HDFS-17536. RBF: Format safe-mode related logic and fix a race

[ZanderXu]

Both RouterAdminServer#enterSafeMode() and RouterSafemodeService#periodicInvoke()#leave can change the router state at the same time.

Safe-mode change logic should be condensed into one method. And some races may happen in the current implementation, such as:

1. RouterAdminServer#enterSafeMode() set router stat to RouterServiceState.SAFEMODE
2. RouterSafemodeService#periodicInvoke()#leave got true when checking safeMode && !isSafeModeSetManually
3. RouterAdminServer#enterSafeMode() set safeMode and isSafeModeSetManually to true
4. RouterAdminServer#enterSafeMode() get true when checking safe-mode
5. RouterSafemodeService#periodicInvoke()#leave call leave() to leave safe-mode.

This RBF is not in safe-mode and safeMode is false, but isSafeModeSetManually is true.

[hadoop-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	0m 29s		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.
			_ trunk Compile Tests _
-1 ❌	mvninstall	22m 1s	/branch-mvninstall-root.txt	root in trunk failed.
+1 💚	compile	0m 40s		trunk passed with JDK Ubuntu-11.0.22+7-post-Ubuntu-0ubuntu220.04.1
+1 💚	compile	0m 37s		trunk passed with JDK Private Build-1.8.0_402-8u402-ga-2ubuntu1~20.04-b06
+1 💚	checkstyle	0m 30s		trunk passed
+1 💚	mvnsite	0m 42s		trunk passed
+1 💚	javadoc	0m 44s		trunk passed with JDK Ubuntu-11.0.22+7-post-Ubuntu-0ubuntu220.04.1
+1 💚	javadoc	0m 30s		trunk passed with JDK Private Build-1.8.0_402-8u402-ga-2ubuntu1~20.04-b06
+1 💚	spotbugs	1m 20s		trunk passed
+1 💚	shadedclient	33m 31s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
+1 💚	mvninstall	0m 31s		the patch passed
+1 💚	compile	0m 31s		the patch passed with JDK Ubuntu-11.0.22+7-post-Ubuntu-0ubuntu220.04.1
+1 💚	javac	0m 31s		the patch passed
+1 💚	compile	0m 29s		the patch passed with JDK Private Build-1.8.0_402-8u402-ga-2ubuntu1~20.04-b06
+1 💚	javac	0m 29s		the patch passed
+1 💚	blanks	0m 0s		The patch has no blanks issues.
-0 ⚠️	checkstyle	0m 17s	/results-checkstyle-hadoop-hdfs-project_hadoop-hdfs-rbf.txt	hadoop-hdfs-project/hadoop-hdfs-rbf: The patch generated 1 new + 2 unchanged - 0 fixed = 3 total (was 2)
+1 💚	mvnsite	0m 32s		the patch passed
+1 💚	javadoc	0m 28s		the patch passed with JDK Ubuntu-11.0.22+7-post-Ubuntu-0ubuntu220.04.1
+1 💚	javadoc	0m 23s		the patch passed with JDK Private Build-1.8.0_402-8u402-ga-2ubuntu1~20.04-b06
-1 ❌	spotbugs	1m 24s	/new-spotbugs-hadoop-hdfs-project_hadoop-hdfs-rbf.html	hadoop-hdfs-project/hadoop-hdfs-rbf generated 1 new + 0 unchanged - 0 fixed = 1 total (was 0)
+1 💚	shadedclient	33m 47s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
+1 💚	unit	30m 46s		hadoop-hdfs-rbf in the patch passed.
+1 💚	asflicense	0m 37s		The patch does not generate ASF License warnings.
		136m 9s

Reason	Tests
SpotBugs	module:hadoop-hdfs-project/hadoop-hdfs-rbf
	Inconsistent synchronization of org.apache.hadoop.hdfs.server.federation.router.RouterSafemodeService.startupTime; locked 50% of time Unsynchronized access at RouterSafemodeService.java:50% of time Unsynchronized access at RouterSafemodeService.java:[line 146]

Subsystem	Report/Notes
Docker	ClientAPI=1.44 ServerAPI=1.44 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6844/1/artifact/out/Dockerfile
GITHUB PR	#6844
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets
uname	Linux 865f78595ad0 5.15.0-94-generic #104-Ubuntu SMP Tue Jan 9 15:25:40 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/bin/hadoop.sh
git revision	trunk / 2694e62
Default Java	Private Build-1.8.0_402-8u402-ga-2ubuntu1~20.04-b06
Multi-JDK versions	/usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.22+7-post-Ubuntu-0ubuntu220.04.1 /usr/lib/jvm/java-8-openjdk-amd64:Private Build-1.8.0_402-8u402-ga-2ubuntu1~20.04-b06
Test Results	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6844/1/testReport/
Max. process+thread count	3456 (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-6844/1/console
versions	git=2.25.1 maven=3.6.3 spotbugs=4.2.2
Powered by	Apache Yetus 0.14.0 https://yetus.apache.org

This message was automatically generated.

[goiri]

Wouldn't make more sense to use leave()?
It would be good to have unified enter and leave, and just have a call to each.

[Hexiaoqiao]

Hi @ZanderXu Please check checkstyle and spotbugs report by Yetus before check it in.

