[YUNIKORN-1180] JSON parse error when creating placeholders

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.0.0
• Component/s: shim - kubernetes
• Labels: pull-request-available
• Target Version: 1.0.0
• Assignee: Peter Bacsko
• Reporter: Peter Bacsko
• Created: 20/Apr/22 16:29
• Updated: 04/May/22 23:52
• Resolved: 20/Apr/22 17:43

Description

When placeholders are created, the following error message is printed:

2022-04-20T15:43:04.720Z	ERROR	general/general.go:146	unable to get taskGroups for pod	{"namespace": "default", "name": "tg-groupa-gang-app-3-15", "error": "unexpected end of JSON input"}
github.com/apache/yunikorn-k8shim/pkg/appmgmt/general.(*Manager).getAppMetadata
	/home/bacskop/repos/incubator-yunikorn-k8shim/pkg/appmgmt/general/general.go:146
github.com/apache/yunikorn-k8shim/pkg/appmgmt/general.(*Manager).addPod
	/home/bacskop/repos/incubator-yunikorn-k8shim/pkg/appmgmt/general/general.go:239
k8s.io/client-go/tools/cache.ResourceEventHandlerFuncs.OnAdd
	/home/bacskop/go/pkg/mod/k8s.io/client-go@v0.20.11/tools/cache/controller.go:231
k8s.io/client-go/tools/cache.FilteringResourceEventHandler.OnAdd
	/home/bacskop/go/pkg/mod/k8s.io/client-go@v0.20.11/tools/cache/controller.go:264
k8s.io/client-go/tools/cache.(*processorListener).run.func1
	/home/bacskop/go/pkg/mod/k8s.io/client-go@v0.20.11/tools/cache/shared_informer.go:777
k8s.io/apimachinery/pkg/util/wait.BackoffUntil.func1
	/home/bacskop/go/pkg/mod/k8s.io/apimachinery@v0.20.11/pkg/util/wait/wait.go:155
k8s.io/apimachinery/pkg/util/wait.BackoffUntil
	/home/bacskop/go/pkg/mod/k8s.io/apimachinery@v0.20.11/pkg/util/wait/wait.go:156
k8s.io/apimachinery/pkg/util/wait.JitterUntil
	/home/bacskop/go/pkg/mod/k8s.io/apimachinery@v0.20.11/pkg/util/wait/wait.go:133
k8s.io/apimachinery/pkg/util/wait.Until
	/home/bacskop/go/pkg/mod/k8s.io/apimachinery@v0.20.11/pkg/util/wait/wait.go:90
k8s.io/client-go/tools/cache.(*processorListener).run
	/home/bacskop/go/pkg/mod/k8s.io/client-go@v0.20.11/tools/cache/shared_informer.go:771
k8s.io/apimachinery/pkg/util/wait.(*Group).Start.func1
	/home/bacskop/go/pkg/mod/k8s.io/apimachinery@v0.20.11/pkg/util/wait/wait.go:73

The error is most likely harmless. It was introduced by YUNIKORN-1161.

Issue Links

• is caused by: YUNIKORN-1161 Pods not linked to placeholders are stuck in Running state if YK is restarted
• links to: GitHub Pull Request #410