Pascal GILLET created SPARK-33579:
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Summary: Executors blank page behind proxy
Key: SPARK-33579
URL: https://issues.apache.org/jira/browse/SPARK-33579
Project: Spark
Issue Type: Bug
Components: Spark Core
Affects Versions: 3.0.1
Environment: Spark 3.0.1 on Kubernetes
Reporter: Pascal GILLET
When accessing the Web UI behind a proxy (e.g. a Kubernetes ingress), executors
page is blank.
In{{ /core/src/main/resources/org/apache/spark/ui/static/utils.js}}, we should
avoid the use of location.origin when constructing URLs for internal API calls
within the JavaScript.
Instead, we should use {{apiRoot}} global variable.
On one hand, it would allow to build relative URLs. On the other hand,
{{apiRoot}} reflects the Spark property {{spark.ui.proxyBase}} which can be set
to change the root path of the Web UI.
If {{spark.ui.proxyBase}} is actually set, original URLs become incorrect, and
we end up with an executors blank page.
I encounter this bug when accessing the Web UI behind a proxy (in my case a
Kubernetes Ingress).
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