模拟宕机后kafka的重新分区

直接停掉192.168.233.133:9092 (broker.id = 5)

查看topic 分区

$ /data/kafka_2.13-3.0.0/bin/kafka-topics.sh --bootstrap-server 192.168.233.132:9092 --topic quickstart77-events --describe
Topic: quickstart77-events    TopicId: A7bNWYseSNqlGfs1XPhN9g    PartitionCount: 6    ReplicationFactor: 2    Configs: segment.bytes=1073741824
    Topic: quickstart77-events    Partition: 0    Leader: 4    Replicas: 5,4    Isr: 4
    Topic: quickstart77-events    Partition: 1    Leader: 1    Replicas: 1,2    Isr: 1,2
    Topic: quickstart77-events    Partition: 2    Leader: 4    Replicas: 4,3    Isr: 4,3
    Topic: quickstart77-events    Partition: 3    Leader: 2    Replicas: 2,0    Isr: 2,0
    Topic: quickstart77-events    Partition: 4    Leader: 3    Replicas: 3,5    Isr: 3
    Topic: quickstart77-events    Partition: 5    Leader: 0    Replicas: 0,1    Isr: 0,1

宕掉的broker已经不在leader和Isr中，Replicas依然还在

恢复192.168.233.133:9092 (broker.id = 5)

$ /data/kafka_2.13-3.0.0/bin/kafka-topics.sh --bootstrap-server 192.168.233.132:9092 --topic quickstart77-events --describe
Topic: quickstart77-events    TopicId: A7bNWYseSNqlGfs1XPhN9g    PartitionCount: 6    ReplicationFactor: 2    Configs: segment.bytes=1073741824
    Topic: quickstart77-events    Partition: 0    Leader: 4    Replicas: 5,4    Isr: 4,5
    Topic: quickstart77-events    Partition: 1    Leader: 1    Replicas: 1,2    Isr: 1,2
    Topic: quickstart77-events    Partition: 2    Leader: 4    Replicas: 4,3    Isr: 4,3
    Topic: quickstart77-events    Partition: 3    Leader: 2    Replicas: 2,0    Isr: 2,0
    Topic: quickstart77-events    Partition: 4    Leader: 3    Replicas: 3,5    Isr: 3,5
    Topic: quickstart77-events    Partition: 5    Leader: 0    Replicas: 0,1    Isr: 0,1

Isr中已经恢复看到了，但是leader中还是没有

再过一段时间再观察

$ /data/kafka_2.13-3.0.0/bin/kafka-topics.sh --bootstrap-server 192.168.233.132:9092 --topic quickstart77-events --describe
Topic: quickstart77-events    TopicId: A7bNWYseSNqlGfs1XPhN9g    PartitionCount: 6    ReplicationFactor: 2    Configs: segment.bytes=1073741824
    Topic: quickstart77-events    Partition: 0    Leader: 5    Replicas: 5,4    Isr: 4,5
    Topic: quickstart77-events    Partition: 1    Leader: 1    Replicas: 1,2    Isr: 1,2
    Topic: quickstart77-events    Partition: 2    Leader: 4    Replicas: 4,3    Isr: 4,3
    Topic: quickstart77-events    Partition: 3    Leader: 2    Replicas: 2,0    Isr: 2,0
    Topic: quickstart77-events    Partition: 4    Leader: 3    Replicas: 3,5    Isr: 3,5
    Topic: quickstart77-events    Partition: 5    Leader: 0    Replicas: 0,1    Isr: 0,1

leader也能自动恢复了