Jun Rao created KAFKA-1202:
------------------------------
Summary: optimize ZK access in KafkaController
Key: KAFKA-1202
URL: https://issues.apache.org/jira/browse/KAFKA-1202
Project: Kafka
Issue Type: Bug
Components: core
Affects Versions: 0.8.1
Reporter: Jun Rao
In KafkaController, we access ZK in the following places. Those accesses are
not necessary since we can read from the cache in the controller.
In onBrokerFailure(deadBrokers: Seq[Int]),
replicaStateMachine.handleStateChanges(getAllReplicasOnBroker(zkClient,
controllerContext.allTopics.toSeq, deadBrokers), OfflineReplica)
}
In onBrokerStartup(newBrokers: Seq[Int])
replicaStateMachine.handleStateChanges(getAllReplicasOnBroker(zkClient,
controllerContext.allTopics.toSeq, newBrokers), OnlineReplica)
}
In shutdownBroker(),
getPartitionsAssignedToBroker(zkClient, controllerContext.allTopics.toSeq,
id).map {
}
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