HADOOP-19559. Backport of Updates S3A default stream to AAL, IoStats.

[ahmarsuhail]

Description of PR

Backports: #8095, #8007

How was this patch tested?

in progress

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	7m 37s		Docker mode activated.
			_ Prechecks _
+1 💚	dupname	0m 0s		No case conflicting files found.
+0 🆗	codespell	0m 1s		codespell was not available.
+0 🆗	detsecrets	0m 1s		detect-secrets was not available.
+1 💚	@author	0m 0s		The patch does not contain any @author tags.
+1 💚	test4tests	0m 0s		The patch appears to include 17 new or modified test files.
			_ branch-3.4 Compile Tests _
+0 🆗	mvndep	2m 7s		Maven dependency ordering for branch
+1 💚	mvninstall	25m 4s		branch-3.4 passed
+1 💚	compile	10m 6s		branch-3.4 passed with JDK Ubuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04
+1 💚	compile	9m 4s		branch-3.4 passed with JDK Private Build-1.8.0_452-8u452-gaus1-0ubuntu120.04-b09
+1 💚	checkstyle	2m 9s		branch-3.4 passed
+1 💚	mvnsite	1m 19s		branch-3.4 passed
+1 💚	javadoc	1m 3s		branch-3.4 passed with JDK Ubuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04
+1 💚	javadoc	0m 50s		branch-3.4 passed with JDK Private Build-1.8.0_452-8u452-gaus1-0ubuntu120.04-b09
+1 💚	spotbugs	2m 2s		branch-3.4 passed
+1 💚	shadedclient	22m 30s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
+0 🆗	mvndep	0m 22s		Maven dependency ordering for patch
+1 💚	mvninstall	0m 49s		the patch passed
+1 💚	compile	9m 36s		the patch passed with JDK Ubuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04
+1 💚	javac	9m 36s		the patch passed
+1 💚	compile	9m 13s		the patch passed with JDK Private Build-1.8.0_452-8u452-gaus1-0ubuntu120.04-b09
+1 💚	javac	9m 13s		the patch passed
-1 ❌	blanks	0m 0s	/blanks-eol.txt	The patch has 1 line(s) that end in blanks. Use git apply --whitespace=fix <<patch_file>>. Refer https://git-scm.com/docs/git-apply
-0 ⚠️	checkstyle	1m 58s	/results-checkstyle-root.txt	root: The patch generated 25 new + 7 unchanged - 0 fixed = 32 total (was 7)
+1 💚	mvnsite	1m 15s		the patch passed
+1 💚	javadoc	0m 57s		the patch passed with JDK Ubuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04
+1 💚	javadoc	0m 52s		the patch passed with JDK Private Build-1.8.0_452-8u452-gaus1-0ubuntu120.04-b09
+1 💚	spotbugs	2m 17s		the patch passed
+1 💚	shadedclient	21m 30s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
+1 💚	unit	15m 12s		hadoop-common in the patch passed.
-1 ❌	unit	2m 2s	/patch-unit-hadoop-tools_hadoop-aws.txt	hadoop-aws in the patch passed.
+1 💚	asflicense	0m 34s		The patch does not generate ASF License warnings.
		153m 47s

Reason	Tests
Failed junit tests	hadoop.fs.s3a.TestS3AUnbuffer
	hadoop.fs.s3a.impl.streams.TestStreamFactories

Subsystem	Report/Notes
Docker	ClientAPI=1.52 ServerAPI=1.52 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8099/1/artifact/out/Dockerfile
GITHUB PR	#8099
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets
uname	Linux 38b9c75d98e3 5.15.0-156-generic #166-Ubuntu SMP Sat Aug 9 00:02:46 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/bin/hadoop.sh
git revision	branch-3.4 / 928b510
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-8099/1/testReport/
Max. process+thread count	3153 (vs. ulimit of 5500)
modules	C: hadoop-common-project/hadoop-common hadoop-tools/hadoop-aws U: .
Console output	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8099/1/console
versions	git=2.25.1 maven=3.6.3 spotbugs=4.2.2
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