HBASE-29721 Add validation for Mutations without column families

[Jaehui-Lee]

https://issues.apache.org/jira/browse/HBASE-29721

[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	0m 30s		Docker mode activated.
			_ Prechecks _
+1 💚	dupname	0m 1s		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 💚	hbaseanti	0m 0s		Patch does not have any anti-patterns.
			_ master Compile Tests _
+0 🆗	mvndep	0m 18s		Maven dependency ordering for branch
+1 💚	mvninstall	3m 36s		master passed
+1 💚	compile	4m 26s		master passed
+1 💚	checkstyle	1m 20s		master passed
+1 💚	spotbugs	2m 25s		master passed
+1 💚	spotless	0m 53s		branch has no errors when running spotless:check.
			_ Patch Compile Tests _
+0 🆗	mvndep	0m 12s		Maven dependency ordering for patch
+1 💚	mvninstall	3m 5s		the patch passed
+1 💚	compile	4m 16s		the patch passed
-0 ⚠️	javac	0m 50s	/results-compile-javac-hbase-client.txt	hbase-client generated 2 new + 125 unchanged - 2 fixed = 127 total (was 127)
+1 💚	blanks	0m 0s		The patch has no blanks issues.
-0 ⚠️	checkstyle	0m 17s	/results-checkstyle-hbase-client.txt	hbase-client: The patch generated 1 new + 0 unchanged - 0 fixed = 1 total (was 0)
+1 💚	spotbugs	2m 35s		the patch passed
+1 💚	hadoopcheck	12m 14s		Patch does not cause any errors with Hadoop 3.3.6 3.4.1.
+1 💚	spotless	0m 47s		patch has no errors when running spotless:check.
			_ Other Tests _
+1 💚	asflicense	0m 19s		The patch does not generate ASF License warnings.
		46m 14s

Subsystem	Report/Notes
Docker	ClientAPI=1.43 ServerAPI=1.43 base: https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-7469/3/artifact/yetus-general-check/output/Dockerfile
GITHUB PR	#7469
Optional Tests	dupname asflicense javac spotbugs checkstyle codespell detsecrets compile hadoopcheck hbaseanti spotless
uname	Linux abf2bf850d06 5.4.0-1103-aws #111~18.04.1-Ubuntu SMP Tue May 23 20:04:10 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/hbase-personality.sh
git revision	master / e44795b
Default Java	Eclipse Adoptium-17.0.11+9
Max. process+thread count	85 (vs. ulimit of 30000)
modules	C: hbase-client hbase-server U: .
Console output	https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-7469/3/console
versions	git=2.34.1 maven=3.9.8 spotbugs=4.7.3
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[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	0m 29s		Docker mode activated.
-0 ⚠️	yetus	0m 3s		Unprocessed flag(s): --brief-report-file --spotbugs-strict-precheck --author-ignore-list --blanks-eol-ignore-file --blanks-tabs-ignore-file --quick-hadoopcheck
			_ Prechecks _
			_ master Compile Tests _
+0 🆗	mvndep	0m 27s		Maven dependency ordering for branch
+1 💚	mvninstall	3m 19s		master passed
+1 💚	compile	1m 22s		master passed
+1 💚	javadoc	0m 45s		master passed
+1 💚	shadedjars	6m 12s		branch has no errors when building our shaded downstream artifacts.
			_ Patch Compile Tests _
+0 🆗	mvndep	0m 14s		Maven dependency ordering for patch
+1 💚	mvninstall	3m 6s		the patch passed
+1 💚	compile	1m 22s		the patch passed
+1 💚	javac	1m 22s		the patch passed
+1 💚	javadoc	0m 45s		the patch passed
+1 💚	shadedjars	6m 14s		patch has no errors when building our shaded downstream artifacts.
			_ Other Tests _
+1 💚	unit	1m 32s		hbase-client in the patch passed.
+1 💚	unit	213m 1s		hbase-server in the patch passed.
		243m 51s

Subsystem	Report/Notes
Docker	ClientAPI=1.43 ServerAPI=1.43 base: https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-7469/3/artifact/yetus-jdk17-hadoop3-check/output/Dockerfile
GITHUB PR	#7469
Optional Tests	javac javadoc unit compile shadedjars
uname	Linux 15fea9d6fbd1 5.4.0-1103-aws #111~18.04.1-Ubuntu SMP Tue May 23 20:04:10 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/hbase-personality.sh
git revision	master / e44795b
Default Java	Eclipse Adoptium-17.0.11+9
Test Results	https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-7469/3/testReport/
Max. process+thread count	4201 (vs. ulimit of 30000)
modules	C: hbase-client hbase-server U: .
Console output	https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-7469/3/console
versions	git=2.34.1 maven=3.9.8
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[junegunn]

I completely agree that empty mutations are mistakes that we should identify and inform users about (we already do so in single-mutation methods as you mentioned in the Jira).

However, we can't be 100% sure that no users rely on the current behavior of allowing empty mutations. It's a classic spacebar-heating problem. So, while I don't think we should really be concerned about it, I'd like to hear the opinions of PMC members, as it might disrupt existing client applications.

/cc @Apache9