YARN-11132. RM failover may fail when Dispatcher stuck.

[zhengchenyu]

Description of PR

https://issues.apache.org/jira/browse/YARN-11132

How was this patch tested?

unit test

For code changes:

• Add thread to detect dead lock.

[zhengchenyu]

In this PR, I only detect "RM Event dispatcher", dose not detect other dispatcher. Maybe we could do it later.

[hadoop-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	0m 42s		Docker mode activated.
			_ Prechecks _
+1 💚	dupname	0m 0s		No case conflicting files found.
+0 🆗	codespell	0m 0s		codespell 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	16m 31s		Maven dependency ordering for branch
+1 💚	mvninstall	25m 10s		trunk passed
+1 💚	compile	9m 58s		trunk passed with JDK Private Build-11.0.15+10-Ubuntu-0ubuntu0.20.04.1
+1 💚	compile	8m 56s		trunk passed with JDK Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07
+1 💚	checkstyle	2m 20s		trunk passed
+1 💚	mvnsite	4m 48s		trunk passed
+1 💚	javadoc	4m 13s		trunk passed with JDK Private Build-11.0.15+10-Ubuntu-0ubuntu0.20.04.1
+1 💚	javadoc	4m 7s		trunk passed with JDK Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07
+1 💚	spotbugs	7m 55s		trunk passed
+1 💚	shadedclient	23m 20s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
+0 🆗	mvndep	0m 32s		Maven dependency ordering for patch
+1 💚	mvninstall	2m 28s		the patch passed
+1 💚	compile	9m 13s		the patch passed with JDK Private Build-11.0.15+10-Ubuntu-0ubuntu0.20.04.1
+1 💚	javac	9m 13s		the patch passed
+1 💚	compile	8m 47s		the patch passed with JDK Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07
+1 💚	javac	8m 47s		the patch passed
+1 💚	blanks	0m 0s		The patch has no blanks issues.
-0 ⚠️	checkstyle	2m 3s	/results-checkstyle-hadoop-yarn-project_hadoop-yarn.txt	hadoop-yarn-project/hadoop-yarn: The patch generated 4 new + 211 unchanged - 0 fixed = 215 total (was 211)
+1 💚	mvnsite	4m 6s		the patch passed
+1 💚	javadoc	3m 57s		the patch passed with JDK Private Build-11.0.15+10-Ubuntu-0ubuntu0.20.04.1
+1 💚	javadoc	3m 47s		the patch passed with JDK Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07
+1 💚	spotbugs	7m 34s		the patch passed
+1 💚	shadedclient	23m 13s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
-1 ❌	unit	1m 41s	/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-api.txt	hadoop-yarn-api in the patch passed.
+1 💚	unit	5m 31s		hadoop-yarn-common in the patch passed.
-1 ❌	unit	96m 57s	/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager.txt	hadoop-yarn-server-resourcemanager in the patch passed.
+1 💚	asflicense	1m 26s		The patch does not generate ASF License warnings.
		281m 28s

Reason	Tests
Failed junit tests	hadoop.yarn.conf.TestYarnConfigurationFields
	hadoop.yarn.server.resourcemanager.webapp.TestRMWebServicesDelegationTokenAuthentication
	hadoop.yarn.server.resourcemanager.TestRMHA
	hadoop.yarn.server.resourcemanager.metrics.TestSystemMetricsPublisher
	hadoop.yarn.server.resourcemanager.metrics.TestCombinedSystemMetricsPublisher
	hadoop.yarn.webapp.TestRMWithXFSFilter
	hadoop.yarn.server.resourcemanager.webapp.TestRMWebappAuthentication
	hadoop.yarn.server.resourcemanager.TestClientRMService

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4278/1/artifact/out/Dockerfile
GITHUB PR	#4278
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell
uname	Linux 2d37ad8b704b 4.15.0-112-generic #113-Ubuntu SMP Thu Jul 9 23:41:39 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/bin/hadoop.sh
git revision	trunk / 2be4002
Default Java	Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07
Multi-JDK versions	/usr/lib/jvm/java-11-openjdk-amd64:Private Build-11.0.15+10-Ubuntu-0ubuntu0.20.04.1 /usr/lib/jvm/java-8-openjdk-amd64:Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07
Test Results	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4278/1/testReport/
Max. process+thread count	950 (vs. ulimit of 5500)
modules	C: hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager U: hadoop-yarn-project/hadoop-yarn
Console output	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4278/1/console
versions	git=2.25.1 maven=3.6.3 spotbugs=4.2.2
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[github-actions]

We're closing this stale PR because it has been open for 100 days with no activity. This isn't a judgement on the merit of the PR in any way. It's just a way of keeping the PR queue manageable.
If you feel like this was a mistake, or you would like to continue working on it, please feel free to re-open it and ask for a committer to remove the stale tag and review again.
Thanks all for your contribution.