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What do you mean by graceful shutdown in Kafka?

Answer»

The Apache cluster will automatically identify any broker shutdown or failure. In this instance, new leaders for partitions previously handled by that device will be chosen. This can happen as a result of a server failure or even if it is shut down for maintenance or CONFIGURATION changes. When a server is taken down on purpose, Kafka PROVIDES a GRACEFUL method for terminating the server rather than killing it.

When a server is switched off:

  • To prevent having to undertake any log recovery when Kafka is restarted, it ensures that all of its logs are synced ONTO a disk. Because log recovery takes time, purposeful restarts can be sped up.
  • Prior to shutting down, all partitions for which the server is the leader will be moved to the replicas. The leadership transfer will be FASTER as a result, and the period each partition is inaccessible will be decreased to a few milliseconds.


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