HDFS-17884. Remove forked Guava TimeoutFuture

[pan3793]

Description of PR

Those classes were forked from Guava in HDFS-11511. During those days, Hadoop used Guava 11, which didn't support TimeoutFuture.

Now Hadoop uses Guava 33, so it's unnecessary to maintain those forked classes, this change simplifies the codebase, also eliminates sun.misc.Unsafe usage.

How was this patch tested?

Pass UT added by HDFS-11511

$ ./mvnw -pl :hadoop-hdfs -am clean install -DskipTests
$ ./mvnw -pl :hadoop-hdfs test "-Dtest=org.apache.hadoop.hdfs.server.datanode.checker.Test*"
...
[INFO] -------------------------------------------------------
[INFO]  T E S T S
[INFO] -------------------------------------------------------
[INFO] Running org.apache.hadoop.hdfs.server.datanode.checker.TestDatasetVolumeChecker
OpenJDK 64-Bit Server VM warning: Sharing is only supported for boot loader classes because bootstrap classpath has been appended
[INFO] Tests run: 12, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.991 s -- in org.apache.hadoop.hdfs.server.datanode.checker.TestDatasetVolumeChecker
[INFO] Running org.apache.hadoop.hdfs.server.datanode.checker.TestDatasetVolumeCheckerFailures
OpenJDK 64-Bit Server VM warning: Sharing is only supported for boot loader classes because bootstrap classpath has been appended
[INFO] Tests run: 3, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 1.858 s -- in org.apache.hadoop.hdfs.server.datanode.checker.TestDatasetVolumeCheckerFailures
[INFO] Running org.apache.hadoop.hdfs.server.datanode.checker.TestDatasetVolumeCheckerTimeout
OpenJDK 64-Bit Server VM warning: Sharing is only supported for boot loader classes because bootstrap classpath has been appended
[INFO] Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.836 s -- in org.apache.hadoop.hdfs.server.datanode.checker.TestDatasetVolumeCheckerTimeout
[INFO] Running org.apache.hadoop.hdfs.server.datanode.checker.TestThrottledAsyncChecker
[INFO] Tests run: 5, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.708 s -- in org.apache.hadoop.hdfs.server.datanode.checker.TestThrottledAsyncChecker
[INFO] Running org.apache.hadoop.hdfs.server.datanode.checker.TestThrottledAsyncCheckerTimeout
OpenJDK 64-Bit Server VM warning: Sharing is only supported for boot loader classes because bootstrap classpath has been appended
[INFO] Tests run: 3, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.649 s -- in org.apache.hadoop.hdfs.server.datanode.checker.TestThrottledAsyncCheckerTimeout
[INFO] Running org.apache.hadoop.hdfs.server.datanode.checker.TestStorageLocationChecker
OpenJDK 64-Bit Server VM warning: Sharing is only supported for boot loader classes because bootstrap classpath has been appended
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 1.898 s -- in org.apache.hadoop.hdfs.server.datanode.checker.TestStorageLocationChecker
[INFO] 
[INFO] Results:
[INFO] 
[INFO] Tests run: 30, Failures: 0, Errors: 0, Skipped: 0
...

For code changes:

• Does the title or this PR starts with the corresponding JIRA issue id (HDFS-17884)?
• Object storage: have the integration tests been executed and the endpoint declared according to the connector-specific documentation?
• If adding new dependencies to the code, are these dependencies licensed in a way that is compatible for inclusion under ASF 2.0?
• If applicable, have you updated the LICENSE, LICENSE-binary, NOTICE-binary files?

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[slfan1989]

@zhtttylz @huangzhaobo99 Could you please review this PR? Thanks a lot!

[hadoop-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	0m 22s		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 2 new or modified test files.
			_ trunk Compile Tests _
+1 💚	mvninstall	27m 44s		trunk passed
+1 💚	compile	1m 2s		trunk passed with JDK Ubuntu-21.0.10+7-Ubuntu-124.04
+1 💚	compile	0m 55s		trunk passed with JDK Ubuntu-17.0.18+8-Ubuntu-124.04.1
+1 💚	checkstyle	0m 57s		trunk passed
+1 💚	mvnsite	1m 2s		trunk passed
+1 💚	javadoc	0m 48s		trunk passed with JDK Ubuntu-21.0.10+7-Ubuntu-124.04
+1 💚	javadoc	0m 48s		trunk passed with JDK Ubuntu-17.0.18+8-Ubuntu-124.04.1
+1 💚	spotbugs	2m 14s		trunk passed
+1 💚	shadedclient	17m 1s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
+1 💚	mvninstall	0m 42s		the patch passed
+1 💚	compile	0m 39s		the patch passed with JDK Ubuntu-21.0.10+7-Ubuntu-124.04
+1 💚	javac	0m 39s		hadoop-hdfs-project_hadoop-hdfs-jdkUbuntu-21.0.10+7-Ubuntu-124.04 with JDK Ubuntu-21.0.10+7-Ubuntu-124.04 generated 0 new + 0 unchanged - 7 fixed = 0 total (was 7)
+1 💚	compile	0m 41s		the patch passed with JDK Ubuntu-17.0.18+8-Ubuntu-124.04.1
+1 💚	javac	0m 41s		hadoop-hdfs-project_hadoop-hdfs-jdkUbuntu-17.0.18+8-Ubuntu-124.04.1 with JDK Ubuntu-17.0.18+8-Ubuntu-124.04.1 generated 0 new + 0 unchanged - 7 fixed = 0 total (was 7)
+1 💚	blanks	0m 0s		The patch has no blanks issues.
+1 💚	checkstyle	0m 42s		hadoop-hdfs-project/hadoop-hdfs: The patch generated 0 new + 6 unchanged - 22 fixed = 6 total (was 28)
+1 💚	mvnsite	0m 45s		the patch passed
+1 💚	javadoc	0m 35s		the patch passed with JDK Ubuntu-21.0.10+7-Ubuntu-124.04
+1 💚	javadoc	0m 36s		the patch passed with JDK Ubuntu-17.0.18+8-Ubuntu-124.04.1
+1 💚	spotbugs	2m 0s		the patch passed
+1 💚	shadedclient	16m 22s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
-1 ❌	unit	182m 13s	/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt	hadoop-hdfs in the patch passed.
+1 💚	asflicense	0m 26s		The patch does not generate ASF License warnings.
		257m 52s

Reason	Tests
Failed junit tests	hadoop.hdfs.server.balancer.TestBalancerWithHANameNodes
	hadoop.hdfs.TestBlockRecoveryCauseStandbyNameNodeCrash

Subsystem	Report/Notes
Docker	ClientAPI=1.53 ServerAPI=1.53 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8268/1/artifact/out/Dockerfile
GITHUB PR	#8268
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets
uname	Linux e2fe9ad6991f 5.15.0-164-generic #174-Ubuntu SMP Fri Nov 14 20:25:16 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/bin/hadoop.sh
git revision	trunk / 02dc1f9
Default Java	Ubuntu-17.0.18+8-Ubuntu-124.04.1
Multi-JDK versions	/usr/lib/jvm/java-21-openjdk-amd64:Ubuntu-21.0.10+7-Ubuntu-124.04 /usr/lib/jvm/java-17-openjdk-amd64:Ubuntu-17.0.18+8-Ubuntu-124.04.1
Test Results	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8268/1/testReport/
Max. process+thread count	4838 (vs. ulimit of 5500)
modules	C: hadoop-hdfs-project/hadoop-hdfs U: hadoop-hdfs-project/hadoop-hdfs
Console output	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8268/1/console
versions	git=2.43.0 maven=3.9.11 spotbugs=4.9.7
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