MAPREDUCE-7541. Fix AM WebUI attempts page

[dmmkr]

Description of PR

Fix AM WebUI attempts page

How was this patch tested?

Validated with updating the jar

For code changes:

• Does the title or this PR starts with the corresponding JIRA issue id (e.g. 'HADOOP-17799. Your PR title ...')?
• Object storage: have the integration tests been executed and the endpoint declared according to the connector-specific documentation?
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• If applicable, have you updated the LICENSE, LICENSE-binary, NOTICE-binary files?

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[Copilot]

Pull request overview

This PR aims to fix the MapReduce ApplicationMaster (AM) Web UI “attempts” page by adjusting Guice bindings in the AM web application so the UI can render correctly with the expected injected state.

Changes:

• Adds an explicit Guice binding for App within AMWebApp.setup().
• Introduces a Guice scope annotation import to support the new binding.

---

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[hadoop-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	0m 54s		Docker mode activated.
			_ Prechecks _
+1 💚	dupname	0m 0s		No case conflicting files found.
+0 🆗	codespell	0m 0s		codespell was not available.
+0 🆗	detsecrets	0m 0s		detect-secrets was not available.
+1 💚	@author	0m 0s		The patch does not contain any @author tags.
+1 💚	test4tests	0m 0s		The patch appears to include 1 new or modified test files.
			_ trunk Compile Tests _
+1 💚	mvninstall	48m 14s		trunk passed
+1 💚	compile	0m 59s		trunk passed with JDK Ubuntu-21.0.11+10-1-24.04.2-Ubuntu
+1 💚	compile	1m 0s		trunk passed with JDK Ubuntu-17.0.19+10-1-24.04.2-Ubuntu
+1 💚	checkstyle	0m 56s		trunk passed
+1 💚	mvnsite	1m 2s		trunk passed
+1 💚	javadoc	0m 58s		trunk passed with JDK Ubuntu-21.0.11+10-1-24.04.2-Ubuntu
+1 💚	javadoc	0m 56s		trunk passed with JDK Ubuntu-17.0.19+10-1-24.04.2-Ubuntu
+1 💚	spotbugs	1m 39s		trunk passed
+1 💚	shadedclient	36m 16s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
+1 💚	mvninstall	0m 32s		the patch passed
+1 💚	compile	0m 30s		the patch passed with JDK Ubuntu-21.0.11+10-1-24.04.2-Ubuntu
+1 💚	javac	0m 30s		the patch passed
+1 💚	compile	0m 32s		the patch passed with JDK Ubuntu-17.0.19+10-1-24.04.2-Ubuntu
+1 💚	javac	0m 32s		the patch passed
-1 ❌	blanks	0m 0s	/blanks-tabs.txt	The patch 1 line(s) with tabs.
-0 ⚠️	checkstyle	0m 25s	/results-checkstyle-hadoop-mapreduce-project_hadoop-mapreduce-client_hadoop-mapreduce-client-app.txt	hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app: The patch generated 1 new + 11 unchanged - 0 fixed = 12 total (was 11)
+1 💚	mvnsite	0m 35s		the patch passed
+1 💚	javadoc	0m 27s		the patch passed with JDK Ubuntu-21.0.11+10-1-24.04.2-Ubuntu
+1 💚	javadoc	0m 27s		the patch passed with JDK Ubuntu-17.0.19+10-1-24.04.2-Ubuntu
+1 💚	spotbugs	1m 19s		the patch passed
+1 💚	shadedclient	34m 30s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
+1 💚	unit	8m 36s		hadoop-mapreduce-client-app in the patch passed.
+1 💚	asflicense	0m 37s		The patch does not generate ASF License warnings.
		143m 23s

Subsystem	Report/Notes
Docker	ClientAPI=1.55 ServerAPI=1.55 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8652/2/artifact/out/Dockerfile
GITHUB PR	#8652
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets
uname	Linux 555964efe341 5.15.0-181-generic #191-Ubuntu SMP Fri May 22 19:09:02 UTC 2026 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/bin/hadoop.sh
git revision	trunk / c054343
Default Java	Ubuntu-17.0.19+10-1-24.04.2-Ubuntu
Multi-JDK versions	/usr/lib/jvm/java-21-openjdk-amd64:Ubuntu-21.0.11+10-1-24.04.2-Ubuntu /usr/lib/jvm/java-17-openjdk-amd64:Ubuntu-17.0.19+10-1-24.04.2-Ubuntu
Test Results	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8652/2/testReport/
Max. process+thread count	599 (vs. ulimit of 10000)
modules	C: hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app U: hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app
Console output	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8652/2/console
versions	git=2.43.0 maven=3.9.15 spotbugs=4.9.7
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