flink報錯：JobManager responsible for xxx lost the leadership

查看jobmanager日誌：standalonesession-0-master.log 

2020-05-16 21:46:53,511 WARN  akka.remote.ReliableDeliverySupervisor                        - Association with remote system [akka.tcp://flink-metrics@master:3821] has failed, address is now gated for [50] ms. Reason: [Disassociated]
2020-05-16 21:46:53,511 WARN  akka.remote.ReliableDeliverySupervisor                        - Association with remote system [akka.tcp://flink@master:6123] has failed, address is now gated for [50] ms. Reason: [Disassociated]
2020-05-16 21:47:36,620 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor            - The heartbeat of JobManager with id bc6c72e5dded7b29a59ecc5417a12aee timed out.
2020-05-16 21:47:36,620 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor            - Close JobManager connection for job 53a1798d17013773e5622cc42c9bb39b.
2020-05-16 21:47:36,621 INFO  org.apache.flink.runtime.taskmanager.Task                     - Attempting to fail task externally Source