HBASE-27235 Clean up error-prone warnings in hbase-hadoop-compat

[apurtell]

No description provided.

[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	0m 42s	Docker mode activated.
-0 ⚠️	yetus	0m 3s	Unprocessed flag(s): --brief-report-file --spotbugs-strict-precheck --whitespace-eol-ignore-list --whitespace-tabs-ignore-list --quick-hadoopcheck
		_ Prechecks _
		_ master Compile Tests _
+1 💚	mvninstall	2m 29s	master passed
+1 💚	compile	0m 11s	master passed
+1 💚	shadedjars	4m 0s	branch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	0m 11s	master passed
		_ Patch Compile Tests _
+1 💚	mvninstall	2m 8s	the patch passed
+1 💚	compile	0m 12s	the patch passed
+1 💚	javac	0m 12s	the patch passed
+1 💚	shadedjars	4m 0s	patch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	0m 10s	the patch passed
		_ Other Tests _
+1 💚	unit	0m 30s	hbase-hadoop-compat in the patch passed.
		15m 34s

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-4648/1/artifact/yetus-jdk8-hadoop3-check/output/Dockerfile
GITHUB PR	#4648
Optional Tests	javac javadoc unit shadedjars compile
uname	Linux 9673792f0c1f 5.4.0-1071-aws #76~18.04.1-Ubuntu SMP Mon Mar 28 17:49:57 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/hbase-personality.sh
git revision	master / b1706a8
Default Java	AdoptOpenJDK-1.8.0_282-b08
Test Results	https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-4648/1/testReport/
Max. process+thread count	254 (vs. ulimit of 30000)
modules	C: hbase-hadoop-compat U: hbase-hadoop-compat
Console output	https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-4648/1/console
versions	git=2.17.1 maven=3.6.3
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[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	3m 1s	Docker mode activated.
-0 ⚠️	yetus	0m 2s	Unprocessed flag(s): --brief-report-file --spotbugs-strict-precheck --whitespace-eol-ignore-list --whitespace-tabs-ignore-list --quick-hadoopcheck
		_ Prechecks _
		_ master Compile Tests _
+1 💚	mvninstall	3m 1s	master passed
+1 💚	compile	0m 14s	master passed
+1 💚	shadedjars	3m 48s	branch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	0m 15s	master passed
		_ Patch Compile Tests _
+1 💚	mvninstall	2m 33s	the patch passed
+1 💚	compile	0m 14s	the patch passed
+1 💚	javac	0m 14s	the patch passed
+1 💚	shadedjars	3m 46s	patch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	0m 14s	the patch passed
		_ Other Tests _
+1 💚	unit	0m 37s	hbase-hadoop-compat in the patch passed.
		18m 47s

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-4648/1/artifact/yetus-jdk11-hadoop3-check/output/Dockerfile
GITHUB PR	#4648
Optional Tests	javac javadoc unit shadedjars compile
uname	Linux 5a00346d8f45 5.4.0-90-generic #101-Ubuntu SMP Fri Oct 15 20:00:55 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/hbase-personality.sh
git revision	master / b1706a8
Default Java	AdoptOpenJDK-11.0.10+9
Test Results	https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-4648/1/testReport/
Max. process+thread count	274 (vs. ulimit of 30000)
modules	C: hbase-hadoop-compat U: hbase-hadoop-compat
Console output	https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-4648/1/console
versions	git=2.17.1 maven=3.6.3
Powered by	Apache Yetus 0.12.0 https://yetus.apache.org

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[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	1m 58s	Docker mode activated.
		_ Prechecks _
+1 💚	dupname	0m 0s	No case conflicting files found.
+1 💚	hbaseanti	0m 0s	Patch does not have any anti-patterns.
+1 💚	@author	0m 0s	The patch does not contain any @author tags.
		_ master Compile Tests _
+1 💚	mvninstall	3m 27s	master passed
+1 💚	compile	0m 23s	master passed
+1 💚	checkstyle	0m 14s	master passed
+1 💚	spotless	0m 56s	branch has no errors when running spotless:check.
+1 💚	spotbugs	0m 27s	master passed
		_ Patch Compile Tests _
+1 💚	mvninstall	2m 39s	the patch passed
+1 💚	compile	0m 19s	the patch passed
+1 💚	javac	0m 19s	hbase-hadoop-compat generated 0 new + 2 unchanged - 51 fixed = 2 total (was 53)
+1 💚	checkstyle	0m 7s	the patch passed
+1 💚	whitespace	0m 0s	The patch has no whitespace issues.
+1 💚	hadoopcheck	14m 6s	Patch does not cause any errors with Hadoop 3.1.2 3.2.2 3.3.1.
+1 💚	spotless	0m 44s	patch has no errors when running spotless:check.
+1 💚	spotbugs	0m 27s	the patch passed
		_ Other Tests _
+1 💚	asflicense	0m 10s	The patch does not generate ASF License warnings.
		31m 16s

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-4648/1/artifact/yetus-general-check/output/Dockerfile
GITHUB PR	#4648
Optional Tests	dupname asflicense javac spotbugs hadoopcheck hbaseanti spotless checkstyle compile
uname	Linux 3e2592dbccc1 5.4.0-90-generic #101-Ubuntu SMP Fri Oct 15 20:00:55 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/hbase-personality.sh
git revision	master / b1706a8
Default Java	AdoptOpenJDK-1.8.0_282-b08
Max. process+thread count	64 (vs. ulimit of 30000)
modules	C: hbase-hadoop-compat U: hbase-hadoop-compat
Console output	https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-4648/1/console
versions	git=2.17.1 maven=3.6.3 spotbugs=4.2.2
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[Apache9]

Not a good design but anyway, it works. Not your fault, let's file another issue to rewrite this...