Onur Karaman created KAFKA-5323:
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Summary: AdminUtils.createTopic should check topic existence
upfront
Key: KAFKA-5323
URL: https://issues.apache.org/jira/browse/KAFKA-5323
Project: Kafka
Issue Type: Improvement
Reporter: Onur Karaman
Assignee: Onur Karaman
When a topic exists, AdminUtils.createTopic unnecessarily does N+2 zookeeper
reads where N is the number of brokers. Here is the breakdown of the N+2
zookeeper reads:
# reads the current list of brokers in zookeeper (1 zookeeper read)
# reads metadata for each broker in zookeeper (N zookeeper reads where N is the
number of brokers)
# checks for topic existence in zookeeper (1 zookeeper read)
We can reduce the N+2 reads down to 1 by checking topic existence upfront.
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