HBASE-26790 getAllRegionLocations can cache locations with null hostname

[bbeaudreault]

No description provided.

[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	0m 36s	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 _
+0 🆗	mvndep	0m 14s	Maven dependency ordering for branch
+1 💚	mvninstall	2m 17s	master passed
+1 💚	compile	2m 48s	master passed
+1 💚	checkstyle	0m 40s	master passed
+1 💚	spotless	0m 42s	branch has no errors when running spotless:check.
+1 💚	spotbugs	1m 54s	master passed
		_ Patch Compile Tests _
+0 🆗	mvndep	0m 10s	Maven dependency ordering for patch
+1 💚	mvninstall	2m 5s	the patch passed
+1 💚	compile	2m 47s	the patch passed
+1 💚	javac	2m 47s	the patch passed
+1 💚	checkstyle	0m 39s	the patch passed
+1 💚	whitespace	0m 0s	The patch has no whitespace issues.
+1 💚	hadoopcheck	11m 42s	Patch does not cause any errors with Hadoop 3.1.2 3.2.2 3.3.1.
+1 💚	spotless	0m 39s	patch has no errors when running spotless:check.
+1 💚	spotbugs	1m 59s	the patch passed
		_ Other Tests _
+1 💚	asflicense	0m 14s	The patch does not generate ASF License warnings.
		34m 49s

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-4565/1/artifact/yetus-general-check/output/Dockerfile
GITHUB PR	#4565
Optional Tests	dupname asflicense javac spotbugs hadoopcheck hbaseanti spotless checkstyle compile
uname	Linux 903223b9684c 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 / 9bae50f
Default Java	AdoptOpenJDK-1.8.0_282-b08
Max. process+thread count	69 (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-4565/1/console
versions	git=2.17.1 maven=3.6.3 spotbugs=4.2.2
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[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	1m 37s	Docker mode activated.
-0 ⚠️	yetus	0m 4s	Unprocessed flag(s): --brief-report-file --spotbugs-strict-precheck --whitespace-eol-ignore-list --whitespace-tabs-ignore-list --quick-hadoopcheck
		_ Prechecks _
		_ master Compile Tests _
+0 🆗	mvndep	0m 14s	Maven dependency ordering for branch
+1 💚	mvninstall	4m 7s	master passed
+1 💚	compile	1m 2s	master passed
+1 💚	shadedjars	4m 23s	branch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	0m 45s	master passed
		_ Patch Compile Tests _
+0 🆗	mvndep	0m 10s	Maven dependency ordering for patch
+1 💚	mvninstall	2m 29s	the patch passed
+1 💚	compile	0m 55s	the patch passed
+1 💚	javac	0m 55s	the patch passed
+1 💚	shadedjars	4m 18s	patch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	0m 43s	the patch passed
		_ Other Tests _
+1 💚	unit	1m 33s	hbase-client in the patch passed.
+1 💚	unit	217m 56s	hbase-server in the patch passed.
		241m 58s

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-4565/1/artifact/yetus-jdk8-hadoop3-check/output/Dockerfile
GITHUB PR	#4565
Optional Tests	javac javadoc unit shadedjars compile
uname	Linux f554d4596016 5.4.0-1025-aws #25~18.04.1-Ubuntu SMP Fri Sep 11 12:03:04 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/hbase-personality.sh
git revision	master / 9bae50f
Default Java	AdoptOpenJDK-1.8.0_282-b08
Test Results	https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-4565/1/testReport/
Max. process+thread count	2692 (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-4565/1/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 33s	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 _
+0 🆗	mvndep	0m 21s	Maven dependency ordering for branch
+1 💚	mvninstall	9m 4s	master passed
+1 💚	compile	1m 48s	master passed
+1 💚	shadedjars	5m 7s	branch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	0m 51s	master passed
		_ Patch Compile Tests _
+0 🆗	mvndep	0m 12s	Maven dependency ordering for patch
+1 💚	mvninstall	3m 45s	the patch passed
+1 💚	compile	1m 26s	the patch passed
+1 💚	javac	1m 26s	the patch passed
+1 💚	shadedjars	5m 30s	patch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	1m 9s	the patch passed
		_ Other Tests _
+1 💚	unit	2m 6s	hbase-client in the patch passed.
-1 ❌	unit	293m 57s	hbase-server in the patch failed.
		328m 32s

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-4565/1/artifact/yetus-jdk11-hadoop3-check/output/Dockerfile
GITHUB PR	#4565
Optional Tests	javac javadoc unit shadedjars compile
uname	Linux 3ba0fe9303e5 5.4.0-96-generic #109-Ubuntu SMP Wed Jan 12 16:49:16 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/hbase-personality.sh
git revision	master / 9bae50f
Default Java	AdoptOpenJDK-11.0.10+9
unit	https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-4565/1/artifact/yetus-jdk11-hadoop3-check/output/patch-unit-hbase-server.txt
Test Results	https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-4565/1/testReport/
Max. process+thread count	2475 (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-4565/1/console
versions	git=2.17.1 maven=3.6.3
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[bbeaudreault]

Test failure is a timeout in TestFuzzyRowFilterEndToEnd, unrelated. Merging.

Thanks for the review Andrew