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new a911310f696e [SPARK-54877][UI] Make display stacktrace on UI error
page configurable
a911310f696e is described below
commit a911310f696ef97d67193885f28876281ef9d57b
Author: Cheng Pan <[email protected]>
AuthorDate: Fri Jan 2 12:58:23 2026 +0900
[SPARK-54877][UI] Make display stacktrace on UI error page configurable
### What changes were proposed in this pull request?
This PR adds a new configuration `spark.ui.showErrorStacks` to allow user
to disable displaying stacktrace on UI error page.
### Why are the changes needed?
To avoid exposing much internal info of the service for security purposes.
### Does this PR introduce _any_ user-facing change?
No, the default value of the newly added configuration does not change the
existing behavior.
### How was this patch tested?
Manually tested, modified AllJobsPage.scala to simulate an internal error.
Run with `--conf spark.ui.showErrorStacks=true` (default behavior)
<img width="894" height="756" alt="image"
src="https://github.com/user-attachments/assets/cb2e77ef-175a-43b0-bab2-1cb9e294be27";
/>
Run with `--conf spark.ui.showErrorStacks=false`
<img width="885" height="206" alt="image"
src="https://github.com/user-attachments/assets/50d53286-eb11-466e-8c80-52a88a1806e1";
/>
### Was this patch authored or co-authored using generative AI tooling?
No.
Closes #53656 from pan3793/SPARK-54877.
Authored-by: Cheng Pan <[email protected]>
Signed-off-by: Kousuke Saruta <[email protected]>
---
core/src/main/scala/org/apache/spark/internal/config/UI.scala | 6 ++++++
core/src/main/scala/org/apache/spark/ui/JettyUtils.scala | 2 +-
2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/core/src/main/scala/org/apache/spark/internal/config/UI.scala
b/core/src/main/scala/org/apache/spark/internal/config/UI.scala
index fe5a52debdaf..b3c564c5b6f9 100644
--- a/core/src/main/scala/org/apache/spark/internal/config/UI.scala
+++ b/core/src/main/scala/org/apache/spark/internal/config/UI.scala
@@ -271,4 +271,10 @@ private[spark] object UI {
.version("4.0.0")
.timeConf(TimeUnit.MILLISECONDS)
.createWithDefaultString("30s")
+
+ val UI_SHOW_ERROR_STACKS = ConfigBuilder("spark.ui.showErrorStacks")
+ .doc("Whether to display stack traces in the UI error pages.")
+ .version("4.2.0")
+ .booleanConf
+ .createWithDefault(true)
}
diff --git a/core/src/main/scala/org/apache/spark/ui/JettyUtils.scala
b/core/src/main/scala/org/apache/spark/ui/JettyUtils.scala
index bd7848c76437..fedc6bb27309 100644
--- a/core/src/main/scala/org/apache/spark/ui/JettyUtils.scala
+++ b/core/src/main/scala/org/apache/spark/ui/JettyUtils.scala
@@ -265,7 +265,7 @@ private[spark] object JettyUtils extends Logging {
val server = new Server(pool)
val errorHandler = new ErrorHandler()
- errorHandler.setShowStacks(true)
+ errorHandler.setShowStacks(conf.get(UI_SHOW_ERROR_STACKS))
errorHandler.setServer(server)
server.addBean(errorHandler)
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