Hi, I would start by looking at the Job Manager and Task Manager logs. Take a look if Task Managers connected/registered in the Job Manager and if so, if there were no problems when submitting the job. It seems like either there are not enough slots, or slots are actually not available.
Best, Piotrek pt., 18 cze 2021 o 05:53 Lei Wang <leiwang...@gmail.com> napisaĆ(a): > 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 >