[Solved] You have a Kafka cluster with 5 brokers. You want to create a topic with 3 partitions and replication factor 3.... What must you do to support this change? | Kafka

Kafka - Cluster Architecture

You have a Kafka cluster with 5 brokers. You want to create a topic with 3 partitions and replication factor 3. Later, you want to increase the replication factor to 4. What must you do to support this change?

AIncrease replication factor directly without changes

BDelete the topic and recreate with replication factor 4

CReduce partitions to 2 before increasing replication factor

DAdd at least one more broker to the cluster before increasing replication factor

Step-by-Step Solution

Solution:

Step 1: Check current cluster broker count
There are 5 brokers, which is enough for replication factor 4.
Step 2: Understand replication factor increase requirements
Increasing replication factor to 4 requires at least 4 brokers. Since 5 brokers exist, it's possible.
Step 3: Verify if any action needed
To increase replication factor to 4, the cluster must have at least 4 brokers. Since it does, you can increase directly.
Final Answer:
Increase replication factor directly without changes -> Option A
Quick Check:
Replication factor increase possible if brokers >= new factor [OK]

Quick Trick: Increase RF directly if brokers suffice [OK]

Common Mistakes:

Deleting topic unnecessarily
Reducing partitions to change replication factor
Adding brokers when not needed

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What must you do to support this change?

Step 1: Check current cluster broker count

Step 2: Understand replication factor increase requirements

Step 3: Verify if any action needed

Final Answer:

Quick Check:

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