Hi,     As i know, when TaskManager send UpdateTaskExecutionState to 
JobManager, if the JobManager failover and the future response is fail, the 
task will be failed. Is it feasible to retry send UpdateTaskExecutionState 
again when future response fail until success. In JobManager HA mode, the 
UpdateTaskExecutionState should be success when the leader JobManager active. 
Or are there any suggestions for sending messages during JobManager failover 
instead of fail task.    Thanks for any help in advance!Zhijiang Wang

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