HDFS-16763. MoverTool: Make valid for the number of mover threads per DN.

[whbing]

Description of PR

https://issues.apache.org/jira/browse/HDFS-16763

When running the Mover tool, the number of mover threads per DN is always 1, resulting in very slow data movement.

This JIRA fixes the problem which the current config is invalid.

[hadoop-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	0m 41s		Docker mode activated.
			_ Prechecks _
+1 💚	dupname	0m 0s		No case conflicting files found.
+0 🆗	codespell	0m 0s		codespell was not available.
+0 🆗	detsecrets	0m 0s		detect-secrets was not available.
+1 💚	@author	0m 0s		The patch does not contain any @author tags.
-1 ❌	test4tests	0m 0s		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	41m 22s		trunk passed
+1 💚	compile	1m 49s		trunk passed with JDK Ubuntu-11.0.16+8-post-Ubuntu-0ubuntu120.04
+1 💚	compile	1m 32s		trunk passed with JDK Private Build-1.8.0_342-8u342-b07-0ubuntu1~20.04-b07
+1 💚	checkstyle	1m 23s		trunk passed
+1 💚	mvnsite	1m 47s		trunk passed
+1 💚	javadoc	1m 27s		trunk passed with JDK Ubuntu-11.0.16+8-post-Ubuntu-0ubuntu120.04
+1 💚	javadoc	1m 50s		trunk passed with JDK Private Build-1.8.0_342-8u342-b07-0ubuntu1~20.04-b07
+1 💚	spotbugs	4m 3s		trunk passed
+1 💚	shadedclient	26m 58s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
+1 💚	mvninstall	1m 31s		the patch passed
+1 💚	compile	1m 32s		the patch passed with JDK Ubuntu-11.0.16+8-post-Ubuntu-0ubuntu120.04
+1 💚	javac	1m 32s		the patch passed
+1 💚	compile	1m 24s		the patch passed with JDK Private Build-1.8.0_342-8u342-b07-0ubuntu1~20.04-b07
+1 💚	javac	1m 24s		the patch passed
+1 💚	blanks	0m 0s		The patch has no blanks issues.
-0 ⚠️	checkstyle	1m 9s	/results-checkstyle-hadoop-hdfs-project_hadoop-hdfs.txt	hadoop-hdfs-project/hadoop-hdfs: The patch generated 1 new + 251 unchanged - 0 fixed = 252 total (was 251)
+1 💚	mvnsite	1m 37s		the patch passed
+1 💚	javadoc	0m 57s		the patch passed with JDK Ubuntu-11.0.16+8-post-Ubuntu-0ubuntu120.04
+1 💚	javadoc	1m 39s		the patch passed with JDK Private Build-1.8.0_342-8u342-b07-0ubuntu1~20.04-b07
+1 💚	spotbugs	3m 55s		the patch passed
+1 💚	shadedclient	25m 32s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
-1 ❌	unit	233m 8s	/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt	hadoop-hdfs in the patch passed.
+1 💚	asflicense	1m 3s		The patch does not generate ASF License warnings.
		353m 48s

Reason	Tests
Failed junit tests	hadoop.hdfs.TestMaintenanceState
	hadoop.hdfs.TestDistributedFileSystemWithECFileWithRandomECPolicy
	hadoop.hdfs.TestWriteConfigurationToDFS
	hadoop.hdfs.TestErasureCodingPolicyWithSnapshot
	hadoop.hdfs.server.mover.TestStorageMover
	hadoop.tools.TestHdfsConfigFields
	hadoop.hdfs.server.mover.TestMover
	hadoop.hdfs.TestReadStripedFileWithDNFailure
	hadoop.hdfs.TestFsShellPermission
	hadoop.hdfs.TestApplyingStoragePolicy
	hadoop.hdfs.shortcircuit.TestShortCircuitLocalRead
	hadoop.hdfs.TestEncryptionZones
	hadoop.hdfs.server.sps.TestExternalStoragePolicySatisfier
	hadoop.hdfs.TestDFSInotifyEventInputStream

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4868/1/artifact/out/Dockerfile
GITHUB PR	#4868
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets
uname	Linux 7ad0bf3d05c0 4.15.0-191-generic #202-Ubuntu SMP Thu Aug 4 01:49:29 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/bin/hadoop.sh
git revision	trunk / dd30085
Default Java	Private Build-1.8.0_342-8u342-b07-0ubuntu1~20.04-b07
Multi-JDK versions	/usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.16+8-post-Ubuntu-0ubuntu120.04 /usr/lib/jvm/java-8-openjdk-amd64:Private Build-1.8.0_342-8u342-b07-0ubuntu1~20.04-b07
Test Results	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4868/1/testReport/
Max. process+thread count	3603 (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-4868/1/console
versions	git=2.25.1 maven=3.6.3 spotbugs=4.2.2
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[zhtttylz]

Should the default value of "dfs.datanode.mover.max.concurrent.moves" be consistent with "dfs.datanode.balance.max.concurrent.moves" at 100?