HDFS-17692. [FGL] fix bug in getContentSummary method

[ZanderXu]

HDFS-17692. [FGL] fix bug in getContentSummary method.

2024-06-20 10:42:07,134 WARN  ipc.Server (Server.java:logException(3456)) [IPC Server handler 16 on default port 8020] - IPC Server handler 16 on default port 8020, call Call#95 Retry#0 org.apache.hadoop.hdfs.protocol.ClientProtocol.getContentSummary from 10.169.36.152:45816 java.lang.IllegalMonitorStateException: attempt to unlock read lock, not locked by current thread
        at java.util.concurrent.locks.ReentrantReadWriteLock$Sync.unmatchedUnlockException(ReentrantReadWriteLock.java:444)
        at java.util.concurrent.locks.ReentrantReadWriteLock$Sync.tryReleaseShared(ReentrantReadWriteLock.java:428)
        at java.util.concurrent.locks.AbstractQueuedSynchronizer.releaseShared(AbstractQueuedSynchronizer.java:1341)
        at java.util.concurrent.locks.ReentrantReadWriteLock$ReadLock.unlock(ReentrantReadWriteLock.java:881)
        at org.apache.hadoop.hdfs.server.namenode.FSNamesystemLock.readUnlock(FSNamesystemLock.java:172)
        at org.apache.hadoop.hdfs.server.namenode.fgl.FineGrainedFSNamesystemLock.readUnlock(FineGrainedFSNamesystemLock.java:78)
        at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.readUnlock(FSNamesystem.java:1894)
        at org.apache.hadoop.hdfs.server.namenode.ContentSummaryComputationContext.yield(ContentSummaryComputationContext.java:135)
        at org.apache.hadoop.hdfs.server.namenode.INodeDirectory.computeDirectoryContentSummary(INodeDirectory.java:744)
        at org.apache.hadoop.hdfs.server.namenode.INodeDirectory.computeContentSummary(INodeDirectory.java:704)
        at org.apache.hadoop.hdfs.server.namenode.INodeDirectory.computeDirectoryContentSummary(INodeDirectory.java:721)
        at org.apache.hadoop.hdfs.server.namenode.INodeDirectory.computeContentSummary(INodeDirectory.java:704)
        at org.apache.hadoop.hdfs.server.namenode.INodeDirectory.computeDirectoryContentSummary(INodeDirectory.java:721)
        at org.apache.hadoop.hdfs.server.namenode.INodeDirectory.computeContentSummary(INodeDirectory.java:704)
        at org.apache.hadoop.hdfs.server.namenode.INode.computeAndConvertContentSummary(INode.java:466)
        at org.apache.hadoop.hdfs.server.namenode.FSDirStatAndListingOp.getContentSummaryInt(FSDirStatAndListingOp.java:600)
        at org.apache.hadoop.hdfs.server.namenode.FSDirStatAndListingOp.getContentSummary(FSDirStatAndListingOp.java:144)
        at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getContentSummary(FSNamesystem.java:3644)
        at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.getContentSummary(NameNodeRpcServer.java:1744)

[hadoop-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	6m 59s		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.
			_ HDFS-17384 Compile Tests _
+1 💚	mvninstall	21m 49s		HDFS-17384 passed
+1 💚	compile	0m 44s		HDFS-17384 passed with JDK Ubuntu-11.0.25+9-post-Ubuntu-1ubuntu120.04
+1 💚	compile	0m 39s		HDFS-17384 passed with JDK Private Build-1.8.0_432-8u432-gaus1-0ubuntu220.04-ga
+1 💚	checkstyle	0m 38s		HDFS-17384 passed
+1 💚	mvnsite	0m 42s		HDFS-17384 passed
+1 💚	javadoc	0m 40s		HDFS-17384 passed with JDK Ubuntu-11.0.25+9-post-Ubuntu-1ubuntu120.04
+1 💚	javadoc	1m 6s		HDFS-17384 passed with JDK Private Build-1.8.0_432-8u432-gaus1-0ubuntu220.04-ga
+1 💚	spotbugs	1m 39s		HDFS-17384 passed
+1 💚	shadedclient	19m 53s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
+1 💚	mvninstall	0m 37s		the patch passed
+1 💚	compile	0m 37s		the patch passed with JDK Ubuntu-11.0.25+9-post-Ubuntu-1ubuntu120.04
+1 💚	javac	0m 37s		the patch passed
+1 💚	compile	0m 35s		the patch passed with JDK Private Build-1.8.0_432-8u432-gaus1-0ubuntu220.04-ga
+1 💚	javac	0m 35s		the patch passed
+1 💚	blanks	0m 0s		The patch has no blanks issues.
+1 💚	checkstyle	0m 28s		the patch passed
+1 💚	mvnsite	0m 37s		the patch passed
+1 💚	javadoc	0m 32s		the patch passed with JDK Ubuntu-11.0.25+9-post-Ubuntu-1ubuntu120.04
+1 💚	javadoc	1m 1s		the patch passed with JDK Private Build-1.8.0_432-8u432-gaus1-0ubuntu220.04-ga
+1 💚	spotbugs	1m 35s		the patch passed
+1 💚	shadedclient	19m 49s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
-1 ❌	unit	199m 40s	/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt	hadoop-hdfs in the patch passed.
+1 💚	asflicense	0m 31s		The patch does not generate ASF License warnings.
		280m 34s

Reason	Tests
Failed junit tests	hadoop.hdfs.TestDecommissionWithBackoffMonitor
	hadoop.hdfs.TestDecommission

Subsystem	Report/Notes
Docker	ClientAPI=1.47 ServerAPI=1.47 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7233/3/artifact/out/Dockerfile
GITHUB PR	#7233
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets
uname	Linux 0f775636fe1c 5.15.0-124-generic #134-Ubuntu SMP Fri Sep 27 20:20:17 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/bin/hadoop.sh
git revision	HDFS-17384 / 59de31e
Default Java	Private Build-1.8.0_432-8u432-gaus1-0ubuntu220.04-ga
Multi-JDK versions	/usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.25+9-post-Ubuntu-1ubuntu120.04 /usr/lib/jvm/java-8-openjdk-amd64:Private Build-1.8.0_432-8u432-gaus1-0ubuntu220.04-ga
Test Results	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7233/3/testReport/
Max. process+thread count	4121 (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-7233/3/console
versions	git=2.25.1 maven=3.6.3 spotbugs=4.2.2
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