Task is always created state after submit a example job

[Lei Wang]

flink 1.11.2 on a single host.

./bin/start-cluster.sh and then

./bin/flink run examples/streaming/SocketWindowWordCount.jar  --hostname
localhost --port 1111

But on the jobmanager UI, the task is always in created state.  There's
available  slots.

Any insights on this?

Thanks,
Lei