YARN-11957. Frequent NM Label Updates Cause Longer RM Failover Time

[zhangxiping1]

Description of PR

In our scenario, the labels of a batch of nodes are updated periodically. After the active RM had been running for a long time, an active-standby switchover was triggered, and the switchover took an unusually long time. By analyzing the logs and jstack information related to the standby RM's transition to active, we found that a core thread, "SchedulerEventDispatcher:Event Processor", had been continuously processing updateNodeLabelsAndQueueResource. The service logs also showed a large number of "REPLACE labels on nodes" messages.

[hadoop-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	0m 21s		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.
+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 _
+0 🆗	mvndep	1m 34s		Maven dependency ordering for branch
+1 💚	mvninstall	25m 11s		trunk passed
+1 💚	compile	3m 27s		trunk passed with JDK Ubuntu-21.0.10+7-Ubuntu-124.04
+1 💚	compile	3m 32s		trunk passed with JDK Ubuntu-17.0.18+8-Ubuntu-124.04.1
+1 💚	checkstyle	1m 23s		trunk passed
+1 💚	mvnsite	1m 31s		trunk passed
+1 💚	javadoc	1m 27s		trunk passed with JDK Ubuntu-21.0.10+7-Ubuntu-124.04
+1 💚	javadoc	1m 27s		trunk passed with JDK Ubuntu-17.0.18+8-Ubuntu-124.04.1
+1 💚	spotbugs	3m 0s		trunk passed
+1 💚	shadedclient	16m 16s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
+0 🆗	mvndep	0m 17s		Maven dependency ordering for patch
-1 ❌	mvninstall	0m 24s	/patch-mvninstall-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-common.txt	hadoop-yarn-common in the patch failed.
-1 ❌	compile	0m 29s	/patch-compile-hadoop-yarn-project_hadoop-yarn-jdkUbuntu-21.0.10+7-Ubuntu-124.04.txt	hadoop-yarn in the patch failed with JDK Ubuntu-21.0.10+7-Ubuntu-124.04.
-1 ❌	javac	0m 29s	/patch-compile-hadoop-yarn-project_hadoop-yarn-jdkUbuntu-21.0.10+7-Ubuntu-124.04.txt	hadoop-yarn in the patch failed with JDK Ubuntu-21.0.10+7-Ubuntu-124.04.
-1 ❌	compile	0m 36s	/patch-compile-hadoop-yarn-project_hadoop-yarn-jdkUbuntu-17.0.18+8-Ubuntu-124.04.1.txt	hadoop-yarn in the patch failed with JDK Ubuntu-17.0.18+8-Ubuntu-124.04.1.
-1 ❌	javac	0m 36s	/patch-compile-hadoop-yarn-project_hadoop-yarn-jdkUbuntu-17.0.18+8-Ubuntu-124.04.1.txt	hadoop-yarn 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	1m 3s	/results-checkstyle-hadoop-yarn-project_hadoop-yarn.txt	hadoop-yarn-project/hadoop-yarn: The patch generated 3 new + 171 unchanged - 0 fixed = 174 total (was 171)
-1 ❌	mvnsite	0m 23s	/patch-mvnsite-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-common.txt	hadoop-yarn-common in the patch failed.
+1 💚	javadoc	0m 48s		the patch passed with JDK Ubuntu-21.0.10+7-Ubuntu-124.04
+1 💚	javadoc	0m 48s		the patch passed with JDK Ubuntu-17.0.18+8-Ubuntu-124.04.1
-1 ❌	spotbugs	0m 20s	/patch-spotbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-common.txt	hadoop-yarn-common in the patch failed.
-1 ❌	shadedclient	6m 0s		patch has errors when building and testing our client artifacts.
			_ Other Tests _
-1 ❌	unit	0m 34s	/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-api.txt	hadoop-yarn-api in the patch passed.
-1 ❌	unit	0m 25s	/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-common.txt	hadoop-yarn-common in the patch failed.
+1 💚	asflicense	0m 21s		The patch does not generate ASF License warnings.
		75m 13s

