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What will happen if a quorum queue node crashes in a 3-node RabbitMQ cluster?

medium📝 Command Output Q5 of 15
RabbitMQ - Clustering
What will happen if a quorum queue node crashes in a 3-node RabbitMQ cluster?
AThe queue remains available with leader election on remaining nodes.
BThe queue is deleted automatically.
CAll messages are lost immediately.
DThe cluster shuts down to prevent data loss.
Step-by-Step Solution
Solution:

  1. Step 1: Understand quorum queue fault tolerance

    Quorum queues replicate data and elect a new leader if a node fails.

  2. Step 2: Identify expected behavior on node crash

    The queue stays available with leader election among remaining nodes.

  3. Final Answer:

    The queue remains available with leader election on remaining nodes. -> Option A

  4. Quick Check:

    Node crash + quorum queue = availability with leader election [OK]
Quick Trick: Quorum queues tolerate node failure with leader election [OK]
Common Mistakes:
MISTAKES
  • Thinking queue deletes on node failure
  • Assuming message loss immediately
  • Believing cluster shuts down on single node failure

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