HDFS-17066: RBF: The construction of the trash path in the downstream nameservice should be based on src locations.

[fuchaohong]

… should be based on src locations.

Description of PR

How was this patch tested?

For code changes:

• Does the title or this PR starts with the corresponding JIRA issue id (e.g. 'HADOOP-17799. Your PR title ...')?
• Object storage: have the integration tests been executed and the endpoint declared according to the connector-specific documentation?
• If adding new dependencies to the code, are these dependencies licensed in a way that is compatible for inclusion under ASF 2.0?
• If applicable, have you updated the LICENSE, LICENSE-binary, NOTICE-binary files?

[hadoop-yetus]

🎊 +1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	0m 42s		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.
+0 🆗	xmllint	0m 0s		xmllint was not available.
+1 💚	@author	0m 0s		The patch does not contain any @author tags.
+1 💚	test4tests	0m 0s		The patch appears to include 1 new or modified test files.
			_ trunk Compile Tests _
+1 💚	mvninstall	48m 33s		trunk passed
+1 💚	compile	0m 45s		trunk passed with JDK Ubuntu-11.0.19+7-post-Ubuntu-0ubuntu120.04.1
+1 💚	compile	0m 40s		trunk passed with JDK Private Build-1.8.0_362-8u372-gaus1-0ubuntu120.04-b09
+1 💚	checkstyle	0m 33s		trunk passed
+1 💚	mvnsite	0m 45s		trunk passed
+1 💚	javadoc	0m 48s		trunk passed with JDK Ubuntu-11.0.19+7-post-Ubuntu-0ubuntu120.04.1
+1 💚	javadoc	0m 34s		trunk passed with JDK Private Build-1.8.0_362-8u372-gaus1-0ubuntu120.04-b09
+1 💚	spotbugs	1m 33s		trunk passed
+1 💚	shadedclient	36m 46s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
+1 💚	mvninstall	0m 37s		the patch passed
+1 💚	compile	0m 39s		the patch passed with JDK Ubuntu-11.0.19+7-post-Ubuntu-0ubuntu120.04.1
+1 💚	javac	0m 39s		the patch passed
+1 💚	compile	0m 36s		the patch passed with JDK Private Build-1.8.0_362-8u372-gaus1-0ubuntu120.04-b09
+1 💚	javac	0m 36s		the patch passed
+1 💚	blanks	0m 0s		The patch has no blanks issues.
-0 ⚠️	checkstyle	0m 22s	/results-checkstyle-hadoop-hdfs-project_hadoop-hdfs-rbf.txt	hadoop-hdfs-project/hadoop-hdfs-rbf: The patch generated 2 new + 1 unchanged - 0 fixed = 3 total (was 1)
+1 💚	mvnsite	0m 37s		the patch passed
+1 💚	javadoc	0m 33s		the patch passed with JDK Ubuntu-11.0.19+7-post-Ubuntu-0ubuntu120.04.1
+1 💚	javadoc	0m 27s		the patch passed with JDK Private Build-1.8.0_362-8u372-gaus1-0ubuntu120.04-b09
+1 💚	spotbugs	1m 29s		the patch passed
+1 💚	shadedclient	37m 8s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
+1 💚	unit	21m 54s		hadoop-hdfs-rbf in the patch passed.
+1 💚	asflicense	0m 39s		The patch does not generate ASF License warnings.
		160m 30s

Subsystem	Report/Notes
Docker	ClientAPI=1.43 ServerAPI=1.43 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-5806/1/artifact/out/Dockerfile
GITHUB PR	#5806
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets xmllint
uname	Linux a68669a4e1a3 4.15.0-212-generic #223-Ubuntu SMP Tue May 23 13:09:22 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/bin/hadoop.sh
git revision	trunk / 88b4720
Default Java	Private Build-1.8.0_362-8u372-gaus1-0ubuntu120.04-b09
Multi-JDK versions	/usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.19+7-post-Ubuntu-0ubuntu120.04.1 /usr/lib/jvm/java-8-openjdk-amd64:Private Build-1.8.0_362-8u372-gaus1-0ubuntu120.04-b09
Test Results	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-5806/1/testReport/
Max. process+thread count	2539 (vs. ulimit of 5500)
modules	C: hadoop-hdfs-project/hadoop-hdfs-rbf U: hadoop-hdfs-project/hadoop-hdfs-rbf
Console output	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-5806/1/console
versions	git=2.25.1 maven=3.6.3 spotbugs=4.2.2
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