HDDS-1896. Suppress WARN log from NetworkTopology#getDistanceCost. Co…

[xiaoyuyao]

No description provided.

[hadoop-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Comment
0	reexec	71	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 _
+1	mvninstall	597	trunk passed
+1	compile	369	trunk passed
+1	checkstyle	76	trunk passed
+1	mvnsite	0	trunk passed
+1	shadedclient	865	branch has no errors when building and testing our client artifacts.
+1	javadoc	166	trunk passed
0	spotbugs	422	Used deprecated FindBugs config; considering switching to SpotBugs.
+1	findbugs	615	trunk passed
		_ Patch Compile Tests _
+1	mvninstall	548	the patch passed
+1	compile	360	the patch passed
+1	javac	360	the patch passed
+1	checkstyle	80	the patch passed
+1	mvnsite	0	the patch passed
+1	whitespace	0	The patch has no whitespace issues.
+1	shadedclient	688	patch has no errors when building and testing our client artifacts.
+1	javadoc	159	the patch passed
+1	findbugs	637	the patch passed
		_ Other Tests _
+1	unit	356	hadoop-hdds in the patch passed.
-1	unit	2571	hadoop-ozone in the patch failed.
+1	asflicense	38	The patch does not generate ASF License warnings.
		8371

Reason	Tests
Failed junit tests	hadoop.ozone.client.rpc.TestSecureOzoneRpcClient
	hadoop.ozone.client.rpc.TestMultiBlockWritesWithDnFailures
	hadoop.ozone.client.rpc.TestOzoneAtRestEncryption
	hadoop.hdds.scm.pipeline.TestRatisPipelineCreateAndDestory
	hadoop.ozone.client.rpc.TestBlockOutputStreamWithFailures
	hadoop.ozone.client.rpc.TestOzoneRpcClient
	hadoop.ozone.om.TestScmSafeMode
	hadoop.ozone.client.rpc.TestWatchForCommit
	hadoop.ozone.client.rpc.TestOzoneRpcClientWithRatis

Subsystem	Report/Notes
Docker	Client=19.03.1 Server=19.03.1 base: https://builds.apache.org/job/hadoop-multibranch/job/PR-1214/1/artifact/out/Dockerfile
GITHUB PR	#1214
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient findbugs checkstyle
uname	Linux 1693f953a1d7 4.4.0-138-generic #164-Ubuntu SMP Tue Oct 2 17:16:02 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	personality/hadoop.sh
git revision	trunk / b5c74d4
Default Java	1.8.0_222
unit	https://builds.apache.org/job/hadoop-multibranch/job/PR-1214/1/artifact/out/patch-unit-hadoop-ozone.txt
Test Results	https://builds.apache.org/job/hadoop-multibranch/job/PR-1214/1/testReport/
Max. process+thread count	4844 (vs. ulimit of 5500)
modules	C: hadoop-hdds/common U: hadoop-hdds/common
Console output	https://builds.apache.org/job/hadoop-multibranch/job/PR-1214/1/console
versions	git=2.7.4 maven=3.3.9 findbugs=3.1.0-RC1
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[bharatviswa504]

+1 LGTM.

[bharatviswa504]

Test failures are not related to this patch.
Thank You @xiaoyuyao for the fix.
I have committed this to the trunk.