Github user gyfora commented on the issue:
https://github.com/apache/flink/pull/2168
I think it is often the case that the timeout is caused by some failure.
For instance the savepoint restore failes due to something, then you get this
timeout in the command line.
Maybe it's also good to add a note to check the JM log for any failures
because increasing the timeout wont help.
Just a thought :)
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