The error “Exception in thread ‘main’ joptsimple.UnrecognizedOptionException: zookeeper is not a recognized option” occurs in Kafka environments when using outdated commands. In newer Kafka versions (2.2 and above), the --zookeeper
option has been replaced by --bootstrap-server
. This change means that commands referencing ZooKeeper directly will trigger this error. To resolve it, update your commands to use --bootstrap-server
instead of --zookeeper
.
The root cause of the exception in thread main joptsimple.UnrecognizedOptionException: zookeeper is not a recognized option
error is the deprecation of the --zookeeper
option in newer Kafka versions (2.2 and above). Kafka has replaced the --zookeeper
option with the --bootstrap-server
option. This change means that commands previously using --zookeeper
must now use --bootstrap-server
to specify the Kafka server address.
To identify the error Exception in thread "main" joptsimple.UnrecognizedOptionException: zookeeper is not a recognized option
in logs and error messages:
--zookeeper
in Kafka commands.--zookeeper
option is no longer recognized. Newer Kafka versions (2.2 and above) have replaced it with --bootstrap-server
.Example:
./bin/kafka-console-consumer.sh --topic testTopic --zookeeper localhost:9092
Replace with:
./bin/kafka-console-consumer.sh --topic testTopic --bootstrap-server localhost:9092
Sure, here are the steps to resolve the UnrecognizedOptionException
for ZooKeeper in Kafka:
Identify the Command:
--zookeeper
, it needs to be updated.Replace --zookeeper
with --bootstrap-server
:
--zookeeper
option in favor of --bootstrap-server
.Update Commands:
./bin/kafka-topics.sh --create --topic <topic-name> --bootstrap-server <broker-list> --replication-factor <factor> --partitions <num-partitions>
./bin/kafka-topics.sh --list --bootstrap-server <broker-list>
./bin/kafka-console-consumer.sh --topic <topic-name> --bootstrap-server <broker-list> --from-beginning
./bin/kafka-console-producer.sh --topic <topic-name> --bootstrap-server <broker-list>
Example:
./bin/kafka-console-consumer.sh --topic testTopic --zookeeper localhost:2181
./bin/kafka-console-consumer.sh --topic testTopic --bootstrap-server localhost:9092
This should resolve the UnrecognizedOptionException
error.
This error is crucial for resolving issues in Kafka environments. It occurs when using outdated commands with the deprecated –zookeeper option, which has been replaced by –bootstrap-server in newer Kafka versions (2.2 and above).
To resolve this issue, it’s essential to stay updated with Kafka’s changes and update commands to use the correct options.
By doing so, you can avoid errors and ensure smooth operation of your Kafka environment.