HDFS-17723. RBF: Optimize multiple mount point removal

[kokonguyen191]

Description of PR

https://issues.apache.org/jira/browse/HDFS-17723

Since each remove operation forces an update on all routers, removing a lot of mount points in one go when there are a decent number of routers can take a long time. It's better to just remove all of them in a batch and force update only once. Useful for nuking old unused mount points.

Reopened to add some small fixes and since it was bot closed

How was this patch tested?

UTs + have been in use in production environment for over a year

[hadoop-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	19m 4s		Docker mode activated.
			_ Prechecks _
+1 💚	dupname	0m 0s		No case conflicting files found.
+0 🆗	codespell	0m 1s		codespell was not available.
+0 🆗	detsecrets	0m 1s		detect-secrets was not available.
+0 🆗	buf	0m 1s		buf was not available.
+0 🆗	buf	0m 1s		buf 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	40m 56s		trunk passed
+1 💚	compile	1m 10s		trunk passed with JDK Ubuntu-21.0.10+7-Ubuntu-124.04
+1 💚	compile	1m 32s		trunk passed with JDK Ubuntu-17.0.18+8-Ubuntu-124.04.1
+1 💚	checkstyle	1m 2s		trunk passed
+1 💚	mvnsite	1m 39s		trunk passed
+1 💚	javadoc	1m 7s		trunk passed with JDK Ubuntu-21.0.10+7-Ubuntu-124.04
+1 💚	javadoc	1m 6s		trunk passed with JDK Ubuntu-17.0.18+8-Ubuntu-124.04.1
+1 💚	spotbugs	2m 28s		trunk passed
+1 💚	shadedclient	29m 42s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
-1 ❌	mvninstall	0m 59s	/patch-mvninstall-hadoop-hdfs-project_hadoop-hdfs-rbf.txt	hadoop-hdfs-rbf in the patch failed.
-1 ❌	compile	0m 39s	/patch-compile-hadoop-hdfs-project_hadoop-hdfs-rbf-jdkUbuntu-21.0.10+7-Ubuntu-124.04.txt	hadoop-hdfs-rbf in the patch failed with JDK Ubuntu-21.0.10+7-Ubuntu-124.04.
-1 ❌	cc	0m 39s	/patch-compile-hadoop-hdfs-project_hadoop-hdfs-rbf-jdkUbuntu-21.0.10+7-Ubuntu-124.04.txt	hadoop-hdfs-rbf in the patch failed with JDK Ubuntu-21.0.10+7-Ubuntu-124.04.
-1 ❌	javac	0m 39s	/patch-compile-hadoop-hdfs-project_hadoop-hdfs-rbf-jdkUbuntu-21.0.10+7-Ubuntu-124.04.txt	hadoop-hdfs-rbf in the patch failed with JDK Ubuntu-21.0.10+7-Ubuntu-124.04.
-1 ❌	compile	0m 59s	/patch-compile-hadoop-hdfs-project_hadoop-hdfs-rbf-jdkUbuntu-17.0.18+8-Ubuntu-124.04.1.txt	hadoop-hdfs-rbf in the patch failed with JDK Ubuntu-17.0.18+8-Ubuntu-124.04.1.
-1 ❌	cc	0m 59s	/patch-compile-hadoop-hdfs-project_hadoop-hdfs-rbf-jdkUbuntu-17.0.18+8-Ubuntu-124.04.1.txt	hadoop-hdfs-rbf in the patch failed with JDK Ubuntu-17.0.18+8-Ubuntu-124.04.1.
-1 ❌	javac	0m 59s	/patch-compile-hadoop-hdfs-project_hadoop-hdfs-rbf-jdkUbuntu-17.0.18+8-Ubuntu-124.04.1.txt	hadoop-hdfs-rbf in the patch failed with JDK Ubuntu-17.0.18+8-Ubuntu-124.04.1.
+1 💚	blanks	0m 0s		The patch has no blanks issues.
-0 ⚠️	checkstyle	0m 28s	/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	1m 4s	/patch-mvnsite-hadoop-hdfs-project_hadoop-hdfs-rbf.txt	hadoop-hdfs-rbf in the patch failed.
+1 💚	javadoc	0m 35s		the patch passed with JDK Ubuntu-21.0.10+7-Ubuntu-124.04
-1 ❌	javadoc	0m 33s	/results-javadoc-javadoc-hadoop-hdfs-project_hadoop-hdfs-rbf-jdkUbuntu-17.0.18+8-Ubuntu-124.04.1.txt	hadoop-hdfs-project_hadoop-hdfs-rbf-jdkUbuntu-17.0.18+8-Ubuntu-124.04.1 with JDK Ubuntu-17.0.18+8-Ubuntu-124.04.1 generated 14 new + 937 unchanged - 0 fixed = 951 total (was 937)
-1 ❌	spotbugs	0m 59s	/patch-spotbugs-hadoop-hdfs-project_hadoop-hdfs-rbf.txt	hadoop-hdfs-rbf in the patch failed.
+1 💚	shadedclient	31m 58s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
-1 ❌	unit	1m 4s	/patch-unit-hadoop-hdfs-project_hadoop-hdfs-rbf.txt	hadoop-hdfs-rbf in the patch failed.
+1 💚	asflicense	0m 36s		The patch does not generate ASF License warnings.
		137m 13s

