Savepoint failure with operation not found under key

[Rainie Li]

Hi Flink Community,

I found this error when I tried to create a savepoint for my flink job.
It's in version 1.9.
{

    "errors": [
        "Operation not found under key:
org.apache.flink.runtime.rest.handler.job.AsynchronousJobOperationKey@57b9711e"
    ]
}

Here is error from JM log:

2021-06-21 06:49:50,195 ERROR
org.apache.flink.runtime.rest.handler.job.savepoints.SavepointHandlers$SavepointStatusHandler
 - Exception occurred in REST handler: Operation not found under key:
org.apache.flink.runtime.rest.handler.job.AsynchronousJobOperationKey@56675052
2021-06-21 06:50:50,023 INFO
org.apache.flink.runtime.checkpoint.CheckpointCoordinator     -
Checkpoint 47281 of job 8de31918b2f2d983eee0d7f988a8f95a expired
before completing.


Any idea what could cause it and how to find more debugging info?

Appreciated for any suggestions.


Thanks

Best regard

Rainie