[hadoop-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	0m 28s		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.
			_ trunk Compile Tests _
+1 💚	mvninstall	43m 57s		trunk passed
+1 💚	compile	0m 40s		trunk passed with JDK Ubuntu-11.0.23+9-post-Ubuntu-1ubuntu120.04.2
+1 💚	compile	0m 37s		trunk passed with JDK Private Build-1.8.0_412-8u412-ga-1~20.04.1-b08
+1 💚	checkstyle	0m 31s		trunk passed
+1 💚	mvnsite	0m 41s		trunk passed
+1 💚	javadoc	0m 41s		trunk passed with JDK Ubuntu-11.0.23+9-post-Ubuntu-1ubuntu120.04.2
+1 💚	javadoc	0m 32s		trunk passed with JDK Private Build-1.8.0_412-8u412-ga-1~20.04.1-b08
+1 💚	spotbugs	1m 21s		trunk passed
+1 💚	shadedclient	33m 44s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
+1 💚	mvninstall	0m 31s		the patch passed
+1 💚	compile	0m 32s		the patch passed with JDK Ubuntu-11.0.23+9-post-Ubuntu-1ubuntu120.04.2
+1 💚	javac	0m 32s		the patch passed
+1 💚	compile	0m 30s		the patch passed with JDK Private Build-1.8.0_412-8u412-ga-1~20.04.1-b08
+1 💚	javac	0m 30s		the patch passed
+1 💚	blanks	0m 0s		The patch has no blanks issues.
+1 💚	checkstyle	0m 19s		the patch passed
+1 💚	mvnsite	0m 31s		the patch passed
+1 💚	javadoc	0m 28s		the patch passed with JDK Ubuntu-11.0.23+9-post-Ubuntu-1ubuntu120.04.2
+1 💚	javadoc	0m 23s		the patch passed with JDK Private Build-1.8.0_412-8u412-ga-1~20.04.1-b08
+1 💚	spotbugs	1m 21s		the patch passed
+1 💚	shadedclient	33m 28s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
+1 💚	unit	30m 22s		hadoop-hdfs-rbf in the patch passed.
+1 💚	asflicense	0m 37s		The patch does not generate ASF License warnings.
		153m 48s

Subsystem	Report/Notes
Docker	ClientAPI=1.44 ServerAPI=1.44 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6844/2/artifact/out/Dockerfile
GITHUB PR	#6844
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets
uname	Linux e6e148ef05fd 5.15.0-94-generic #104-Ubuntu SMP Tue Jan 9 15:25:40 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/bin/hadoop.sh
git revision	trunk / 2137138
Default Java	Private Build-1.8.0_412-8u412-ga-1~20.04.1-b08
Multi-JDK versions	/usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.23+9-post-Ubuntu-1ubuntu120.04.2 /usr/lib/jvm/java-8-openjdk-amd64:Private Build-1.8.0_412-8u412-ga-1~20.04.1-b08
Test Results	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6844/2/testReport/
Max. process+thread count	3380 (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-6844/2/console
versions	git=2.25.1 maven=3.6.3 spotbugs=4.2.2
Powered by	Apache Yetus 0.14.0 https://yetus.apache.org

This message was automatically generated.

[hadoop-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	11m 35s		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.
			_ trunk Compile Tests _
+1 💚	mvninstall	33m 47s		trunk passed
+1 💚	compile	0m 40s		trunk passed with JDK Ubuntu-11.0.25+9-post-Ubuntu-1ubuntu120.04
+1 💚	compile	0m 38s		trunk passed with JDK Private Build-1.8.0_432-8u432-gaus1-0ubuntu220.04-ga
+1 💚	checkstyle	0m 32s		trunk passed
+1 💚	mvnsite	0m 44s		trunk passed
+1 💚	javadoc	0m 42s		trunk passed with JDK Ubuntu-11.0.25+9-post-Ubuntu-1ubuntu120.04
+1 💚	javadoc	0m 33s		trunk passed with JDK Private Build-1.8.0_432-8u432-gaus1-0ubuntu220.04-ga
+1 💚	spotbugs	1m 21s		trunk passed
+1 💚	shadedclient	33m 27s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
+1 💚	mvninstall	0m 30s		the patch passed
+1 💚	compile	0m 31s		the patch passed with JDK Ubuntu-11.0.25+9-post-Ubuntu-1ubuntu120.04
+1 💚	javac	0m 31s		the patch passed
+1 💚	compile	0m 28s		the patch passed with JDK Private Build-1.8.0_432-8u432-gaus1-0ubuntu220.04-ga
+1 💚	javac	0m 28s		the patch passed
+1 💚	blanks	0m 1s		The patch has no blanks issues.
+1 💚	checkstyle	0m 20s		the patch passed
+1 💚	mvnsite	0m 31s		the patch passed
+1 💚	javadoc	0m 29s		the patch passed with JDK Ubuntu-11.0.25+9-post-Ubuntu-1ubuntu120.04
+1 💚	javadoc	0m 24s		the patch passed with JDK Private Build-1.8.0_432-8u432-gaus1-0ubuntu220.04-ga
+1 💚	spotbugs	1m 20s		the patch passed
+1 💚	shadedclient	32m 34s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
+1 💚	unit	29m 56s		hadoop-hdfs-rbf in the patch passed.
+1 💚	asflicense	0m 38s		The patch does not generate ASF License warnings.
		153m 37s

Subsystem	Report/Notes
Docker	ClientAPI=1.47 ServerAPI=1.47 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6844/3/artifact/out/Dockerfile
GITHUB PR	#6844
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets
uname	Linux 62c5353b7d2e 5.15.0-125-generic #135-Ubuntu SMP Fri Sep 27 13:53:58 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/bin/hadoop.sh
git revision	trunk / ebce14d
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-6844/3/testReport/
Max. process+thread count	3187 (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-6844/3/console
versions	git=2.25.1 maven=3.6.3 spotbugs=4.2.2
Powered by	Apache Yetus 0.14.0 https://yetus.apache.org

This message was automatically generated.

[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.