HBASE-29766 Support external client connection to kubernetized HBase cluster

[meszibalu]

Added ExternalMappingCoprocessor which:

• acts as ClientMeta, Master, Region co-proccessor.
• accepts a mapping file in hbase.kubernetes.external.mapping configuration property.
• this configuration file is watched and reloaded immediately upon a change.
• replaces internal addresses to the external addresses using the mapping file in the following RPCs:
  • ClientMeta requests like master nodes, meta region server location, bootstrap nodes,
  • hbase:meta table gets/scans for info:sn, info:server columns,
  • getClusterMetrics (status command).

[Apache-HBase]

💔 -1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	0m 38s		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 💚	hbaseanti	0m 0s		Patch does not have any anti-patterns.
			_ master Compile Tests _
+0 🆗	mvndep	0m 12s		Maven dependency ordering for branch
+1 💚	mvninstall	2m 37s		master passed
+1 💚	compile	3m 22s		master passed
+1 💚	checkstyle	1m 3s		master passed
+1 💚	spotbugs	1m 55s		master passed
+1 💚	spotless	0m 43s		branch has no errors when running spotless:check.
			_ Patch Compile Tests _
+0 🆗	mvndep	0m 11s		Maven dependency ordering for patch
+1 💚	mvninstall	2m 22s		the patch passed
+1 💚	compile	3m 15s		the patch passed
+1 💚	javac	3m 15s		the patch passed
+1 💚	blanks	0m 0s		The patch has no blanks issues.
+1 💚	checkstyle	1m 1s		the patch passed
-1 ❌	spotbugs	1m 25s	/new-spotbugs-hbase-server.html	hbase-server generated 1 new + 0 unchanged - 0 fixed = 1 total (was 0)
+1 💚	hadoopcheck	9m 3s		Patch does not cause any errors with Hadoop 3.3.6 3.4.1.
+1 💚	spotless	0m 36s		patch has no errors when running spotless:check.
			_ Other Tests _
+1 💚	asflicense	0m 16s		The patch does not generate ASF License warnings.
		35m 8s

Reason	Tests
SpotBugs	module:hbase-server
	Possible null pointer dereference in org.apache.hadoop.hbase.kubernetes.ExternalMapping.processEvents() due to return value of called method Dereferenced at ExternalMapping.java:org.apache.hadoop.hbase.kubernetes.ExternalMapping.processEvents() due to return value of called method Dereferenced at ExternalMapping.java:[line 106]

Subsystem	Report/Notes
Docker	ClientAPI=1.53 ServerAPI=1.53 base: https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-7703/3/artifact/yetus-general-check/output/Dockerfile
GITHUB PR	#7703
Optional Tests	dupname asflicense javac spotbugs checkstyle codespell detsecrets compile hadoopcheck hbaseanti spotless
uname	Linux a99a76cd7e10 6.14.0-1018-aws #18~24.04.1-Ubuntu SMP Mon Nov 24 19:46:27 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/hbase-personality.sh
git revision	master / 7a9d024
Default Java	Eclipse Adoptium-17.0.11+9
Max. process+thread count	87 (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-7703/3/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 30s		Docker mode activated.
-0 ⚠️	yetus	0m 4s		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 13s		Maven dependency ordering for branch
+1 💚	mvninstall	3m 15s		master passed
+1 💚	compile	1m 19s		master passed
+1 💚	javadoc	0m 48s		master passed
+1 💚	shadedjars	5m 47s		branch has no errors when building our shaded downstream artifacts.
			_ Patch Compile Tests _
+0 🆗	mvndep	0m 14s		Maven dependency ordering for patch
+1 💚	mvninstall	2m 57s		the patch passed
+1 💚	compile	1m 20s		the patch passed
+1 💚	javac	1m 20s		the patch passed
+1 💚	javadoc	0m 45s		the patch passed
+1 💚	shadedjars	5m 40s		patch has no errors when building our shaded downstream artifacts.
			_ Other Tests _
+1 💚	unit	1m 28s		hbase-client in the patch passed.
+1 💚	unit	229m 1s		hbase-server in the patch passed.
		258m 49s

Subsystem	Report/Notes
Docker	ClientAPI=1.43 ServerAPI=1.43 base: https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-7703/3/artifact/yetus-jdk17-hadoop3-check/output/Dockerfile
GITHUB PR	#7703
Optional Tests	javac javadoc unit compile shadedjars
uname	Linux 9a228825628d 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 / 7a9d024
Default Java	Eclipse Adoptium-17.0.11+9
Test Results	https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-7703/3/testReport/
Max. process+thread count	4697 (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-7703/3/console
versions	git=2.34.1 maven=3.9.8
Powered by	Apache Yetus 0.15.0 https://yetus.apache.org

This message was automatically generated.