HDFS-15946. Fix java doc in FSPermissionChecker

[tomscut]

JIRA: HDFS-15946

Fix java doc for org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker#hasAclPermission.

[hadoop-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	0m 57s		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 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	35m 8s		trunk passed
+1 💚	compile	1m 19s		trunk passed with JDK Ubuntu-11.0.10+9-Ubuntu-0ubuntu1.20.04
+1 💚	compile	1m 11s		trunk passed with JDK Private Build-1.8.0_282-8u282-b08-0ubuntu1~20.04-b08
+1 💚	checkstyle	1m 0s		trunk passed
+1 💚	mvnsite	1m 21s		trunk passed
+1 💚	javadoc	0m 52s		trunk passed with JDK Ubuntu-11.0.10+9-Ubuntu-0ubuntu1.20.04
+1 💚	javadoc	1m 26s		trunk passed with JDK Private Build-1.8.0_282-8u282-b08-0ubuntu1~20.04-b08
+1 💚	spotbugs	3m 15s		trunk passed
+1 💚	shadedclient	18m 47s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
+1 💚	mvninstall	1m 12s		the patch passed
+1 💚	compile	1m 16s		the patch passed with JDK Ubuntu-11.0.10+9-Ubuntu-0ubuntu1.20.04
+1 💚	javac	1m 16s		the patch passed
+1 💚	compile	1m 8s		the patch passed with JDK Private Build-1.8.0_282-8u282-b08-0ubuntu1~20.04-b08
+1 💚	javac	1m 8s		the patch passed
+1 💚	blanks	0m 0s		The patch has no blanks issues.
+1 💚	checkstyle	0m 54s		the patch passed
+1 💚	mvnsite	1m 15s		the patch passed
+1 💚	javadoc	0m 45s		the patch passed with JDK Ubuntu-11.0.10+9-Ubuntu-0ubuntu1.20.04
+1 💚	javadoc	1m 16s		the patch passed with JDK Private Build-1.8.0_282-8u282-b08-0ubuntu1~20.04-b08
+1 💚	spotbugs	3m 17s		the patch passed
+1 💚	shadedclient	18m 59s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
-1 ❌	unit	369m 57s	/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt	hadoop-hdfs in the patch passed.
+1 💚	asflicense	0m 39s		The patch does not generate ASF License warnings.
		463m 18s

Reason	Tests
Failed junit tests	hadoop.hdfs.qjournal.server.TestJournalNodeRespectsBindHostKeys
	hadoop.hdfs.server.namenode.TestFsck
	hadoop.hdfs.server.namenode.ha.TestPipelinesFailover
	hadoop.hdfs.server.datanode.TestBlockScanner
	hadoop.hdfs.server.namenode.ha.TestBootstrapStandby
	hadoop.hdfs.TestPersistBlocks
	hadoop.hdfs.server.datanode.TestBlockRecovery
	hadoop.hdfs.server.namenode.ha.TestEditLogTailer
	hadoop.hdfs.TestDFSShell
	hadoop.hdfs.server.namenode.snapshot.TestNestedSnapshots
	hadoop.hdfs.TestSnapshotCommands
	hadoop.hdfs.server.datanode.fsdataset.impl.TestFsVolumeList
	hadoop.hdfs.server.namenode.ha.TestSeveralNameNodes
	hadoop.hdfs.server.namenode.TestDecommissioningStatusWithBackoffMonitor
	hadoop.hdfs.server.namenode.TestDecommissioningStatus

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2855/1/artifact/out/Dockerfile
GITHUB PR	#2855
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell
uname	Linux 85efa224e9a9 4.15.0-136-generic #140-Ubuntu SMP Thu Jan 28 05:20:47 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/bin/hadoop.sh
git revision	trunk / c2904f8
Default Java	Private Build-1.8.0_282-8u282-b08-0ubuntu1~20.04-b08
Multi-JDK versions	/usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.10+9-Ubuntu-0ubuntu1.20.04 /usr/lib/jvm/java-8-openjdk-amd64:Private Build-1.8.0_282-8u282-b08-0ubuntu1~20.04-b08
Test Results	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2855/1/testReport/
Max. process+thread count	1966 (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-2855/1/console
versions	git=2.25.1 maven=3.6.3 spotbugs=4.2.2
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[tomscut]

Thanks @liuml07 for the review and merge.