Apache Kafka is a distributed event streaming platform used by thousands of companies for high-performance data pipelines, streaming analytics, data integration, and mission-critical applications. It is designed to handle data in real-time, allowing for the seamless integration of data from various sources into a unified stream.
When working with Kafka, you might encounter the UnknownTopicOrPartitionException
. This error typically occurs when a client attempts to interact with a Kafka topic or partition that does not exist. The error message might look something like this:
org.apache.kafka.common.errors.UnknownTopicOrPartitionException: This server does not host this topic-partition.
The UnknownTopicOrPartitionException
is thrown by Kafka when the specified topic or partition cannot be found on the server. This can happen for several reasons, such as:
Here are some common scenarios that lead to this exception:
To resolve the UnknownTopicOrPartitionException
, follow these steps:
Ensure that the topic name and partition number specified in your Kafka client configuration are correct. You can list all available topics using the following command:
bin/kafka-topics.sh --list --bootstrap-server <broker-host>:<port>
Replace <broker-host>
and <port>
with your Kafka broker's host and port.
If the topic does not exist, you can create it using the following command:
bin/kafka-topics.sh --create --topic <topic-name> --bootstrap-server <broker-host>:<port> --partitions <num-partitions> --replication-factor <replication-factor>
Ensure that the <num-partitions>
and <replication-factor>
are set according to your requirements.
If you are specifying a partition number, ensure it is within the range of available partitions for the topic. You can describe the topic to see its partition details:
bin/kafka-topics.sh --describe --topic <topic-name> --bootstrap-server <broker-host>:<port>
For more detailed information on managing Kafka topics, you can refer to the official Kafka Documentation. Additionally, the Kafka Quickstart Guide provides a comprehensive introduction to setting up and managing Kafka clusters.
Let Dr. Droid create custom investigation plans for your infrastructure.
Start Free POC (15-min setup) →