HDDS-1612. Add 'scmcli printTopology' shell command to print datanode…

[ChenSammi]

JIRA
https://issues.apache.org/jira/browse/HDDS-1612

[hadoop-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Comment
0	reexec	47	Docker mode activated.
		_ Prechecks _
+1	dupname	0	No case conflicting files found.
+1	@author	0	The patch does not contain any @author tags.
-1	test4tests	0	The patch doesn't appear to include any new or modified tests. Please justify why no new tests are needed for this patch. Also please list what manual steps were performed to verify this patch.
		_ trunk Compile Tests _
0	mvndep	14	Maven dependency ordering for branch
+1	mvninstall	543	trunk passed
+1	compile	306	trunk passed
+1	checkstyle	81	trunk passed
+1	mvnsite	0	trunk passed
+1	shadedclient	941	branch has no errors when building and testing our client artifacts.
+1	javadoc	168	trunk passed
0	spotbugs	338	Used deprecated FindBugs config; considering switching to SpotBugs.
+1	findbugs	529	trunk passed
		_ Patch Compile Tests _
0	mvndep	20	Maven dependency ordering for patch
+1	mvninstall	464	the patch passed
+1	compile	289	the patch passed
+1	cc	289	the patch passed
+1	javac	289	the patch passed
+1	checkstyle	83	the patch passed
+1	mvnsite	1	the patch passed
+1	whitespace	0	The patch has no whitespace issues.
+1	shadedclient	746	patch has no errors when building and testing our client artifacts.
+1	javadoc	167	the patch passed
+1	findbugs	546	the patch passed
		_ Other Tests _
+1	unit	263	hadoop-hdds in the patch passed.
-1	unit	1654	hadoop-ozone in the patch failed.
+1	asflicense	51	The patch does not generate ASF License warnings.
		7079

Reason	Tests
Failed junit tests	hadoop.ozone.client.rpc.TestWatchForCommit
	hadoop.hdds.scm.pipeline.TestRatisPipelineProvider

Subsystem	Report/Notes
Docker	Client=17.05.0-ce Server=17.05.0-ce base: https://builds.apache.org/job/hadoop-multibranch/job/PR-910/1/artifact/out/Dockerfile
GITHUB PR	#910
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient findbugs checkstyle cc
uname	Linux 3ab1c3bd8e35 4.4.0-144-generic #170~14.04.1-Ubuntu SMP Mon Mar 18 15:02:05 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	personality/hadoop.sh
git revision	trunk / 433e97c
Default Java	1.8.0_212
unit	https://builds.apache.org/job/hadoop-multibranch/job/PR-910/1/artifact/out/patch-unit-hadoop-ozone.txt
Test Results	https://builds.apache.org/job/hadoop-multibranch/job/PR-910/1/testReport/
Max. process+thread count	4887 (vs. ulimit of 5500)
modules	C: hadoop-hdds/common hadoop-hdds/tools U: hadoop-hdds
Console output	https://builds.apache.org/job/hadoop-multibranch/job/PR-910/1/console
versions	git=2.7.4 maven=3.3.9 findbugs=3.1.0-RC1
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