HDFS-17656. [ARR] RouterNamenodeProtocol and RouterUserProtocol supports asynchronous rpc.

[KeeProMise]

Description of PR

please see: https://issues.apache.org/jira/browse/HDFS-17656 and https://issues.apache.org/jira/browse/HDFS-17531

How was this patch tested?

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?
• 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?

[hadoop-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	6m 55s		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 doesn't appear to include any new or modified tests. Please justify why no new tests are needed for this patch. Also please list what manual steps were performed to verify this patch.
			_ HDFS-17531 Compile Tests _
+1 💚	mvninstall	33m 53s		HDFS-17531 passed
+1 💚	compile	0m 29s		HDFS-17531 passed with JDK Ubuntu-11.0.25+9-post-Ubuntu-1ubuntu120.04
+1 💚	compile	0m 22s		HDFS-17531 passed with JDK Private Build-1.8.0_432-8u432-gaus1-0ubuntu220.04-ga
+1 💚	checkstyle	0m 22s		HDFS-17531 passed
+1 💚	mvnsite	0m 30s		HDFS-17531 passed
+1 💚	javadoc	0m 30s		HDFS-17531 passed with JDK Ubuntu-11.0.25+9-post-Ubuntu-1ubuntu120.04
+1 💚	javadoc	0m 20s		HDFS-17531 passed with JDK Private Build-1.8.0_432-8u432-gaus1-0ubuntu220.04-ga
+1 💚	spotbugs	0m 56s		HDFS-17531 passed
+1 💚	shadedclient	20m 7s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
-1 ❌	mvninstall	0m 16s	/patch-mvninstall-hadoop-hdfs-project_hadoop-hdfs-rbf.txt	hadoop-hdfs-rbf in the patch failed.
-1 ❌	compile	0m 21s	/patch-compile-hadoop-hdfs-project_hadoop-hdfs-rbf-jdkUbuntu-11.0.25+9-post-Ubuntu-1ubuntu120.04.txt	hadoop-hdfs-rbf in the patch failed with JDK Ubuntu-11.0.25+9-post-Ubuntu-1ubuntu120.04.
-1 ❌	javac	0m 21s	/patch-compile-hadoop-hdfs-project_hadoop-hdfs-rbf-jdkUbuntu-11.0.25+9-post-Ubuntu-1ubuntu120.04.txt	hadoop-hdfs-rbf in the patch failed with JDK Ubuntu-11.0.25+9-post-Ubuntu-1ubuntu120.04.
-1 ❌	compile	0m 16s	/patch-compile-hadoop-hdfs-project_hadoop-hdfs-rbf-jdkPrivateBuild-1.8.0_432-8u432-gaus1-0ubuntu220.04-ga.txt	hadoop-hdfs-rbf in the patch failed with JDK Private Build-1.8.0_432-8u432-gaus1-0ubuntu220.04-ga.
-1 ❌	javac	0m 16s	/patch-compile-hadoop-hdfs-project_hadoop-hdfs-rbf-jdkPrivateBuild-1.8.0_432-8u432-gaus1-0ubuntu220.04-ga.txt	hadoop-hdfs-rbf in the patch failed with JDK Private Build-1.8.0_432-8u432-gaus1-0ubuntu220.04-ga.
+1 💚	blanks	0m 0s		The patch has no blanks issues.
-0 ⚠️	checkstyle	0m 12s	/results-checkstyle-hadoop-hdfs-project_hadoop-hdfs-rbf.txt	hadoop-hdfs-project/hadoop-hdfs-rbf: The patch generated 1 new + 1 unchanged - 0 fixed = 2 total (was 1)
-1 ❌	mvnsite	0m 16s	/patch-mvnsite-hadoop-hdfs-project_hadoop-hdfs-rbf.txt	hadoop-hdfs-rbf in the patch failed.
-1 ❌	javadoc	0m 15s	/patch-javadoc-hadoop-hdfs-project_hadoop-hdfs-rbf-jdkUbuntu-11.0.25+9-post-Ubuntu-1ubuntu120.04.txt	hadoop-hdfs-rbf in the patch failed with JDK Ubuntu-11.0.25+9-post-Ubuntu-1ubuntu120.04.
-1 ❌	javadoc	0m 16s	/results-javadoc-javadoc-hadoop-hdfs-project_hadoop-hdfs-rbf-jdkPrivateBuild-1.8.0_432-8u432-gaus1-0ubuntu220.04-ga.txt	hadoop-hdfs-project_hadoop-hdfs-rbf-jdkPrivateBuild-1.8.0_432-8u432-gaus1-0ubuntu220.04-ga with JDK Private Build-1.8.0_432-8u432-gaus1-0ubuntu220.04-ga generated 1 new + 0 unchanged - 0 fixed = 1 total (was 0)
-1 ❌	spotbugs	0m 16s	/patch-spotbugs-hadoop-hdfs-project_hadoop-hdfs-rbf.txt	hadoop-hdfs-rbf in the patch failed.
+1 💚	shadedclient	21m 28s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
-1 ❌	unit	0m 19s	/patch-unit-hadoop-hdfs-project_hadoop-hdfs-rbf.txt	hadoop-hdfs-rbf in the patch failed.
-1 ❌	asflicense	0m 24s	/results-asflicense.txt	The patch generated 2 ASF License warnings.
		88m 36s

Subsystem	Report/Notes
Docker	ClientAPI=1.47 ServerAPI=1.47 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7159/1/artifact/out/Dockerfile
GITHUB PR	#7159
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets
uname	Linux d6f4da9707fb 5.15.0-124-generic #134-Ubuntu SMP Fri Sep 27 20:20:17 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/bin/hadoop.sh
git revision	HDFS-17531 / 6357bd8
Default Java	Private Build-1.8.0_432-8u432-gaus1-0ubuntu220.04-ga
Multi-JDK versions	/usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.25+9-post-Ubuntu-1ubuntu120.04 /usr/lib/jvm/java-8-openjdk-amd64:Private Build-1.8.0_432-8u432-gaus1-0ubuntu220.04-ga
Test Results	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7159/1/testReport/
Max. process+thread count	552 (vs. ulimit of 5500)
modules	C: hadoop-hdfs-project/hadoop-hdfs-rbf U: hadoop-hdfs-project/hadoop-hdfs-rbf
Console output	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7159/1/console
versions	git=2.25.1 maven=3.6.3 spotbugs=4.2.2
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