Subsystem	Report/Notes
Docker	ClientAPI=1.54 ServerAPI=1.54 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8396/1/artifact/out/Dockerfile
GITHUB PR	#8396
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets cc buflint bufcompat
uname	Linux f261e0962b1a 5.15.0-173-generic #183-Ubuntu SMP Fri Mar 6 13:29:34 UTC 2026 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/bin/hadoop.sh
git revision	trunk / c379005
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-8396/1/testReport/
Max. process+thread count	610 (vs. ulimit of 10000)
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-8396/1/console
versions	git=2.43.0 maven=3.9.11 spotbugs=4.9.7
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[KeeProMise]

Hi @kokonguyen191 Please check the Jenkins error first.

[hadoop-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	1m 47s		Docker mode activated.
			_ Prechecks _
+1 💚	dupname	0m 0s		No case conflicting files found.
+0 🆗	codespell	0m 1s		codespell was not available.
+0 🆗	detsecrets	0m 1s		detect-secrets was not available.
+0 🆗	buf	0m 1s		buf was not available.
+0 🆗	buf	0m 1s		buf 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	42m 54s		trunk passed
+1 💚	compile	1m 9s		trunk passed with JDK Ubuntu-21.0.10+7-Ubuntu-124.04
+1 💚	compile	1m 28s		trunk passed with JDK Ubuntu-17.0.18+8-Ubuntu-124.04.1
+1 💚	checkstyle	0m 56s		trunk passed
+1 💚	mvnsite	1m 33s		trunk passed
+1 💚	javadoc	1m 2s		trunk passed with JDK Ubuntu-21.0.10+7-Ubuntu-124.04
+1 💚	javadoc	0m 56s		trunk passed with JDK Ubuntu-17.0.18+8-Ubuntu-124.04.1
+1 💚	spotbugs	2m 29s		trunk passed
+1 💚	shadedclient	30m 0s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
+1 💚	mvninstall	1m 3s		the patch passed
+1 💚	compile	0m 38s		the patch passed with JDK Ubuntu-21.0.10+7-Ubuntu-124.04
+1 💚	cc	0m 38s		the patch passed
+1 💚	javac	0m 38s		the patch passed
+1 💚	compile	1m 4s		the patch passed with JDK Ubuntu-17.0.18+8-Ubuntu-124.04.1
+1 💚	cc	1m 4s		the patch passed
+1 💚	javac	1m 4s		the patch passed
+1 💚	blanks	0m 0s		The patch has no blanks issues.
+1 💚	checkstyle	0m 26s		the patch passed
+1 💚	mvnsite	1m 10s		the patch passed
+1 💚	javadoc	0m 33s		the patch passed with JDK Ubuntu-21.0.10+7-Ubuntu-124.04
-1 ❌	javadoc	0m 34s	/results-javadoc-javadoc-hadoop-hdfs-project_hadoop-hdfs-rbf-jdkUbuntu-17.0.18+8-Ubuntu-124.04.1.txt	hadoop-hdfs-project_hadoop-hdfs-rbf-jdkUbuntu-17.0.18+8-Ubuntu-124.04.1 with JDK Ubuntu-17.0.18+8-Ubuntu-124.04.1 generated 14 new + 937 unchanged - 0 fixed = 951 total (was 937)
+1 💚	spotbugs	2m 14s		the patch passed
+1 💚	shadedclient	29m 7s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
+1 💚	unit	51m 25s		hadoop-hdfs-rbf in the patch passed.
+1 💚	asflicense	0m 35s		The patch does not generate ASF License warnings.
		174m 39s

