NoBrokersAvailable: NoBrokersAvailable-Kafka Error

Question

i have already started to learn Kafka. Trying basic operations on it. I have stucked on a point which about the \'Brokers\'.

My kafka is running but when i want to

Answer 1

You cannot create partitions within a consumer. Partitions are created when you create a topic. For example, using command line tool:

bin/kafka-topics.sh \
  --zookeeper localhost:2181 \
  --create --topic myNewTopic \
  --partitions 10 \
  --replication-factor 3

This creates a new topic "myNewTopic" with 10 partitions (numbered from 0 to 9) and replication factor 3. (see http://docs.confluent.io/3.0.0/kafka/post-deployment.html#admin-operations and https://kafka.apache.org/documentation.html#quickstart_createtopic)

Within your consumer, if you call assign(), it means you want to consume the corresponding partition and this partition must exist already.