Forward-port "HBASE-24662 Update DumpClusterStatusAction to notice changes in region server count" to branch-2

[ndimiduk]

Sometimes running chaos monkey, I've found that we lose accounting of
region servers. I've taken to a manual process of checking the
reported list against a known reference. It occurs to me that
ChaosMonkey has a known reference, and it can do this accounting for
me.

Signed-off-by: Viraj Jasani [email protected]

[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	2m 4s	Docker mode activated.
-0 ⚠️	yetus	0m 5s	Unprocessed flag(s): --brief-report-file --spotbugs-strict-precheck --whitespace-eol-ignore-list --whitespace-tabs-ignore-list --quick-hadoopcheck
		_ Prechecks _
		_ branch-2 Compile Tests _
+1 💚	mvninstall	4m 39s	branch-2 passed
+1 💚	compile	0m 30s	branch-2 passed
+1 💚	shadedjars	6m 36s	branch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	0m 17s	branch-2 passed
		_ Patch Compile Tests _
+1 💚	mvninstall	4m 3s	the patch passed
+1 💚	compile	0m 30s	the patch passed
+1 💚	javac	0m 30s	the patch passed
+1 💚	shadedjars	6m 17s	patch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	0m 14s	the patch passed
		_ Other Tests _
+1 💚	unit	1m 8s	hbase-it in the patch passed.
		27m 45s

Subsystem	Report/Notes
Docker	Client=19.03.12 Server=19.03.12 base: https://builds.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-2116/1/artifact/yetus-jdk8-hadoop2-check/output/Dockerfile
GITHUB PR	#2116
Optional Tests	javac javadoc unit shadedjars compile
uname	Linux cb9daecb172a 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	branch-2 / 5bb76bf
Default Java	1.8.0_232
Test Results	https://builds.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-2116/1/testReport/
Max. process+thread count	706 (vs. ulimit of 12500)
modules	C: hbase-it U: hbase-it
Console output	https://builds.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-2116/1/console
versions	git=2.17.1 maven=(cecedd343002696d0abb50b32b541b8a6ba2883f)
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[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	2m 29s	Docker mode activated.
-0 ⚠️	yetus	0m 6s	Unprocessed flag(s): --brief-report-file --spotbugs-strict-precheck --whitespace-eol-ignore-list --whitespace-tabs-ignore-list --quick-hadoopcheck
		_ Prechecks _
		_ branch-2 Compile Tests _
+1 💚	mvninstall	5m 49s	branch-2 passed
+1 💚	compile	0m 35s	branch-2 passed
+1 💚	shadedjars	7m 20s	branch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	0m 18s	branch-2 passed
		_ Patch Compile Tests _
+1 💚	mvninstall	5m 11s	the patch passed
+1 💚	compile	0m 41s	the patch passed
+1 💚	javac	0m 41s	the patch passed
+1 💚	shadedjars	7m 59s	patch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	0m 16s	the patch passed
		_ Other Tests _
+1 💚	unit	1m 12s	hbase-it in the patch passed.
		33m 19s

Subsystem	Report/Notes
Docker	Client=19.03.12 Server=19.03.12 base: https://builds.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-2116/1/artifact/yetus-jdk11-hadoop3-check/output/Dockerfile
GITHUB PR	#2116
Optional Tests	javac javadoc unit shadedjars compile
uname	Linux 24cd93fa5411 4.15.0-74-generic #84-Ubuntu SMP Thu Dec 19 08:06:28 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/hbase-personality.sh
git revision	branch-2 / 5bb76bf
Default Java	2020-01-14
Test Results	https://builds.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-2116/1/testReport/
Max. process+thread count	679 (vs. ulimit of 12500)
modules	C: hbase-it U: hbase-it
Console output	https://builds.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-2116/1/console
versions	git=2.17.1 maven=(cecedd343002696d0abb50b32b541b8a6ba2883f)
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[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	0m 55s	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.
		_ branch-2 Compile Tests _
+1 💚	mvninstall	4m 55s	branch-2 passed
+1 💚	checkstyle	0m 22s	branch-2 passed
+1 💚	spotbugs	0m 0s	branch-2 passed
		_ Patch Compile Tests _
+1 💚	mvninstall	4m 11s	the patch passed
+1 💚	checkstyle	0m 21s	the patch passed
+1 💚	whitespace	0m 0s	The patch has no whitespace issues.
+1 💚	hadoopcheck	14m 18s	Patch does not cause any errors with Hadoop 3.1.2 3.2.1.
+1 💚	spotbugs	0m 0s	the patch passed
		_ Other Tests _
+1 💚	asflicense	0m 14s	The patch does not generate ASF License warnings.
		34m 17s

Subsystem	Report/Notes
Docker	Client=19.03.12 Server=19.03.12 base: https://builds.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-2116/1/artifact/yetus-general-check/output/Dockerfile
GITHUB PR	#2116
Optional Tests	dupname asflicense spotbugs hadoopcheck hbaseanti checkstyle
uname	Linux 3a37e30185d6 4.15.0-60-generic #67-Ubuntu SMP Thu Aug 22 16:55:30 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/hbase-personality.sh
git revision	branch-2 / 5bb76bf
Max. process+thread count	79 (vs. ulimit of 12500)
modules	C: hbase-it U: hbase-it
Console output	https://builds.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-2116/1/console
versions	git=2.17.1 maven=(cecedd343002696d0abb50b32b541b8a6ba2883f)
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