Kafka Topic Invalid replication factor error when creating a Kafka topic.

The replication factor specified is not valid for the current Kafka cluster configuration.

Understanding Kafka and Its Purpose

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 real-time data feeds with high throughput and low latency.

Identifying the Symptom

When working with Kafka, you might encounter an error message stating InvalidReplicationFactorException. This error typically occurs when attempting to create a new Kafka topic with an invalid replication factor.

What You Observe

While executing a command to create a Kafka topic, you receive an error message similar to the following:

org.apache.kafka.common.errors.InvalidReplicationFactorException: The replication factor is invalid.

Understanding the Issue

The InvalidReplicationFactorException is thrown when the specified replication factor for a Kafka topic is not suitable for the current cluster configuration. The replication factor determines how many copies of the data are maintained across different brokers. This ensures data durability and availability.

Common Causes

The replication factor is greater than the number of available brokers in the cluster.
The replication factor is set to zero or a negative number.

Steps to Fix the Issue

To resolve the InvalidReplicationFactorException, follow these steps:

Step 1: Verify Cluster Configuration

Ensure that the number of brokers in your Kafka cluster is greater than or equal to the replication factor you intend to set. You can check the number of brokers by using the following command:

bin/kafka-broker-api-versions.sh --bootstrap-server <broker-host>:<port>

Replace <broker-host> and <port> with your broker's host and port.

Step 2: Set a Valid Replication Factor

When creating a new topic, ensure the replication factor is a positive integer and does not exceed the number of brokers. Use the following command to create a topic with a valid replication factor:

bin/kafka-topics.sh --create --topic <topic-name> --bootstrap-server <broker-host>:<port> --replication-factor <valid-replication-factor> --partitions <number-of-partitions>

Replace <topic-name>, <broker-host>, <port>, <valid-replication-factor>, and <number-of-partitions> with appropriate values.

Step 3: Validate the Topic Creation

After creating the topic, verify its configuration using:

bin/kafka-topics.sh --describe --topic <topic-name> --bootstrap-server <broker-host>:<port>

This command will display the topic's details, including the replication factor.

Additional Resources

For more information on Kafka topic configurations, you can refer to the official Kafka documentation. Additionally, the Kafka Quickstart Guide provides a comprehensive overview of setting up and managing Kafka clusters.

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MORE ISSUES

Kafka Topic InvalidRetentionMsException encountered when setting topic configurations.

The retention period for the Kafka topic is set to an invalid value.

Kafka Topic InvalidCleanupPolicyException

The cleanup policy is invalid.

Kafka Topic Invalid replication factor error when creating a Kafka topic.

The replication factor specified is not valid for the current Kafka cluster configuration.

Kafka Topic InvalidPartitionsException

The number of partitions is invalid.

Kafka Topic Invalid session timeout error encountered when configuring Kafka.

The session timeout value set is outside the allowable range.

Kafka Topic InvalidGroupIdException

The group ID is invalid, possibly due to illegal characters or length.

Kafka Topic InvalidRequiredAcksException

The required acks setting is invalid.

Kafka Topic InvalidRecordException

The record is invalid, possibly due to incorrect serialization.

Kafka Topic InvalidPrincipalTypeException

The principal type is invalid.

Kafka Topic UnsupportedForMessageFormatException

The operation is unsupported for the current message format.

Kafka Topic DelegationTokenExpiredException

The delegation token has expired.

Kafka Topic DelegationTokenNotFoundException

The delegation token was not found.

Kafka Topic ConcurrentTransactionsException

Concurrent transactions are not supported.

Kafka Topic InvalidProducerIdMappingException

The producer ID mapping is invalid.

Kafka Topic InvalidTxnStateException encountered during Kafka transactions.

The transaction state is invalid due to improper transaction management.

Kafka Topic PolicyViolationException

A policy violation occurred, possibly due to a security or configuration policy.

Kafka Topic InvalidReplicationAssignmentException encountered when configuring Kafka Topic.

The replication assignment is invalid, possibly due to incorrect broker IDs or partition assignments.

Kafka Topic UnsupportedSaslMechanismException

The SASL mechanism is not supported by the broker.

Kafka Topic SaslAuthenticationException

SASL authentication failed due to incorrect credentials.

Kafka Topic InvalidRequestException

The request is invalid, possibly due to incorrect parameters.

Kafka Topic An unknown server error occurred.

Check the server logs for more details and investigate the root cause.

Kafka Topic StaleBrokerEpochException

The broker epoch is stale, possibly due to a metadata update.

Kafka Topic QuotaExceededException

The client has exceeded its quota for a resource.

Kafka Topic TopicAuthorizationException

The client is not authorized to access the topic.

Kafka Topic InvalidProducerEpochException

The producer epoch is invalid, possibly due to a producer restart.

Kafka Topic InvalidCommitOffsetSizeException

The commit offset size is invalid.

Kafka Topic RebalanceInProgressException

A rebalance is in progress, preventing certain operations.

Kafka Topic InconsistentGroupProtocolException

The group protocol is inconsistent across members.

Kafka Topic UnsupportedVersionException

The client is using a protocol version not supported by the broker.

Kafka Topic InvalidTimestampException

A record has an invalid timestamp.

Kafka Topic GroupAuthorizationException

The client is not authorized to access the consumer group.

Kafka Topic InvalidFetchSizeException encountered when consuming messages from Kafka Topic.

The fetch size is set to an invalid value, either too large or too small.

Kafka Topic CoordinatorNotAvailableException

The group coordinator is not available, possibly due to broker issues.

Kafka Topic TransactionAbortedException

A transaction was aborted, possibly due to a timeout or producer failure.

Kafka Topic NetworkException

A network error occurred while communicating with the broker.

Kafka Topic ProducerFencedException

A transactional producer was fenced off due to a new producer with the same transactional ID.

Kafka Topic Invalid configuration detected in Kafka Topic setup.

A configuration parameter is invalid or missing.

Kafka Topic ReplicaNotAvailableException

A replica for a partition is not available.

Kafka Topic BrokerNotAvailableException

A broker is not available, possibly due to a crash or network partition.

Kafka Topic InvalidTopicException encountered when creating or accessing a Kafka topic.

The topic name is invalid, possibly due to illegal characters or length.

Kafka Topic AuthorizationException

The client is not authorized to access the specified topic.

Kafka Topic RecordTooLargeException

A record exceeds the maximum allowable size.

Kafka Topic RequestTimedOutException

A request to the broker timed out due to network latency or broker overload.

Kafka Topic CorruptRecordException

A record in the topic is corrupted and cannot be deserialized.

Kafka Topic TopicExistsException

An attempt was made to create a topic that already exists.

Kafka Topic NotEnoughReplicasException

The number of in-sync replicas is less than the required minimum.

Kafka Topic OffsetOutOfRangeException

The consumer is trying to fetch data at an offset that is not available.

Kafka Topic InvalidReplicationFactorException

The replication factor is larger than the number of available brokers.

Kafka Topic UnknownTopicOrPartitionException

The specified topic or partition does not exist.

Kafka Topic LeaderNotAvailableException

The leader for a partition is not available, possibly due to broker failure or network issues.

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