HADOOP-19710. [ABFS] Read Buffer Manager V2 should not be allowed untill implemented

[anujmodi2021]

Read Buffer Manager V2 is a Work in progress and not yet fully ready to be used.
This is to stop any user explicitly enabling the config to enable RBMV2.

JIRA: https://issues.apache.org/jira/browse/HADOOP-19710

[hadoop-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	0m 45s		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.
			_ branch-3.4 Compile Tests _
+1 💚	mvninstall	24m 18s		branch-3.4 passed
+1 💚	compile	0m 23s		branch-3.4 passed with JDK Ubuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04
+1 💚	compile	0m 19s		branch-3.4 passed with JDK Private Build-1.8.0_452-8u452-gaus1-0ubuntu120.04-b09
+1 💚	checkstyle	0m 17s		branch-3.4 passed
+1 💚	mvnsite	0m 27s		branch-3.4 passed
+1 💚	javadoc	0m 28s		branch-3.4 passed with JDK Ubuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04
+1 💚	javadoc	0m 19s		branch-3.4 passed with JDK Private Build-1.8.0_452-8u452-gaus1-0ubuntu120.04-b09
+1 💚	spotbugs	0m 46s		branch-3.4 passed
+1 💚	shadedclient	19m 27s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
+1 💚	mvninstall	0m 18s		the patch passed
+1 💚	compile	0m 19s		the patch passed with JDK Ubuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04
+1 💚	javac	0m 19s		the patch passed
+1 💚	compile	0m 16s		the patch passed with JDK Private Build-1.8.0_452-8u452-gaus1-0ubuntu120.04-b09
+1 💚	javac	0m 16s		the patch passed
+1 💚	blanks	0m 0s		The patch has no blanks issues.
+1 💚	checkstyle	0m 11s		the patch passed
+1 💚	mvnsite	0m 18s		the patch passed
+1 💚	javadoc	0m 16s		the patch passed with JDK Ubuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04
+1 💚	javadoc	0m 16s		the patch passed with JDK Private Build-1.8.0_452-8u452-gaus1-0ubuntu120.04-b09
+1 💚	spotbugs	0m 41s		the patch passed
+1 💚	shadedclient	19m 5s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
+1 💚	unit	2m 8s		hadoop-azure in the patch passed.
+1 💚	asflicense	0m 24s		The patch does not generate ASF License warnings.
		73m 12s

Subsystem	Report/Notes
Docker	ClientAPI=1.52 ServerAPI=1.52 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8169/2/artifact/out/Dockerfile
GITHUB PR	#8169
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets
uname	Linux f52c44c018b5 5.15.0-164-generic #174-Ubuntu SMP Fri Nov 14 20:25:16 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/bin/hadoop.sh
git revision	branch-3.4 / 9bd8e79
Default Java	Private Build-1.8.0_452-8u452-gaus1-0ubuntu120.04-b09
Multi-JDK versions	/usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04 /usr/lib/jvm/java-8-openjdk-amd64:Private Build-1.8.0_452-8u452-gaus1-0ubuntu120.04-b09
Test Results	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8169/2/testReport/
Max. process+thread count	552 (vs. ulimit of 5500)
modules	C: hadoop-tools/hadoop-azure U: hadoop-tools/hadoop-azure
Console output	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8169/2/console
versions	git=2.25.1 maven=3.6.3 spotbugs=4.2.2
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[anujmodi2021]

---

:::: AGGREGATED TEST RESULT ::::

============================================================
HNS-OAuth-DFS

[WARNING] Tests run: 178, Failures: 0, Errors: 0, Skipped: 3
[WARNING] Tests run: 886, Failures: 0, Errors: 0, Skipped: 231
[WARNING] Tests run: 182, Failures: 0, Errors: 0, Skipped: 32
[WARNING] Tests run: 274, Failures: 0, Errors: 0, Skipped: 23

============================================================
HNS-SharedKey-DFS

[WARNING] Tests run: 178, Failures: 0, Errors: 0, Skipped: 4
[WARNING] Tests run: 886, Failures: 0, Errors: 0, Skipped: 180
[WARNING] Tests run: 182, Failures: 0, Errors: 0, Skipped: 32
[WARNING] Tests run: 274, Failures: 0, Errors: 0, Skipped: 10

============================================================
NonHNS-SharedKey-DFS

[WARNING] Tests run: 178, Failures: 0, Errors: 0, Skipped: 10
[WARNING] Tests run: 870, Failures: 0, Errors: 0, Skipped: 437
[WARNING] Tests run: 182, Failures: 0, Errors: 0, Skipped: 33
[WARNING] Tests run: 274, Failures: 0, Errors: 0, Skipped: 11

============================================================
AppendBlob-HNS-OAuth-DFS

[WARNING] Tests run: 178, Failures: 0, Errors: 0, Skipped: 3
[WARNING] Tests run: 886, Failures: 0, Errors: 0, Skipped: 242
[WARNING] Tests run: 182, Failures: 0, Errors: 0, Skipped: 56
[WARNING] Tests run: 274, Failures: 0, Errors: 0, Skipped: 23

============================================================
NonHNS-SharedKey-Blob

[WARNING] Tests run: 178, Failures: 0, Errors: 0, Skipped: 10
[WARNING] Tests run: 870, Failures: 1, Errors: 0, Skipped: 288
[WARNING] Tests run: 182, Failures: 0, Errors: 0, Skipped: 27
[WARNING] Tests run: 274, Failures: 0, Errors: 0, Skipped: 11

============================================================
NonHNS-OAuth-DFS

[WARNING] Tests run: 178, Failures: 0, Errors: 0, Skipped: 10
[WARNING] Tests run: 870, Failures: 0, Errors: 0, Skipped: 442
[WARNING] Tests run: 182, Failures: 0, Errors: 0, Skipped: 33
[WARNING] Tests run: 274, Failures: 0, Errors: 0, Skipped: 24

============================================================
NonHNS-OAuth-Blob

[WARNING] Tests run: 178, Failures: 0, Errors: 0, Skipped: 10
[WARNING] Tests run: 870, Failures: 0, Errors: 0, Skipped: 303
[WARNING] Tests run: 182, Failures: 0, Errors: 0, Skipped: 27
[WARNING] Tests run: 274, Failures: 0, Errors: 0, Skipped: 24

============================================================
AppendBlob-NonHNS-OAuth-Blob

[WARNING] Tests run: 178, Failures: 0, Errors: 0, Skipped: 10
[WARNING] Tests run: 870, Failures: 0, Errors: 0, Skipped: 354
[WARNING] Tests run: 182, Failures: 0, Errors: 0, Skipped: 51
[WARNING] Tests run: 274, Failures: 0, Errors: 0, Skipped: 24

============================================================
HNS-Oauth-DFS-IngressBlob

[WARNING] Tests run: 178, Failures: 0, Errors: 0, Skipped: 3
[WARNING] Tests run: 886, Failures: 0, Errors: 0, Skipped: 366
[WARNING] Tests run: 182, Failures: 0, Errors: 0, Skipped: 32
[WARNING] Tests run: 274, Failures: 0, Errors: 0, Skipped: 23

============================================================
NonHNS-OAuth-DFS-IngressBlob

[WARNING] Tests run: 178, Failures: 0, Errors: 0, Skipped: 10
[WARNING] Tests run: 870, Failures: 0, Errors: 0, Skipped: 439
[WARNING] Tests run: 182, Failures: 0, Errors: 0, Skipped: 33
[WARNING] Tests run: 274, Failures: 0, Errors: 0, Skipped: 24