HBASE-26369 Fix checkstyle issues for KeyValue and ByteBufferUtils

[NishthaShah]

This change fixes the checkstyle issues for KeyValue.java and ByteBufferUtils.java

[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	1m 13s	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	4m 50s	master passed
+1 💚	compile	0m 27s	master passed
+1 💚	shadedjars	9m 32s	branch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	0m 25s	master passed
		_ Patch Compile Tests _
+1 💚	mvninstall	4m 20s	the patch passed
+1 💚	compile	0m 24s	the patch passed
+1 💚	javac	0m 24s	the patch passed
+1 💚	shadedjars	9m 7s	patch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	0m 23s	the patch passed
		_ Other Tests _
+1 💚	unit	2m 23s	hbase-common in the patch passed.
		34m 22s

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/HBase/job/HBase-PreCommit-GitHub-PR/job/PR-3765/1/artifact/yetus-jdk8-hadoop3-check/output/Dockerfile
GITHUB PR	#3765
Optional Tests	javac javadoc unit shadedjars compile
uname	Linux f2d553e75b8c 4.15.0-147-generic #151-Ubuntu SMP Fri Jun 18 19:21:19 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/hbase-personality.sh
git revision	master / 26ab9d0
Default Java	AdoptOpenJDK-1.8.0_282-b08
Test Results	https://ci-hadoop.apache.org/job/HBase/job/HBase-PreCommit-GitHub-PR/job/PR-3765/1/testReport/
Max. process+thread count	220 (vs. ulimit of 30000)
modules	C: hbase-common U: hbase-common
Console output	https://ci-hadoop.apache.org/job/HBase/job/HBase-PreCommit-GitHub-PR/job/PR-3765/1/console
versions	git=2.17.1 maven=3.6.3
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[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	0m 25s	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	4m 12s	master passed
+1 💚	compile	0m 51s	master passed
+1 💚	checkstyle	0m 30s	master passed
+1 💚	spotbugs	0m 50s	master passed
		_ Patch Compile Tests _
+1 💚	mvninstall	3m 47s	the patch passed
+1 💚	compile	0m 49s	the patch passed
+1 💚	javac	0m 49s	the patch passed
+1 💚	checkstyle	0m 24s	hbase-common: The patch generated 0 new + 0 unchanged - 160 fixed = 0 total (was 160)
+1 💚	whitespace	0m 0s	The patch has no whitespace issues.
+1 💚	hadoopcheck	19m 24s	Patch does not cause any errors with Hadoop 3.1.2 3.2.1 3.3.0.
+1 💚	spotbugs	0m 55s	the patch passed
		_ Other Tests _
+1 💚	asflicense	0m 16s	The patch does not generate ASF License warnings.
		40m 31s

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/HBase/job/HBase-PreCommit-GitHub-PR/job/PR-3765/1/artifact/yetus-general-check/output/Dockerfile
GITHUB PR	#3765
Optional Tests	dupname asflicense javac spotbugs hadoopcheck hbaseanti checkstyle compile
uname	Linux 8df0ac54da8c 4.15.0-58-generic #64-Ubuntu SMP Tue Aug 6 11:12:41 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/hbase-personality.sh
git revision	master / 26ab9d0
Default Java	AdoptOpenJDK-1.8.0_282-b08
Max. process+thread count	95 (vs. ulimit of 30000)
modules	C: hbase-common U: hbase-common
Console output	https://ci-hadoop.apache.org/job/HBase/job/HBase-PreCommit-GitHub-PR/job/PR-3765/1/console
versions	git=2.17.1 maven=3.6.3 spotbugs=4.2.2
Powered by	Apache Yetus 0.12.0 https://yetus.apache.org

This message was automatically generated.

[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	0m 28s	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	4m 50s	master passed
+1 💚	compile	0m 30s	master passed
+1 💚	shadedjars	11m 39s	branch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	0m 33s	master passed
		_ Patch Compile Tests _
+1 💚	mvninstall	6m 28s	the patch passed
+1 💚	compile	0m 32s	the patch passed
+1 💚	javac	0m 32s	the patch passed
+1 💚	shadedjars	11m 38s	patch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	0m 31s	the patch passed
		_ Other Tests _
+1 💚	unit	2m 31s	hbase-common in the patch passed.
		40m 52s

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/HBase/job/HBase-PreCommit-GitHub-PR/job/PR-3765/1/artifact/yetus-jdk11-hadoop3-check/output/Dockerfile
GITHUB PR	#3765
Optional Tests	javac javadoc unit shadedjars compile
uname	Linux b4d501305d5c 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/hbase-personality.sh
git revision	master / 26ab9d0
Default Java	AdoptOpenJDK-11.0.10+9
Test Results	https://ci-hadoop.apache.org/job/HBase/job/HBase-PreCommit-GitHub-PR/job/PR-3765/1/testReport/
Max. process+thread count	270 (vs. ulimit of 30000)
modules	C: hbase-common U: hbase-common
Console output	https://ci-hadoop.apache.org/job/HBase/job/HBase-PreCommit-GitHub-PR/job/PR-3765/1/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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[virajjasani]

+1, thanks @NishthaShah. Can you also create a backport PR against branch-2?

[NishthaShah]

+1, thanks @NishthaShah. Can you also create a backport PR against branch-2?

Thanks @virajjasani for reviewing, raised #3785 against branch-2.