HDFS-16913. Fix flaky some unit tests since they offen timeout

[GuoPhilipse]

Description of PR

fix timeout in below unit tests
TestFileLengthOnClusterRestart TestLeaseRecovery2 TestBalancerService TestPipelinesFailover TestSnapshot

How was this patch tested?

TestSnapshot

TestPipelinesFailover

TestBalancerService

TestLeaseRecovery2

TestFileLengthOnClusterRestart

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?

[snmvaughan]

You might be interested in #4835

[hadoop-yetus]

🎊 +1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	1m 15s		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 appears to include 5 new or modified test files.
			_ trunk Compile Tests _
+1 💚	mvninstall	50m 3s		trunk passed
+1 💚	compile	1m 42s		trunk passed with JDK Ubuntu-11.0.17+8-post-Ubuntu-1ubuntu220.04
+1 💚	compile	1m 28s		trunk passed with JDK Private Build-1.8.0_352-8u352-ga-1~20.04-b08
+1 💚	checkstyle	1m 7s		trunk passed
+1 💚	mvnsite	1m 33s		trunk passed
+1 💚	javadoc	1m 9s		trunk passed with JDK Ubuntu-11.0.17+8-post-Ubuntu-1ubuntu220.04
+1 💚	javadoc	1m 40s		trunk passed with JDK Private Build-1.8.0_352-8u352-ga-1~20.04-b08
+1 💚	spotbugs	3m 46s		trunk passed
+1 💚	shadedclient	31m 55s		branch has no errors when building and testing our client artifacts.
-0 ⚠️	patch	32m 14s		Used diff version of patch file. Binary files and potentially other changes not applied. Please rebase and squash commits if necessary.
			_ Patch Compile Tests _
+1 💚	mvninstall	1m 33s		the patch passed
+1 💚	compile	1m 29s		the patch passed with JDK Ubuntu-11.0.17+8-post-Ubuntu-1ubuntu220.04
+1 💚	javac	1m 29s		the patch passed
+1 💚	compile	1m 23s		the patch passed with JDK Private Build-1.8.0_352-8u352-ga-1~20.04-b08
+1 💚	javac	1m 23s		the patch passed
+1 💚	blanks	0m 0s		The patch has no blanks issues.
+1 💚	checkstyle	0m 54s		the patch passed
+1 💚	mvnsite	1m 27s		the patch passed
+1 💚	javadoc	0m 58s		the patch passed with JDK Ubuntu-11.0.17+8-post-Ubuntu-1ubuntu220.04
+1 💚	javadoc	1m 37s		the patch passed with JDK Private Build-1.8.0_352-8u352-ga-1~20.04-b08
+1 💚	spotbugs	3m 54s		the patch passed
+1 💚	shadedclient	30m 20s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
+1 💚	unit	278m 42s		hadoop-hdfs in the patch passed.
+1 💚	asflicense	0m 43s		The patch does not generate ASF License warnings.
		415m 57s

Subsystem	Report/Notes
Docker	ClientAPI=1.42 ServerAPI=1.42 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-5377/1/artifact/out/Dockerfile
GITHUB PR	#5377
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets
uname	Linux 09883605ade5 4.15.0-200-generic #211-Ubuntu SMP Thu Nov 24 18:16:04 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/bin/hadoop.sh
git revision	trunk / e72f773
Default Java	Private Build-1.8.0_352-8u352-ga-1~20.04-b08
Multi-JDK versions	/usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.17+8-post-Ubuntu-1ubuntu220.04 /usr/lib/jvm/java-8-openjdk-amd64:Private Build-1.8.0_352-8u352-ga-1~20.04-b08
Test Results	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-5377/1/testReport/
Max. process+thread count	2157 (vs. ulimit of 5500)
modules	C: hadoop-hdfs-project/hadoop-hdfs U: hadoop-hdfs-project/hadoop-hdfs
Console output	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-5377/1/console
versions	git=2.25.1 maven=3.6.3 spotbugs=4.2.2
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[slfan1989]

LGTM.

[slfan1989]

Merged. Thanx @GuoPhilipse for the contribution. Thanx @tomscut for helping to review the code.