rickcheng created ZEPPELIN-5465:
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Summary: "SERVICE_DOMAIN" may be null while Zeppelin server is
running outside k8s
Key: ZEPPELIN-5465
URL: https://issues.apache.org/jira/browse/ZEPPELIN-5465
Project: Zeppelin
Issue Type: Improvement
Components: Kubernetes
Affects Versions: 0.9.0
Reporter: rickcheng
Assignee: rickcheng
The function `sparkUiWebUrlFromTemplate` needs to use the variable
"SERVICE_DOMAIN", which is assigned to the default value of system environment
variable "SERVICE_DOMAIN".
However, user may not set the environment variable when Zeppelin server is
running outside of k8s, and it will get a *NullPointerExcepetion*:
{code:java}
NullPointerException: null value in entry: SERVICE_DOMAIN=null
{code}
Maybe it is better to set a non-null default value for it.
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