Reason	Tests
Failed junit tests	hadoop.yarn.conf.TestYarnConfigurationFields

Subsystem	Report/Notes
Docker	ClientAPI=1.54 ServerAPI=1.54 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8489/1/artifact/out/Dockerfile
GITHUB PR	#8489
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets
uname	Linux 2cdc43202514 5.15.0-141-generic #151-Ubuntu SMP Sun May 18 21:35:19 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/bin/hadoop.sh
git revision	trunk / fe44186
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-8489/1/testReport/
Max. process+thread count	617 (vs. ulimit of 10000)
modules	C: hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common U: hadoop-yarn-project/hadoop-yarn
Console output	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8489/1/console
versions	git=2.43.0 maven=3.9.15 spotbugs=4.9.7
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[hadoop-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	18m 25s		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.
+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 _
+0 🆗	mvndep	1m 46s		Maven dependency ordering for branch
+1 💚	mvninstall	50m 2s		trunk passed
+1 💚	compile	6m 41s		trunk passed with JDK Ubuntu-21.0.10+7-Ubuntu-124.04
+1 💚	compile	6m 52s		trunk passed with JDK Ubuntu-17.0.18+8-Ubuntu-124.04.1
+1 💚	checkstyle	2m 37s		trunk passed
+1 💚	mvnsite	2m 22s		trunk passed
+1 💚	javadoc	2m 13s		trunk passed with JDK Ubuntu-21.0.10+7-Ubuntu-124.04
+1 💚	javadoc	2m 3s		trunk passed with JDK Ubuntu-17.0.18+8-Ubuntu-124.04.1
+1 💚	spotbugs	5m 10s		trunk passed
+1 💚	shadedclient	35m 6s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
+0 🆗	mvndep	0m 30s		Maven dependency ordering for patch
+1 💚	mvninstall	1m 25s		the patch passed
+1 💚	compile	6m 13s		the patch passed with JDK Ubuntu-21.0.10+7-Ubuntu-124.04
+1 💚	javac	6m 13s		the patch passed
+1 💚	compile	6m 42s		the patch passed with JDK Ubuntu-17.0.18+8-Ubuntu-124.04.1
+1 💚	javac	6m 42s		the patch passed
+1 💚	blanks	0m 0s		The patch has no blanks issues.
-0 ⚠️	checkstyle	2m 27s	/results-checkstyle-hadoop-yarn-project_hadoop-yarn.txt	hadoop-yarn-project/hadoop-yarn: The patch generated 3 new + 171 unchanged - 0 fixed = 174 total (was 171)
+1 💚	mvnsite	2m 9s		the patch passed
+1 💚	javadoc	2m 1s		the patch passed with JDK Ubuntu-21.0.10+7-Ubuntu-124.04
+1 💚	javadoc	2m 0s		the patch passed with JDK Ubuntu-17.0.18+8-Ubuntu-124.04.1
+1 💚	spotbugs	5m 24s		the patch passed
+1 💚	shadedclient	36m 4s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
-1 ❌	unit	1m 19s	/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-api.txt	hadoop-yarn-api in the patch passed.
-1 ❌	unit	5m 47s	/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-common.txt	hadoop-yarn-common in the patch passed.
+1 💚	asflicense	1m 8s		The patch does not generate ASF License warnings.
		210m 19s

Reason	Tests
Failed junit tests	hadoop.yarn.conf.TestYarnConfigurationFields
	hadoop.yarn.nodelabels.TestFileSystemNodeLabelsStore

Subsystem	Report/Notes
Docker	ClientAPI=1.54 ServerAPI=1.54 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8489/2/artifact/out/Dockerfile
GITHUB PR	#8489
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets
uname	Linux 44e959a4395b 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 / 000afb7
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-8489/2/testReport/
Max. process+thread count	574 (vs. ulimit of 10000)
modules	C: hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common U: hadoop-yarn-project/hadoop-yarn
Console output	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8489/2/console
versions	git=2.43.0 maven=3.9.15 spotbugs=4.9.7
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