kafka重平衡不生效?

第一步：本地启动两个节点，分别配置监听为broker0=ip:9092和broker=ip:9094，并且启动重平衡频率为5s,10%；创建一个topic有5个分区2个备份

kafka_2.13-3.4.0$ bin/kafka-topics.sh --describe --topic test2 --bootstrap-server ip:9092
Topic: test2    TopicId: y2dwPl1ZTeqoFYCJiDS_2A PartitionCount: 5       ReplicationFactor: 2    Configs: retention.ms=20,retention.bytes=20
        Topic: test2    Partition: 0    Leader: 1       Replicas: 1,0   Isr: 1,0
        Topic: test2    Partition: 1    Leader: 0       Replicas: 0,1   Isr: 1,0
        Topic: test2    Partition: 2    Leader: 1       Replicas: 1,0   Isr: 1,0
        Topic: test2    Partition: 3    Leader: 0       Replicas: 0,1   Isr: 1,0
        Topic: test2    Partition: 4    Leader: 1       Replicas: 1,0   Isr: 1,0

第二步：将broker1节点下线，此时启用broker0的备份，查询topic详情发现所有分区的leader都是broker0，原本leader是broker1的分区的备份的优先副本还是1

kafka_2.13-3.4.0$ bin/kafka-topics.sh --describe --topic test2 --bootstrap-server ip:9092
Topic: test2    TopicId: y2dwPl1ZTeqoFYCJiDS_2A PartitionCount: 5       ReplicationFactor: 2    Configs: 
        Topic: test2    Partition: 0    Leader: 0       Replicas: 1,0   Isr: 0
        Topic: test2    Partition: 1    Leader: 0       Replicas: 0,1   Isr: 0
        Topic: test2    Partition: 2    Leader: 0       Replicas: 1,0   Isr: 0
        Topic: test2    Partition: 3    Leader: 0       Replicas: 0,1   Isr: 0
        Topic: test2    Partition: 4    Leader: 0       Replicas: 1,0   Isr: 0

第三步：再启动broker1，不知道为什么始终没有重平衡分区，查询的topic详情和第二步的一样，反过来下线broker0再上线的话就触发重平衡，查询到的分区详情就和第一步一样，

为什么broker1下线再上线没有触发重平衡，而broker0下线再上线就触发了重平衡？

kafka重平衡不生效?

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