You are sending messages with keys to a topic. To increase throughput, you decide to increase the number of partitions of the topic. Select all that apply.

Question

Options

• AAll the existing records will get rebalanced among the partitions to balance load
• BNew records with the same key will get written to the partition where old records with that key
• CNew records may get written to a different partition
• DOld records will stay in their partitions

• A
  16% (5)
• B
  10% (3)
• C
  74% (23)

Explanation

Increasing the number of partition causes new messages keys to get hashed differently, and breaks the guarantee "same keys goes to the same partition". Kafka logs are immutable and the previous messages are not re-shuffled.

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