如题，在工作中经常遇到flink任务各种异常，今天我列了下主要的异常，想请大佬们对不同异常的出现场景根据自身经验说下原因、场景、还有可能的优化解决方案。
(1) org.apache.flink.runtime.jobmaster.JobMasterException: TaskManager
with id {...} is no longer reachable.
(2) org.apache.flink.util.FlinkException: The TaskExecutor is shutting down.
(3)
org.apache.flink.runtime.io.network.netty.exception.RemoteTransportException:
Lost connection to task manager '10.35.213.153/10.35.213.153:2085'.
This indicates that the remote task manager was lost.
(4) org.apache.flink.runtime.io.network.netty.exception.LocalTransportException:
readAddress(..) failed: Connection timed out (connection to
'10.35.116.170/10.35.116.170:2031')
(5)
org.apache.flink.shaded.netty4.io.netty.channel.unix.Errors$NativeIoException:
writeAddress(..) failed: Connection reset by peer
(6) java.util.concurrent.TimeoutException: Heartbeat of TaskManager
with id {...} timed out.
