Min memory that can be specified for ray kubernetes workers in ray1.4

Ray Clusters Kubernetes
1

Hello,

We see that worker pods terminating when we set worker memory to 256Mi, is there a suggestion on min memory requirement for workers in ray?

$ kubectl -n ray get pods
NAME                                    READY   STATUS              RESTARTS   AGE
example-cluster-ray-head-type-scx74     1/1     Running             0          61s
example-cluster-ray-worker-type-v6dzd   0/1     ContainerCreating   0          1s
example-cluster-ray-worker-type-vgdn5   0/1     Terminating         0          17s

Thanks