When attempting to read from a subscribed topic, a consumer application is not seeing produced messages. Which of the following could be the cause? (Choose two.)

The correct answer is B. With acks=1, the producer waits only for the leader broker to acknowledge the write, but if an D. A consumer failure triggers rebalance, during which partitions are revoked and reassigned. ISR broker fails, it can disrupt ISR shrinkage and leader availability, delaying when messages become visible or committed for consumer reads. across group members; no new messages are fetched until rebalance completes and assignments stabilize.

Troubleshooting

Question

Options

AThe consumer is unable to communicate with the_consumer_offsets topic
BWith acks=1, the producer waits only for the leader broker to acknowledge the write, but if an
CThe consumer's single call to poll() is trying to access multiple partitions
DA consumer failure triggers rebalance, during which partitions are revoked and reassigned

How the community answered

(42 responses)

A
12% (5)
B
81% (34)
C
7% (3)

Explanation

ISR broker fails, it can disrupt ISR shrinkage and leader availability, delaying when messages become visible or committed for consumer reads. across group members; no new messages are fetched until rebalance completes and assignments stabilize.

Topics

#consumer troubleshooting#consumer rebalancing#acks configuration#consumer offsets

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