HDFS-15989. Split TestBalancer and De-flake testMaxIterationTime()

[virajjasani]

branch-3.1 backport of PR #2923

Signed-off-by: Akira Ajisaka aajisaka@apache.org
Signed-off-by: Takanobu Asanuma tasanuma@apache.org

[hadoop-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	1m 18s		Docker mode activated.
			_ Prechecks _
+1 💚	dupname	0m 0s		No case conflicting files found.
+0 🆗	codespell	0m 0s		codespell was not available.
+1 💚	@author	0m 0s		The patch does not contain any @author tags.
+1 💚	test4tests	0m 0s		The patch appears to include 2 new or modified test files.
			_ branch-3.1 Compile Tests _
+1 💚	mvninstall	29m 53s		branch-3.1 passed
+1 💚	compile	1m 2s		branch-3.1 passed
+1 💚	checkstyle	0m 48s		branch-3.1 passed
+1 💚	mvnsite	1m 14s		branch-3.1 passed
+1 💚	javadoc	0m 55s		branch-3.1 passed
-1 ❌	spotbugs	3m 10s	/branch-spotbugs-hadoop-hdfs-project_hadoop-hdfs-warnings.html	hadoop-hdfs-project/hadoop-hdfs in branch-3.1 has 4 extant spotbugs warnings.
+1 💚	shadedclient	17m 20s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
+1 💚	mvninstall	1m 23s		the patch passed
+1 💚	compile	1m 12s		the patch passed
+1 💚	javac	1m 12s		hadoop-hdfs-project_hadoop-hdfs generated 0 new + 523 unchanged - 1 fixed = 523 total (was 524)
+1 💚	blanks	0m 0s		The patch has no blanks issues.
-0 ⚠️	checkstyle	0m 45s	/results-checkstyle-hadoop-hdfs-project_hadoop-hdfs.txt	hadoop-hdfs-project/hadoop-hdfs: The patch generated 10 new + 149 unchanged - 49 fixed = 159 total (was 198)
+1 💚	mvnsite	1m 17s		the patch passed
+1 💚	javadoc	0m 53s		the patch passed
+1 💚	spotbugs	3m 18s		the patch passed
+1 💚	shadedclient	18m 35s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
-1 ❌	unit	191m 18s	/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt	hadoop-hdfs in the patch failed.
+1 💚	asflicense	0m 47s		The patch does not generate ASF License warnings.
		272m 8s

Reason	Tests
Failed junit tests	hadoop.hdfs.server.blockmanagement.TestBlockManager
	hadoop.fs.TestHdfsNativeCodeLoader
	hadoop.hdfs.server.datanode.TestBlockRecovery
	hadoop.hdfs.server.namenode.TestFsck

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2944/1/artifact/out/Dockerfile
GITHUB PR	#2944
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell
uname	Linux efd6f13129f6 4.15.0-101-generic #102-Ubuntu SMP Mon May 11 10:07:26 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/bin/hadoop.sh
git revision	branch-3.1 / f75d068
Default Java	Private Build-1.8.0_282-8u282-b08-0ubuntu1~18.04-b08
Test Results	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2944/1/testReport/
Max. process+thread count	1893 (vs. ulimit of 5500)
modules	C: hadoop-hdfs-project/hadoop-hdfs U: hadoop-hdfs-project/hadoop-hdfs
Console output	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2944/1/console
versions	git=2.17.1 maven=3.6.0 spotbugs=4.2.2
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[tasanuma]

Somehow Jenkins didn't work. But it just deleted the unused import from the last report of Jenkins and I think the latest commit is valid. I confirmed mvn clean install -DskipTests was succeeded in my local environment. +1.

[tasanuma]

Merged. Thanks for your contribution, @virajjasani!