HDFS-15476 Make AsyncStream executor private

[surnaik]

The executor_ member of the AsyncStream class is public, but there is a getter get_executor() that returns this executor_ member. This member should be private.

[hadoop-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	1m 5s	Docker mode activated.
		_ Prechecks _
+1 💚	dupname	0m 0s	No case conflicting files found.
+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.
		_ trunk Compile Tests _
+1 💚	mvninstall	24m 8s	trunk passed
+1 💚	compile	2m 13s	trunk passed with JDK Ubuntu-11.0.7+10-post-Ubuntu-2ubuntu218.04
+1 💚	compile	2m 6s	trunk passed with JDK Private Build-1.8.0_252-8u252-b09-1~18.04-b09
+1 💚	mvnsite	0m 20s	trunk passed
+1 💚	shadedclient	44m 44s	branch has no errors when building and testing our client artifacts.
		_ Patch Compile Tests _
+1 💚	mvninstall	0m 15s	the patch passed
-1 ❌	compile	1m 28s	hadoop-hdfs-native-client in the patch failed with JDK Ubuntu-11.0.7+10-post-Ubuntu-2ubuntu218.04.
-1 ❌	cc	1m 28s	hadoop-hdfs-native-client in the patch failed with JDK Ubuntu-11.0.7+10-post-Ubuntu-2ubuntu218.04.
-1 ❌	golang	1m 28s	hadoop-hdfs-native-client in the patch failed with JDK Ubuntu-11.0.7+10-post-Ubuntu-2ubuntu218.04.
-1 ❌	javac	1m 28s	hadoop-hdfs-native-client in the patch failed with JDK Ubuntu-11.0.7+10-post-Ubuntu-2ubuntu218.04.
-1 ❌	compile	1m 31s	hadoop-hdfs-native-client in the patch failed with JDK Private Build-1.8.0_252-8u252-b09-1~18.04-b09.
-1 ❌	cc	1m 31s	hadoop-hdfs-native-client in the patch failed with JDK Private Build-1.8.0_252-8u252-b09-1~18.04-b09.
-1 ❌	golang	1m 31s	hadoop-hdfs-native-client in the patch failed with JDK Private Build-1.8.0_252-8u252-b09-1~18.04-b09.
-1 ❌	javac	1m 31s	hadoop-hdfs-native-client in the patch failed with JDK Private Build-1.8.0_252-8u252-b09-1~18.04-b09.
+1 💚	mvnsite	0m 14s	the patch passed
+1 💚	whitespace	0m 0s	The patch has no whitespace issues.
+1 💚	shadedclient	16m 34s	patch has no errors when building and testing our client artifacts.
		_ Other Tests _
-1 ❌	unit	1m 58s	hadoop-hdfs-native-client in the patch failed.
+1 💚	asflicense	0m 38s	The patch does not generate ASF License warnings.
		71m 28s

