Backport HBASE-25093 the RSGroupBasedLoadBalancer#retainAssignment throws NPE

[nyl3532016]

No description provided.

[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	1m 45s	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 _
+0 🆗	mvndep	0m 15s	Maven dependency ordering for branch
+1 💚	mvninstall	3m 56s	branch-2 passed
+1 💚	checkstyle	1m 29s	branch-2 passed
+1 💚	spotbugs	2m 45s	branch-2 passed
		_ Patch Compile Tests _
+0 🆗	mvndep	0m 11s	Maven dependency ordering for patch
+1 💚	mvninstall	3m 36s	the patch passed
+1 💚	checkstyle	1m 26s	the patch passed
+1 💚	whitespace	0m 0s	The patch has no whitespace issues.
+1 💚	hadoopcheck	12m 50s	Patch does not cause any errors with Hadoop 3.1.2 3.2.1.
+1 💚	spotbugs	3m 3s	the patch passed
		_ Other Tests _
+1 💚	asflicense	0m 24s	The patch does not generate ASF License warnings.
		39m 46s

Subsystem	Report/Notes
Docker	Client=19.03.13 Server=19.03.13 base: https://ci-hadoop.apache.org/job/HBase/job/HBase-PreCommit-GitHub-PR/job/PR-2534/1/artifact/yetus-general-check/output/Dockerfile
GITHUB PR	#2534
Optional Tests	dupname asflicense spotbugs hadoopcheck hbaseanti checkstyle
uname	Linux 0bfe19ea0f61 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	branch-2 / 3beae80
Max. process+thread count	84 (vs. ulimit of 12500)
modules	C: hbase-server hbase-rsgroup U: .
Console output	https://ci-hadoop.apache.org/job/HBase/job/HBase-PreCommit-GitHub-PR/job/PR-2534/1/console
versions	git=2.17.1 maven=(cecedd343002696d0abb50b32b541b8a6ba2883f) spotbugs=3.1.12
Powered by	Apache Yetus 0.11.1 https://yetus.apache.org

This message was automatically generated.

[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	4m 1s	Docker mode activated.
-0 ⚠️	yetus	0m 7s	Unprocessed flag(s): --brief-report-file --spotbugs-strict-precheck --whitespace-eol-ignore-list --whitespace-tabs-ignore-list --quick-hadoopcheck
		_ Prechecks _
		_ branch-2 Compile Tests _
+0 🆗	mvndep	0m 15s	Maven dependency ordering for branch
+1 💚	mvninstall	4m 22s	branch-2 passed
+1 💚	compile	1m 30s	branch-2 passed
+1 💚	shadedjars	6m 40s	branch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	1m 5s	branch-2 passed
		_ Patch Compile Tests _
+0 🆗	mvndep	0m 21s	Maven dependency ordering for patch
+1 💚	mvninstall	3m 59s	the patch passed
+1 💚	compile	1m 32s	the patch passed
+1 💚	javac	1m 32s	the patch passed
+1 💚	shadedjars	6m 38s	patch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	1m 4s	the patch passed
		_ Other Tests _
+1 💚	unit	132m 0s	hbase-server in the patch passed.
+1 💚	unit	4m 3s	hbase-rsgroup in the patch passed.
		169m 56s

Subsystem	Report/Notes
Docker	Client=19.03.13 Server=19.03.13 base: https://ci-hadoop.apache.org/job/HBase/job/HBase-PreCommit-GitHub-PR/job/PR-2534/1/artifact/yetus-jdk11-hadoop3-check/output/Dockerfile
GITHUB PR	#2534
Optional Tests	javac javadoc unit shadedjars compile
uname	Linux a954286f5471 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 / 3beae80
Default Java	2020-01-14
Test Results	https://ci-hadoop.apache.org/job/HBase/job/HBase-PreCommit-GitHub-PR/job/PR-2534/1/testReport/
Max. process+thread count	4317 (vs. ulimit of 12500)
modules	C: hbase-server hbase-rsgroup U: .
Console output	https://ci-hadoop.apache.org/job/HBase/job/HBase-PreCommit-GitHub-PR/job/PR-2534/1/console
versions	git=2.17.1 maven=(cecedd343002696d0abb50b32b541b8a6ba2883f)
Powered by	Apache Yetus 0.11.1 https://yetus.apache.org

This message was automatically generated.

[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	6m 49s	Docker mode activated.
-0 ⚠️	yetus	0m 7s	Unprocessed flag(s): --brief-report-file --spotbugs-strict-precheck --whitespace-eol-ignore-list --whitespace-tabs-ignore-list --quick-hadoopcheck
		_ Prechecks _
		_ branch-2 Compile Tests _
+0 🆗	mvndep	0m 16s	Maven dependency ordering for branch
+1 💚	mvninstall	3m 33s	branch-2 passed
+1 💚	compile	1m 20s	branch-2 passed
+1 💚	shadedjars	5m 57s	branch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	1m 10s	branch-2 passed
		_ Patch Compile Tests _
+0 🆗	mvndep	0m 17s	Maven dependency ordering for patch
+1 💚	mvninstall	3m 26s	the patch passed
+1 💚	compile	1m 25s	the patch passed
+1 💚	javac	1m 25s	the patch passed
+1 💚	shadedjars	6m 3s	patch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	0m 58s	the patch passed
		_ Other Tests _
+1 💚	unit	147m 57s	hbase-server in the patch passed.
+1 💚	unit	4m 15s	hbase-rsgroup in the patch passed.
		185m 55s

Subsystem	Report/Notes
Docker	Client=19.03.13 Server=19.03.13 base: https://ci-hadoop.apache.org/job/HBase/job/HBase-PreCommit-GitHub-PR/job/PR-2534/1/artifact/yetus-jdk8-hadoop2-check/output/Dockerfile
GITHUB PR	#2534
Optional Tests	javac javadoc unit shadedjars compile
uname	Linux 85347644f8d8 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	branch-2 / 3beae80
Default Java	1.8.0_232
Test Results	https://ci-hadoop.apache.org/job/HBase/job/HBase-PreCommit-GitHub-PR/job/PR-2534/1/testReport/
Max. process+thread count	3787 (vs. ulimit of 12500)
modules	C: hbase-server hbase-rsgroup U: .
Console output	https://ci-hadoop.apache.org/job/HBase/job/HBase-PreCommit-GitHub-PR/job/PR-2534/1/console
versions	git=2.17.1 maven=(cecedd343002696d0abb50b32b541b8a6ba2883f)
Powered by	Apache Yetus 0.11.1 https://yetus.apache.org

This message was automatically generated.