Add allowAutoTopicCreation to broker.conf and reference configuration. (#4694)

(cherry picked from commit a0ec11ac)

conf/broker.conf

@@ -85,6 +85,9 @@ backlogQuotaDefaultRetentionPolicy=producer_request_hold
 # Default ttl for namespaces if ttl is not already configured at namespace policies. (disable default-ttl with value 0)
 ttlDurationDefaultInSeconds=0
 
+# Enable topic auto creation if new producer or consumer connected (disable auto creation with value false)
+allowAutoTopicCreation=true
+
 # Enable the deletion of inactive topics
 brokerDeleteInactiveTopicsEnabled=true
 

site2/docs/reference-configuration.md

@@ -126,6 +126,7 @@ Pulsar brokers are responsible for handling incoming messages from producers, di
 |backlogQuotaCheckEnabled|  Enable backlog quota check. Enforces action on topic when the quota is reached  |true|
 |backlogQuotaCheckIntervalInSeconds|  How often to check for topics that have reached the quota |60|
 |backlogQuotaDefaultLimitGB|  Default per-topic backlog quota limit |10|
+|allowAutoTopicCreation| Enable topic auto creation if new producer or consumer connected |true|
 |brokerDeleteInactiveTopicsEnabled| Enable the deletion of inactive topics  |true|
 |brokerDeleteInactiveTopicsFrequencySeconds|  How often to check for inactive topics  |60|
 |messageExpiryCheckIntervalInMinutes| How frequently to proactively check and purge expired messages  |5|