Subsystem	Report/Notes
Docker	ClientAPI=1.40 ServerAPI=1.40 base: https://builds.apache.org/job/hadoop-multibranch/job/PR-2151/1/artifact/out/Dockerfile
GITHUB PR	#2151
Optional Tests	dupname asflicense compile cc mvnsite javac unit golang
uname	Linux f0eb833aec8f 4.15.0-101-generic #102-Ubuntu SMP Mon May 11 10:07:26 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
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Personality	personality/hadoop.sh
git revision	trunk / 9965516
Default Java	Private Build-1.8.0_252-8u252-b09-1~18.04-b09
Multi-JDK versions	/usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.7+10-post-Ubuntu-2ubuntu218.04 /usr/lib/jvm/java-8-openjdk-amd64:Private Build-1.8.0_252-8u252-b09-1~18.04-b09
compile	https://builds.apache.org/job/hadoop-multibranch/job/PR-2151/1/artifact/out/patch-compile-hadoop-hdfs-project_hadoop-hdfs-native-client-jdkUbuntu-11.0.7+10-post-Ubuntu-2ubuntu218.04.txt
cc	https://builds.apache.org/job/hadoop-multibranch/job/PR-2151/1/artifact/out/patch-compile-hadoop-hdfs-project_hadoop-hdfs-native-client-jdkUbuntu-11.0.7+10-post-Ubuntu-2ubuntu218.04.txt
golang	https://builds.apache.org/job/hadoop-multibranch/job/PR-2151/1/artifact/out/patch-compile-hadoop-hdfs-project_hadoop-hdfs-native-client-jdkUbuntu-11.0.7+10-post-Ubuntu-2ubuntu218.04.txt
javac	https://builds.apache.org/job/hadoop-multibranch/job/PR-2151/1/artifact/out/patch-compile-hadoop-hdfs-project_hadoop-hdfs-native-client-jdkUbuntu-11.0.7+10-post-Ubuntu-2ubuntu218.04.txt
compile	https://builds.apache.org/job/hadoop-multibranch/job/PR-2151/1/artifact/out/patch-compile-hadoop-hdfs-project_hadoop-hdfs-native-client-jdkPrivateBuild-1.8.0_252-8u252-b09-1~18.04-b09.txt
cc	https://builds.apache.org/job/hadoop-multibranch/job/PR-2151/1/artifact/out/patch-compile-hadoop-hdfs-project_hadoop-hdfs-native-client-jdkPrivateBuild-1.8.0_252-8u252-b09-1~18.04-b09.txt
golang	https://builds.apache.org/job/hadoop-multibranch/job/PR-2151/1/artifact/out/patch-compile-hadoop-hdfs-project_hadoop-hdfs-native-client-jdkPrivateBuild-1.8.0_252-8u252-b09-1~18.04-b09.txt
javac	https://builds.apache.org/job/hadoop-multibranch/job/PR-2151/1/artifact/out/patch-compile-hadoop-hdfs-project_hadoop-hdfs-native-client-jdkPrivateBuild-1.8.0_252-8u252-b09-1~18.04-b09.txt
unit	https://builds.apache.org/job/hadoop-multibranch/job/PR-2151/1/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs-native-client.txt
Test Results	https://builds.apache.org/job/hadoop-multibranch/job/PR-2151/1/testReport/
Max. process+thread count	334 (vs. ulimit of 5500)
modules	C: hadoop-hdfs-project/hadoop-hdfs-native-client U: hadoop-hdfs-project/hadoop-hdfs-native-client
Console output	https://builds.apache.org/job/hadoop-multibranch/job/PR-2151/1/console
versions	git=2.17.1 maven=3.6.0
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[hadoop-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	1m 14s	Docker mode activated.
		_ Prechecks _
+1 💚	dupname	0m 0s	No case conflicting files found.
+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.
		_ trunk Compile Tests _
+1 💚	mvninstall	25m 25s	trunk passed
+1 💚	compile	2m 49s	trunk passed with JDK Ubuntu-11.0.7+10-post-Ubuntu-2ubuntu218.04
+1 💚	compile	2m 36s	trunk passed with JDK Private Build-1.8.0_252-8u252-b09-1~18.04-b09
+1 💚	mvnsite	0m 22s	trunk passed
+1 💚	shadedclient	49m 48s	branch has no errors when building and testing our client artifacts.
		_ Patch Compile Tests _
+1 💚	mvninstall	0m 17s	the patch passed
+1 💚	compile	2m 26s	the patch passed with JDK Ubuntu-11.0.7+10-post-Ubuntu-2ubuntu218.04
+1 💚	cc	2m 26s	the patch passed
+1 💚	golang	2m 26s	the patch passed
+1 💚	javac	2m 26s	the patch passed
+1 💚	compile	2m 25s	the patch passed with JDK Private Build-1.8.0_252-8u252-b09-1~18.04-b09
+1 💚	cc	2m 25s	the patch passed
+1 💚	golang	2m 25s	the patch passed
+1 💚	javac	2m 25s	the patch passed
+1 💚	mvnsite	0m 19s	the patch passed
+1 💚	whitespace	0m 0s	The patch has no whitespace issues.
+1 💚	shadedclient	17m 40s	patch has no errors when building and testing our client artifacts.
		_ Other Tests _
+1 💚	unit	9m 16s	hadoop-hdfs-native-client in the patch passed.
+1 💚	asflicense	0m 32s	The patch does not generate ASF License warnings.
		86m 36s

Subsystem	Report/Notes
Docker	ClientAPI=1.40 ServerAPI=1.40 base: https://builds.apache.org/job/hadoop-multibranch/job/PR-2151/2/artifact/out/Dockerfile
GITHUB PR	#2151
Optional Tests	dupname asflicense compile cc mvnsite javac unit golang
uname	Linux b3bff816ec7e 4.15.0-101-generic #102-Ubuntu SMP Mon May 11 10:07:26 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	personality/hadoop.sh
git revision	trunk / 9965516
Default Java	Private Build-1.8.0_252-8u252-b09-1~18.04-b09
Multi-JDK versions	/usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.7+10-post-Ubuntu-2ubuntu218.04 /usr/lib/jvm/java-8-openjdk-amd64:Private Build-1.8.0_252-8u252-b09-1~18.04-b09
Test Results	https://builds.apache.org/job/hadoop-multibranch/job/PR-2151/2/testReport/
Max. process+thread count	335 (vs. ulimit of 5500)
modules	C: hadoop-hdfs-project/hadoop-hdfs-native-client U: hadoop-hdfs-project/hadoop-hdfs-native-client
Console output	https://builds.apache.org/job/hadoop-multibranch/job/PR-2151/2/console
versions	git=2.17.1 maven=3.6.0
Powered by	Apache Yetus 0.12.0 https://yetus.apache.org

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[surendralilhore]

+1

[surendralilhore]

Thanks @surajj-naik for contribution and @GauthamBanasandra for review