We are in the process of upgrading Storm version from 1.x.x to 2.1.0, and were able to bring up the Storm cluster, and it's running fine so far, with just one topology.
We see a new owner section in the Storm UI, with the following message in red background:
This user's topologies are in danger of being unscheduled due to the owner's over-use of cluster resources.
Could someone please let us know why this happens and a way to resolve it?