Subsystem	Report/Notes
Docker	ClientAPI=1.54 ServerAPI=1.54 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8396/2/artifact/out/Dockerfile
GITHUB PR	#8396
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets cc buflint bufcompat
uname	Linux 63939900d892 5.15.0-173-generic #183-Ubuntu SMP Fri Mar 6 13:29:34 UTC 2026 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/bin/hadoop.sh
git revision	trunk / 7d83166
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-8396/2/testReport/
Max. process+thread count	4341 (vs. ulimit of 10000)
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-8396/2/console
versions	git=2.43.0 maven=3.9.11 spotbugs=4.9.7
Powered by	Apache Yetus 0.14.1 https://yetus.apache.org

This message was automatically generated.

[hadoop-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	1m 4s		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.
+0 🆗	buf	0m 0s		buf was not available.
+0 🆗	buf	0m 0s		buf 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	42m 46s		trunk passed
+1 💚	compile	1m 4s		trunk passed with JDK Ubuntu-21.0.10+7-Ubuntu-124.04
+1 💚	compile	1m 33s		trunk passed with JDK Ubuntu-17.0.18+8-Ubuntu-124.04.1
+1 💚	checkstyle	0m 54s		trunk passed
+1 💚	mvnsite	1m 38s		trunk passed
+1 💚	javadoc	0m 57s		trunk passed with JDK Ubuntu-21.0.10+7-Ubuntu-124.04
+1 💚	javadoc	0m 56s		trunk passed with JDK Ubuntu-17.0.18+8-Ubuntu-124.04.1
+1 💚	spotbugs	2m 28s		trunk passed
+1 💚	shadedclient	29m 48s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
+1 💚	mvninstall	1m 4s		the patch passed
+1 💚	compile	0m 38s		the patch passed with JDK Ubuntu-21.0.10+7-Ubuntu-124.04
+1 💚	cc	0m 38s		the patch passed
+1 💚	javac	0m 38s		the patch passed
+1 💚	compile	1m 1s		the patch passed with JDK Ubuntu-17.0.18+8-Ubuntu-124.04.1
+1 💚	cc	1m 1s		the patch passed
+1 💚	javac	1m 1s		the patch passed
+1 💚	blanks	0m 0s		The patch has no blanks issues.
+1 💚	checkstyle	0m 25s		the patch passed
+1 💚	mvnsite	1m 13s		the patch passed
+1 💚	javadoc	0m 33s		the patch passed with JDK Ubuntu-21.0.10+7-Ubuntu-124.04
-1 ❌	javadoc	0m 31s	/results-javadoc-javadoc-hadoop-hdfs-project_hadoop-hdfs-rbf-jdkUbuntu-17.0.18+8-Ubuntu-124.04.1.txt	hadoop-hdfs-project_hadoop-hdfs-rbf-jdkUbuntu-17.0.18+8-Ubuntu-124.04.1 with JDK Ubuntu-17.0.18+8-Ubuntu-124.04.1 generated 14 new + 937 unchanged - 0 fixed = 951 total (was 937)
+1 💚	spotbugs	2m 15s		the patch passed
+1 💚	shadedclient	29m 1s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
+1 💚	unit	51m 3s		hadoop-hdfs-rbf in the patch passed.
+1 💚	asflicense	0m 36s		The patch does not generate ASF License warnings.
		172m 55s

Subsystem	Report/Notes
Docker	ClientAPI=1.54 ServerAPI=1.54 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8396/3/artifact/out/Dockerfile
GITHUB PR	#8396
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets cc buflint bufcompat
uname	Linux cc3f4363e4bf 5.15.0-173-generic #183-Ubuntu SMP Fri Mar 6 13:29:34 UTC 2026 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/bin/hadoop.sh
git revision	trunk / 7d83166
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-8396/3/testReport/
Max. process+thread count	4496 (vs. ulimit of 10000)
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-8396/3/console
versions	git=2.43.0 maven=3.9.11 spotbugs=4.9.7
Powered by	Apache Yetus 0.14.1 https://yetus.apache.org

This message was automatically generated.

[kokonguyen191]

PR doesn't change any of the files listed in the javadoc failure report