HDFS-16604. Install gtest via FetchContent_Declare in CMake

[GauthamBanasandra]

Description of PR

CMake is unable to checkout release-1.10.0 version of GoogleTest -

[WARNING] -- Build files have been written to: /home/jenkins/jenkins-home/workspace/hadoop-multibranch_PR-4370/centos-7/src/hadoop-hdfs-project/hadoop-hdfs-native-client/target/main/native/libhdfspp/googletest-download
[WARNING] Scanning dependencies of target googletest
[WARNING] [ 11%] Creating directories for 'googletest'
[WARNING] [ 22%] Performing download step (git clone) for 'googletest'
[WARNING] Cloning into 'googletest-src'...
[WARNING] fatal: invalid reference: release-1.10.0
[WARNING] CMake Error at googletest-download/googletest-prefix/tmp/googletest-gitclone.cmake:40 (message):
[WARNING]   Failed to checkout tag: 'release-1.10.0'
[WARNING] 
[WARNING] 
[WARNING] gmake[2]: *** [CMakeFiles/googletest.dir/build.make:111: googletest-prefix/src/googletest-stamp/googletest-download] Error 1
[WARNING] gmake[1]: *** [CMakeFiles/Makefile2:95: CMakeFiles/googletest.dir/all] Error 2
[WARNING] gmake: *** [Makefile:103: all] Error 2
[WARNING] CMake Error at main/native/libhdfspp/CMakeLists.txt:68 (message):
[WARNING]   Build step for googletest failed: 2

Jenkins run - https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4370/6/artifact/out/branch-compile-hadoop-hdfs-project_hadoop-hdfs-native-client.txt

We need to use FetchContent_Declare since we're getting the source code exactly at the given commit SHA. This avoids the checkout step altogether and solves the above issue.

How was this patch tested?

Hadoop Jenkins CI run.

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	1m 16s		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 37s		trunk passed
-1 ❌	compile	0m 36s	/branch-compile-hadoop-hdfs-project_hadoop-hdfs-native-client.txt	hadoop-hdfs-native-client in trunk failed.
+1 💚	mvnsite	0m 38s		trunk passed
+1 💚	shadedclient	64m 5s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
+1 💚	mvninstall	0m 22s		the patch passed
+1 💚	compile	3m 48s		the patch passed
-1 ❌	cc	3m 48s	/results-compile-cc-hadoop-hdfs-project_hadoop-hdfs-native-client.txt	hadoop-hdfs-project_hadoop-hdfs-native-client generated 8 new + 0 unchanged - 0 fixed = 8 total (was 0)
+1 💚	golang	3m 48s		the patch passed
+1 💚	javac	3m 48s		the patch passed
+1 💚	blanks	0m 0s		The patch has no blanks issues.
+1 💚	mvnsite	0m 23s		the patch passed
+1 💚	shadedclient	22m 9s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
+1 💚	unit	109m 16s		hadoop-hdfs-native-client in the patch passed.
+1 💚	asflicense	0m 47s		The patch does not generate ASF License warnings.
		204m 33s

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4374/2/artifact/out/Dockerfile
GITHUB PR	#4374
Optional Tests	dupname asflicense compile cc mvnsite javac unit codespell detsecrets golang
uname	Linux 359669dceff6 4.15.0-175-generic #184-Ubuntu SMP Thu Mar 24 17:48:36 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/bin/hadoop.sh
git revision	trunk / abf9bdc
Default Java	Red Hat, Inc.-1.8.0_332-b09
Test Results	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4374/2/testReport/
Max. process+thread count	519 (vs. ulimit of 5500)
modules	C: hadoop-hdfs-project/hadoop-hdfs-native-client U: hadoop-hdfs-project/hadoop-hdfs-native-client
Console output	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4374/2/console
versions	git=2.9.5 maven=3.6.3
Powered by	Apache Yetus 0.14.0 https://yetus.apache.org

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[GauthamBanasandra]

Just to explain the failures in the CI run above - #4374 (comment),

The trunk has failed to build hadoop-hdfs-native-client. This failure is expected since CMake is unable to checkout release-1.10.0 in gtest causing the build to fail altogether. (Which is what has been fixed by this PR).

These warnings aren't introduced by this PR. They exist in the trunk as well. These warnings aren't showing up in the trunk because hadoop-hdfs-native-client isn't getting built on trunk in the first place.

In conclusion, once we merge this PR to trunk, the above failures won't show up for those PRs which are newly created, or those which gets rebased on top of trunk.

[hadoop-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	39m 26s		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	37m 52s		trunk passed
-1 ❌	compile	0m 47s	/branch-compile-hadoop-hdfs-project_hadoop-hdfs-native-client.txt	hadoop-hdfs-native-client in trunk failed.
+1 💚	mvnsite	0m 47s		trunk passed
+1 💚	javadoc	0m 50s		trunk passed
+1 💚	shadedclient	59m 1s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
+1 💚	mvninstall	0m 24s		the patch passed
+1 💚	compile	3m 40s		the patch passed
-1 ❌	cc	3m 40s	/results-compile-cc-hadoop-hdfs-project_hadoop-hdfs-native-client.txt	hadoop-hdfs-project_hadoop-hdfs-native-client generated 8 new + 0 unchanged - 0 fixed = 8 total (was 0)
+1 💚	golang	3m 40s		the patch passed
+1 💚	javac	3m 40s		the patch passed
+1 💚	blanks	0m 0s		The patch has no blanks issues.
+1 💚	mvnsite	0m 27s		the patch passed
+1 💚	javadoc	0m 22s		the patch passed
+1 💚	shadedclient	19m 58s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
+1 💚	unit	34m 53s		hadoop-hdfs-native-client in the patch passed.
+1 💚	asflicense	0m 50s		The patch does not generate ASF License warnings.
		161m 16s

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4374/6/artifact/out/Dockerfile
GITHUB PR	#4374
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient codespell detsecrets cc golang
uname	Linux d82b0a18e275 4.15.0-156-generic #163-Ubuntu SMP Thu Aug 19 23:31:58 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/bin/hadoop.sh
git revision	trunk / 00f704b
Default Java	Red Hat, Inc.-1.8.0_332-b09
Test Results	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4374/6/testReport/
Max. process+thread count	545 (vs. ulimit of 5500)
modules	C: hadoop-hdfs-project/hadoop-hdfs-native-client U: hadoop-hdfs-project/hadoop-hdfs-native-client
Console output	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4374/6/console
versions	git=2.9.5 maven=3.6.3
Powered by	Apache Yetus 0.14.0 https://yetus.apache.org

This message was automatically generated.

[aajisaka]

Merged. Thank you @GauthamBanasandra @goiri