initializeNewPublishers: the loader is still catching up because we still don't know the high water mark yet

[xinzhuxiansheng]

环境：
kafka 3.4.1 ， 基于 kraft 部署 ， broker log 不断打印下面 日志

[2023-07-28 06:37:43,505] INFO [RaftManager nodeId=0] Disconnecting from node 1 due to request timeout. (org.apache.kafka.clients.NetworkClient)
[2023-07-28 06:37:43,506] INFO [RaftManager nodeId=0] Cancelled in-flight API_VERSIONS request with correlation id 383 due to node 1 being disconnected (elapsed time since creation: 2088ms, elapsed time since send: 2088ms, request timeout: 2000ms) (org.apache.kafka.clients.NetworkClient)
[2023-07-28 06:37:48,085] INFO [RaftManager nodeId=0] Disconnecting from node 1 due to request timeout. (org.apache.kafka.clients.NetworkClient)
[2023-07-28 06:37:48,085] INFO [RaftManager nodeId=0] Cancelled in-flight API_VERSIONS request with correlation id 387 due to node 1 being disconnected (elapsed time since creation: 3979ms, elapsed time since send: 3979ms, request timeout: 2000ms) (org.apache.kafka.clients.NetworkClient)
[2023-07-28 06:37:50,792] INFO [RaftManager nodeId=0] Disconnecting from node 1 due to request timeout. (org.apache.kafka.clients.NetworkClient)
[2023-07-28 06:37:50,792] INFO [RaftManager nodeId=0] Cancelled in-flight API_VERSIONS request with correlation id 391 due to node 1 being disconnected (elapsed time since creation: 2006ms, elapsed time since send: 2006ms, request timeout: 2000ms) (org.apache.kafka.clients.NetworkClient)
[2023-07-28 06:37:55,387] INFO [RaftManager nodeId=0] Disconnecting from node 1 due to request timeout. (org.apache.kafka.clients.NetworkClient)
[2023-07-28 06:37:55,388] INFO [RaftManager nodeId=0] Cancelled in-flight API_VERSIONS request with correlation id 394 due to node 1 being disconnected (elapsed time since creation: 4000ms, elapsed time since send: 4000ms, request timeout: 2000ms) (org.apache.kafka.clients.NetworkClient)
[2023-07-28 06:37:57,990] INFO [RaftManager nodeId=0] Disconnecting from node 1 due to request timeout. (org.apache.kafka.clients.NetworkClient)
[2023-07-28 06:37:58,006] INFO [RaftManager nodeId=0] Cancelled in-flight API_VERSIONS request with correlation id 398 due to node 1 being disconnected (elapsed time since creation: 2126ms, elapsed time since send: 2126ms, request timeout: 2000ms) (org.apache.kafka.clients.NetworkClient)
[2023-07-28 06:38:02,691] INFO [RaftManager nodeId=0] Disconnecting from node 1 due to request timeout. (org.apache.kafka.clients.NetworkClient)
[2023-07-28 06:38:02,691] INFO [RaftManager nodeId=0] Cancelled in-flight API_VERSIONS request with correlation id 401 due to node 1 being disconnected (elapsed time since creation: 3801ms, elapsed time since send: 3801ms, request timeout: 2000ms) (org.apache.kafka.clients.NetworkClient)
[2023-07-28 06:38:05,486] INFO [RaftManager nodeId=0] Disconnecting from node 1 due to request timeout. (org.apache.kafka.clients.NetworkClient)
[2023-07-28 06:38:05,488] INFO [RaftManager nodeId=0] Cancelled in-flight API_VERSIONS request with correlation id 405 due to node 1 being disconnected (elapsed time since creation: 2001ms, elapsed time since send: 2001ms, request timeout: 2000ms) (org.apache.kafka.clients.NetworkClient)

[2023-07-28 06:31:44,336] INFO [MetadataLoader 0] initializeNewPublishers: the loader is still catching up because we still don't know the high water mark yet. (org.apache.kafka.image.loader.MetadataLoader)

这个信息是什么意思？

@hanyu100