我们有3台kafka机器的hadoop版本2.6.5
kafka经纪人是-101，102，103
在/ var / log / kafka下的server.log中，我们看到了有关消息
Shutting down
Shutdown completed
此消息不是因为我们停止了kafka经纪人，而且我们多次看到这些行为
[2019-01-15 12:50:24,416] INFO Partition [part_hgl.gtp.state,76] on broker 101: Expanding ISR for partition [part_hgl.gtp.state,76] from 101,102 to 101,102,103 (kafka.cluster.Partition)
[2019-01-15 12:50:24,417] INFO Partition [part_hgl.gtp.state,67] on broker 101: Expanding ISR for partition [part_hgl.gtp.state,67] from 101,102 to 101,102,103 (kafka.cluster.Partition)
[2019-01-15 12:50:24,417] INFO [ReplicaFetcherThread-0-103], Shutting down (kafka.server.ReplicaFetcherThread)
[2019-01-15 12:50:24,418] INFO Partition [part_hgl.gtp.state,73] on broker 101: Expanding ISR for partition [part_hgl.gtp.state,73] from 101,102 to 101,102,103 (kafka.cluster.Partition)
[2019-01-15 12:50:24,419] INFO Partition [part_hgl.gtp.state,13] on broker 101: Expanding ISR for partition [part_hgl.gtp.state,13] from 101,102 to 101,102,103 (kafka.cluster.Partition)
[2019-01-15 12:50:24,419] INFO [ReplicaFetcherThread-0-103], Shutdown completed (kafka.server.ReplicaFetcherThread)
[2019-01-15 12:50:24,419] INFO [ReplicaFetcherThread-0-103], Stopped (kafka.server.ReplicaFetcherThread)
我们怎么解释呢？ ，
为什么卡夫卡经纪人（103）正在关闭？