HADOOP-19626. Updates AAL to v1.2.1.

[ahmarsuhail]

Description of PR

Updates to AAL v1.2.1, which brings in better memory management, as well as support for readVectored and SSE-C.

How was this patch tested?

in progress

[ahmarsuhail]

@steveloughran @mukund-thakur small PR to update AAL version. We've made a few improvements since 1.0.0, mainly in how memory is managed. So would be great to get 3.4.2 released with 1.2.1, instead of the current 1.0.0 version.

This also brings in support for readVectored, IoStats and SSE-C, which is required by the other PR's we have up.

[mukund-thakur]

Please add the test results before merging.

[steveloughran]

a provisional +1 pending that test result.

[hadoop-yetus]

🎊 +1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	8m 30s		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 _
+0 🆗	mvndep	29m 1s		Maven dependency ordering for branch
+1 💚	mvninstall	19m 55s		trunk passed
+1 💚	compile	8m 42s		trunk passed with JDK Ubuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04
+1 💚	compile	7m 26s		trunk passed with JDK Private Build-1.8.0_452-8u452-gaus1-0ubuntu120.04-b09
+1 💚	checkstyle	1m 59s		trunk passed
+1 💚	mvnsite	1m 7s		trunk passed
+1 💚	javadoc	1m 5s		trunk passed with JDK Ubuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04
+1 💚	javadoc	0m 59s		trunk passed with JDK Private Build-1.8.0_452-8u452-gaus1-0ubuntu120.04-b09
+0 🆗	spotbugs	0m 33s		branch/hadoop-project no spotbugs output file (spotbugsXml.xml)
+1 💚	shadedclient	21m 53s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
+0 🆗	mvndep	0m 25s		Maven dependency ordering for patch
+1 💚	mvninstall	0m 30s		the patch passed
+1 💚	compile	8m 10s		the patch passed with JDK Ubuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04
+1 💚	javac	8m 10s		the patch passed
+1 💚	compile	7m 31s		the patch passed with JDK Private Build-1.8.0_452-8u452-gaus1-0ubuntu120.04-b09
+1 💚	javac	7m 31s		the patch passed
+1 💚	blanks	0m 0s		The patch has no blanks issues.
+1 💚	checkstyle	1m 57s		the patch passed
+1 💚	mvnsite	1m 5s		the patch passed
+1 💚	javadoc	1m 0s		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
+0 🆗	spotbugs	0m 25s		hadoop-project has no data from spotbugs
+1 💚	shadedclient	22m 16s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
+1 💚	unit	0m 25s		hadoop-project in the patch passed.
+1 💚	unit	2m 56s		hadoop-aws in the patch passed.
+1 💚	asflicense	0m 44s		The patch does not generate ASF License warnings.
		154m 3s

Subsystem	Report/Notes
Docker	ClientAPI=1.51 ServerAPI=1.51 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7807/1/artifact/out/Dockerfile
GITHUB PR	#7807
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient codespell detsecrets xmllint spotbugs checkstyle
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Test Results	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7807/1/testReport/
Max. process+thread count	716 (vs. ulimit of 5500)
modules	C: hadoop-project hadoop-tools/hadoop-aws U: .
Console output	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7807/1/console
versions	git=2.25.1 maven=3.6.3 spotbugs=4.2.2
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[stubz151]

LGTM!

[ahmarsuhail]

@steveloughran @mukund-thakur since mosts tests are currently failing in trunk currently due to the Junit 5 migration, what is our strategy for running tests and getting things merged in?

Is it enough to test this on 3.4 and if all ok there merge here?

[mukund-thakur]

I think we can test this in 3.4 and merge. The failing tests in trunk would be unrelated to this change for sure.

[ahmarsuhail]

tested on branch 3.4 in eu-west-1, all good. found one unrelated failure: https://issues.apache.org/jira/browse/HADOOP-19627, will fix