我有一个 k8 工作，它带来了多个 pod。该作业用于负载测试，因此所有 pod 都需要同时出现。在所有要调度的 pod 的节点都可用之前，不应启动作业。我遇到了 kube-batch https://github.com/kubernetes-sigs/kube-batch来做这个调度。我有几个问题：
1.如何只为集群中的一个命名空间启用kube-batch？
2.按照教程安装 kube-batch。但是 pod 在启动时失败并出现以下错误。如何解决此错误？
I1204 20:07:55.911393 1 allocate.go:96] Queue <default> is overused, ignore it.
I1204 20:07:55.911399 1 allocate.go:194] Leaving Allocate ...
I1204 20:07:55.911407 1 backfill.go:41] Enter Backfill ...
I1204 20:07:55.911413 1 backfill.go:71] Leaving Backfill ...
E1204 20:07:55.911521 1 runtime.go:69] Observed a panic: "invalid memory address or nil pointer dereference" (runtime error: invalid memory address or nil pointer dereference)
/home/root1/servicecomb/go/src/github.com/kubernetes-sigs/kube-batch/vendor/k8s.io/apimachinery/pkg/util/runtime/runtime.go:76
/home/root1/servicecomb/go/src/github.com/kubernetes-sigs/kube-batch/vendor/k8s.io/apimachinery/pkg/util/runtime/runtime.go:65
/home/root1/servicecomb/go/src/github.com/kubernetes-sigs/kube-batch/vendor/k8s.io/apimachinery/pkg/util/runtime/runtime.go:51
/usr/local/go/src/runtime/asm_amd64.s:522
/usr/local/go/src/runtime/panic.go:513
/usr/local/go/src/runtime/panic.go:82
/usr/local/go/src/runtime/signal_unix.go:390
/home/root1/servicecomb/go/src/github.com/kubernetes-sigs/kube-batch/pkg/scheduler/framework/session.go:368
/home/root1/servicecomb/go/src/github.com/kubernetes-sigs/kube-batch/pkg/scheduler/plugins/gang/gang.go:154
/home/root1/servicecomb/go/src/github.com/kubernetes-sigs/kube-batch/pkg/scheduler/framework/framework.go:58
/home/root1/servicecomb/go/src/github.com/kubernetes-sigs/kube-batch/pkg/scheduler/scheduler.go:102
/home/root1/servicecomb/go/src/github.com/kubernetes-sigs/kube-batch/pkg/scheduler/scheduler.go:85
/home/root1/servicecomb/go/src/github.com/kubernetes-sigs/kube-batch/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:133
/home/root1/servicecomb/go/src/github.com/kubernetes-sigs/kube-batch/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:134
/home/root1/servicecomb/go/src/github.com/kubernetes-sigs/kube-batch/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:88
/usr/local/go/src/runtime/asm_amd64.s:1333
panic: runtime error: invalid memory address or nil pointer dereference [recovered]
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x148 pc=0x10ab979]