (NetworkClient.java:handleResponse(600)) - Error while fetching metadata with correlation id 1185 :

{ATLAS_HOOK=UNKNOWN_TOPIC_OR_PARTITION}