HADOOP-19627. S3A: testIfMatchOverwriteWithOutdatedEtag() fails when not using SSE-KMS

[ahmarsuhail]

Description of PR

We were previously creating second file with the same object content, so the etag will always be the same, leading to test failures, except when testing with an encryption method set, as in that case eTag is no longer the md5.

How was this patch tested?

Can't test on trunk as the all tests in this class fail due to the Junit5 migration. Tested on 3.4 with and without SSE-KMS, all good.

[ahmarsuhail]

@steveloughran @mukund-thakur small one to fix a test failure I noticed.

[hadoop-yetus]

🎊 +1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	0m 22s		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 appears to include 1 new or modified test files.
			_ trunk Compile Tests _
+1 💚	mvninstall	40m 43s		trunk passed
+1 💚	compile	0m 29s		trunk passed with JDK Ubuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04
+1 💚	compile	0m 23s		trunk passed with JDK Private Build-1.8.0_452-8u452-gaus1-0ubuntu120.04-b09
+1 💚	checkstyle	0m 24s		trunk passed
+1 💚	mvnsite	0m 34s		trunk passed
+1 💚	javadoc	0m 30s		trunk passed with JDK Ubuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04
+1 💚	javadoc	0m 25s		trunk passed with JDK Private Build-1.8.0_452-8u452-gaus1-0ubuntu120.04-b09
+1 💚	spotbugs	0m 49s		trunk passed
+1 💚	shadedclient	20m 39s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
+1 💚	mvninstall	0m 21s		the patch passed
+1 💚	compile	0m 23s		the patch passed with JDK Ubuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04
+1 💚	javac	0m 23s		the patch passed
+1 💚	compile	0m 17s		the patch passed with JDK Private Build-1.8.0_452-8u452-gaus1-0ubuntu120.04-b09
+1 💚	javac	0m 17s		the patch passed
+1 💚	blanks	0m 0s		The patch has no blanks issues.
+1 💚	checkstyle	0m 13s		the patch passed
+1 💚	mvnsite	0m 21s		the patch passed
+1 💚	javadoc	0m 20s		the patch passed with JDK Ubuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04
+1 💚	javadoc	0m 18s		the patch passed with JDK Private Build-1.8.0_452-8u452-gaus1-0ubuntu120.04-b09
+1 💚	spotbugs	0m 43s		the patch passed
+1 💚	shadedclient	20m 57s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
+1 💚	unit	2m 43s		hadoop-aws in the patch passed.
+1 💚	asflicense	0m 26s		The patch does not generate ASF License warnings.
		93m 18s

Subsystem	Report/Notes
Docker	ClientAPI=1.51 ServerAPI=1.51 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7816/1/artifact/out/Dockerfile
GITHUB PR	#7816
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets
uname	Linux 0912578b8b09 5.15.0-142-generic #152-Ubuntu SMP Mon May 19 10:54:31 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/bin/hadoop.sh
git revision	trunk / 252b3f0
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-7816/1/testReport/
Max. process+thread count	669 (vs. ulimit of 5500)
modules	C: hadoop-tools/hadoop-aws U: hadoop-tools/hadoop-aws
Console output	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7816/1/console
versions	git=2.25.1 maven=3.6.3 spotbugs=4.2.2
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[steveloughran]

+1

[steveloughran]

approved, do use that updated title though; backport as required.