MAPREDUCE-7351 - CleanupJob during handle of SIGTERM signal

[shubhamod]

Currently MR CleanupJob happens when the job is either successful or fail. But during kill, it is not handled. This leaves all the temporary folders under the output path.

JIRA: https://issues.apache.org/jira/browse/MAPREDUCE-7351

During JobKill or Jvm shutdown, this patch deletes the temporary files in hdfs.

Testing done:

1. Killed the running job in map0%reduce0% , map0%reduce100%, it deleted the temporary files with this change.

[hadoop-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	0m 48s		Docker mode activated.
			_ Prechecks _
+1 💚	dupname	0m 0s		No case conflicting files found.
+0 🆗	codespell	0m 0s		codespell was not available.
+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	33m 0s		trunk passed
+1 💚	compile	0m 36s		trunk passed with JDK Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04
+1 💚	compile	0m 30s		trunk passed with JDK Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10
+1 💚	checkstyle	0m 27s		trunk passed
+1 💚	mvnsite	0m 34s		trunk passed
+1 💚	javadoc	0m 29s		trunk passed with JDK Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04
+1 💚	javadoc	0m 25s		trunk passed with JDK Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10
+1 💚	spotbugs	0m 59s		trunk passed
+1 💚	shadedclient	16m 26s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
+1 💚	mvninstall	0m 29s		the patch passed
+1 💚	compile	0m 30s		the patch passed with JDK Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04
+1 💚	javac	0m 30s		the patch passed
+1 💚	compile	0m 24s		the patch passed with JDK Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10
+1 💚	javac	0m 24s		the patch passed
+1 💚	blanks	0m 0s		The patch has no blanks issues.
-0 ⚠️	checkstyle	0m 19s	/results-checkstyle-hadoop-mapreduce-project_hadoop-mapreduce-client_hadoop-mapreduce-client-app.txt	hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app: The patch generated 3 new + 74 unchanged - 0 fixed = 77 total (was 74)
+1 💚	mvnsite	0m 27s		the patch passed
+1 💚	javadoc	0m 21s		the patch passed with JDK Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04
+1 💚	javadoc	0m 19s		the patch passed with JDK Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10
+1 💚	spotbugs	1m 2s		the patch passed
+1 💚	shadedclient	16m 24s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
+1 💚	unit	8m 17s		hadoop-mapreduce-client-app in the patch passed.
+1 💚	asflicense	0m 30s		The patch does not generate ASF License warnings.
		84m 13s

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3176/1/artifact/out/Dockerfile
GITHUB PR	#3176
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell
uname	Linux b0ec4f4161aa 4.15.0-136-generic #140-Ubuntu SMP Thu Jan 28 05:20:47 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/bin/hadoop.sh
git revision	trunk / 852d501
Default Java	Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10
Multi-JDK versions	/usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04 /usr/lib/jvm/java-8-openjdk-amd64:Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10
Test Results	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3176/1/testReport/
Max. process+thread count	596 (vs. ulimit of 5500)
modules	C: hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app U: hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app
Console output	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3176/1/console
versions	git=2.25.1 maven=3.6.3 spotbugs=4.2.2
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[hadoop-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	1m 4s		Docker mode activated.
			_ Prechecks _
+1 💚	dupname	0m 0s		No case conflicting files found.
+0 🆗	codespell	0m 0s		codespell was not available.
+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	39m 7s		trunk passed
+1 💚	compile	0m 44s		trunk passed with JDK Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04
+1 💚	compile	0m 38s		trunk passed with JDK Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10
+1 💚	checkstyle	0m 31s		trunk passed
+1 💚	mvnsite	0m 48s		trunk passed
+1 💚	javadoc	0m 34s		trunk passed with JDK Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04
+1 💚	javadoc	0m 29s		trunk passed with JDK Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10
+1 💚	spotbugs	1m 18s		trunk passed
+1 💚	shadedclient	20m 0s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
+1 💚	mvninstall	0m 37s		the patch passed
+1 💚	compile	0m 37s		the patch passed with JDK Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04
+1 💚	javac	0m 37s		the patch passed
+1 💚	compile	0m 37s		the patch passed with JDK Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10
+1 💚	javac	0m 37s		the patch passed
+1 💚	blanks	0m 1s		The patch has no blanks issues.
-0 ⚠️	checkstyle	0m 27s	/results-checkstyle-hadoop-mapreduce-project_hadoop-mapreduce-client_hadoop-mapreduce-client-app.txt	hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app: The patch generated 1 new + 74 unchanged - 0 fixed = 75 total (was 74)
+1 💚	mvnsite	0m 37s		the patch passed
+1 💚	javadoc	0m 28s		the patch passed with JDK Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04
+1 💚	javadoc	0m 24s		the patch passed with JDK Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10
+1 💚	spotbugs	1m 26s		the patch passed
+1 💚	shadedclient	19m 28s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
+1 💚	unit	9m 30s		hadoop-mapreduce-client-app in the patch passed.
+1 💚	asflicense	0m 34s		The patch does not generate ASF License warnings.
		100m 48s

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3176/2/artifact/out/Dockerfile
GITHUB PR	#3176
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell
uname	Linux ba96586941d1 4.15.0-136-generic #140-Ubuntu SMP Thu Jan 28 05:20:47 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/bin/hadoop.sh
git revision	trunk / 3278a34
Default Java	Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10
Multi-JDK versions	/usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04 /usr/lib/jvm/java-8-openjdk-amd64:Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10
Test Results	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3176/2/testReport/
Max. process+thread count	592 (vs. ulimit of 5500)
modules	C: hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app U: hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app
Console output	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3176/2/console
versions	git=2.25.1 maven=3.6.3 spotbugs=4.2.2
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[PrabhuJoseph]

The patch looks good. Will commit it if no other comments.