HDFS-15685. [JDK 14] TestConfiguredFailoverProxyProvider#testResolveDomainNameUsingDNS fails.

[aajisaka]

JIRA: https://issues.apache.org/jira/browse/HDFS-15685

Manually tested in JDK 13, 14, and 16-ea.

[hadoop-yetus]

🎊 +1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	29m 55s		Docker mode activated.
			_ Prechecks _
+1 💚	dupname	0m 0s		No case conflicting files found.
+1 💚	@author	0m 0s		The patch does not contain any @author tags.
+1 💚		0m 0s	test4tests	The patch appears to include 1 new or modified test files.
			_ trunk Compile Tests _
+1 💚	mvninstall	34m 30s		trunk passed
+1 💚	compile	1m 3s		trunk passed with JDK Ubuntu-11.0.9.1+1-Ubuntu-0ubuntu1.18.04
+1 💚	compile	0m 54s		trunk passed with JDK Private Build-1.8.0_275-8u275-b01-0ubuntu1~18.04-b01
+1 💚	checkstyle	0m 26s		trunk passed
+1 💚	mvnsite	0m 56s		trunk passed
+1 💚	shadedclient	16m 45s		branch has no errors when building and testing our client artifacts.
+1 💚	javadoc	0m 41s		trunk passed with JDK Ubuntu-11.0.9.1+1-Ubuntu-0ubuntu1.18.04
+1 💚	javadoc	0m 38s		trunk passed with JDK Private Build-1.8.0_275-8u275-b01-0ubuntu1~18.04-b01
+0 🆗	spotbugs	2m 26s		Used deprecated FindBugs config; considering switching to SpotBugs.
+1 💚	findbugs	2m 24s		trunk passed
			_ Patch Compile Tests _
+1 💚	mvninstall	0m 51s		the patch passed
+1 💚	compile	0m 52s		the patch passed with JDK Ubuntu-11.0.9.1+1-Ubuntu-0ubuntu1.18.04
+1 💚	javac	0m 52s		the patch passed
+1 💚	compile	0m 46s		the patch passed with JDK Private Build-1.8.0_275-8u275-b01-0ubuntu1~18.04-b01
+1 💚	javac	0m 46s		the patch passed
+1 💚	checkstyle	0m 18s		the patch passed
+1 💚	mvnsite	0m 49s		the patch passed
+1 💚	whitespace	0m 0s		The patch has no whitespace issues.
+1 💚	shadedclient	15m 21s		patch has no errors when building and testing our client artifacts.
+1 💚	javadoc	0m 37s		the patch passed with JDK Ubuntu-11.0.9.1+1-Ubuntu-0ubuntu1.18.04
+1 💚	javadoc	0m 34s		the patch passed with JDK Private Build-1.8.0_275-8u275-b01-0ubuntu1~18.04-b01
+1 💚	findbugs	2m 32s		the patch passed
			_ Other Tests _
+1 💚	unit	2m 19s		hadoop-hdfs-client in the patch passed.
+1 💚	asflicense	0m 33s		The patch does not generate ASF License warnings.
		116m 39s

Subsystem	Report/Notes
Docker	ClientAPI=1.40 ServerAPI=1.40 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2465/1/artifact/out/Dockerfile
GITHUB PR	#2465
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient findbugs checkstyle
uname	Linux 92be35c5ddaf 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/bin/hadoop.sh
git revision	trunk / dd85a90
Default Java	Private Build-1.8.0_275-8u275-b01-0ubuntu1~18.04-b01
Multi-JDK versions	/usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.9.1+1-Ubuntu-0ubuntu1.18.04 /usr/lib/jvm/java-8-openjdk-amd64:Private Build-1.8.0_275-8u275-b01-0ubuntu1~18.04-b01
Test Results	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2465/1/testReport/
Max. process+thread count	693 (vs. ulimit of 5500)
modules	C: hadoop-hdfs-project/hadoop-hdfs-client U: hadoop-hdfs-project/hadoop-hdfs-client
Console output	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2465/1/console
versions	git=2.17.1 maven=3.6.0 findbugs=4.0.6
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[sunchao]

LGTM - thanks @aajisaka

[aajisaka]

Thank you @sunchao for your review.