TEZ-4723: TestMapProcessor is flaky

[abstractdog]

No description provided.

[ayushtkn]

This will not fix it I believe, it will increase the probability of it passing I believe. Can we wait in the Test's monitoring thread for some X condition instead? Like maybe using GenericTestUtils.waitFor()

[abstractdog]

agreed, the current solution is just a sophisticated Thread.sleep :) let me improve it

[tez-yetus]

🎊 +1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	5m 38s		Docker mode activated.
			_ Prechecks _
+1 💚	dupname	0m 0s		No case conflicting files found.
+0 🆗	detsecrets	0m 1s		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.
			_ master Compile Tests _
+1 💚	mvninstall	3m 12s		master passed
+1 💚	compile	2m 25s		master passed
+1 💚	checkstyle	0m 20s		master passed
+1 💚	javadoc	0m 22s		master passed
+0 🆗	spotbugs	0m 35s		tez-mapreduce in master has 97 extant spotbugs warnings.
			_ Patch Compile Tests _
+1 💚	mvninstall	2m 8s		the patch passed
+1 💚	codespell	0m 53s		No new issues.
+1 💚	compile	2m 24s		the patch passed
+1 💚	javac	2m 24s		the patch passed
+1 💚	blanks	0m 0s		The patch has no blanks issues.
+1 💚	checkstyle	0m 14s		the patch passed
+1 💚	javadoc	0m 18s		the patch passed
+1 💚	spotbugs	0m 39s		the patch passed
			_ Other Tests _
+1 💚	unit	58m 27s		root in the patch passed.
+1 💚	asflicense	0m 20s		The patch does not generate ASF License warnings.
		78m 56s

Subsystem	Report/Notes
Docker	ClientAPI=1.54 ServerAPI=1.54 base: https://ci-hadoop.apache.org/job/tez-multibranch/job/PR-504/1/artifact/out/Dockerfile
Optional Tests	dupname compile unit asflicense javac javadoc spotbugs checkstyle codespell detsecrets
uname	Linux 0518a0fadd0b 5.15.0-173-generic #183-Ubuntu SMP Fri Mar 6 13:29:34 UTC 2026 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	tez-personality.sh
git revision	master / 330fdc8
Default Java	Eclipse Adoptium-21.0.11+10-LTS
Test Results	https://ci-hadoop.apache.org/job/tez-multibranch/job/PR-504/1/testReport/
Max. process+thread count	1344 (vs. ulimit of 5500)
modules	C: tez-mapreduce U: tez-mapreduce
Console output	https://ci-hadoop.apache.org/job/tez-multibranch/job/PR-504/1/console
versions	git=2.43.0 maven=3.9.15 spotbugs=4.9.3 codespell=2.4.1
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[abstractdog]

@ayushtkn : created LatchMapper, please let me know if it's fine

[tez-yetus]

🎊 +1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	2m 20s		Docker mode activated.
			_ Prechecks _
+1 💚	dupname	0m 0s		No case conflicting files found.
+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.
			_ master Compile Tests _
+1 💚	mvninstall	3m 3s		master passed
+1 💚	compile	2m 27s		master passed
+1 💚	checkstyle	0m 23s		master passed
+1 💚	javadoc	0m 24s		master passed
+0 🆗	spotbugs	0m 35s		tez-mapreduce in master has 97 extant spotbugs warnings.
			_ Patch Compile Tests _
+1 💚	mvninstall	2m 11s		the patch passed
+1 💚	codespell	0m 48s		No new issues.
+1 💚	compile	2m 31s		the patch passed
+1 💚	javac	2m 31s		the patch passed
+1 💚	blanks	0m 0s		The patch has no blanks issues.
+1 💚	checkstyle	0m 18s		tez-mapreduce: The patch generated 0 new + 2 unchanged - 2 fixed = 2 total (was 4)
+1 💚	javadoc	0m 22s		the patch passed
+1 💚	spotbugs	0m 43s		the patch passed
			_ Other Tests _
+1 💚	unit	58m 48s		root in the patch passed.
+1 💚	asflicense	0m 21s		The patch does not generate ASF License warnings.
		76m 17s

Subsystem	Report/Notes
Docker	ClientAPI=1.54 ServerAPI=1.54 base: https://ci-hadoop.apache.org/job/tez-multibranch/job/PR-504/5/artifact/out/Dockerfile
Optional Tests	dupname compile unit asflicense javac javadoc spotbugs checkstyle codespell detsecrets
uname	Linux 15ea1b7fa1d1 5.15.0-173-generic #183-Ubuntu SMP Fri Mar 6 13:29:34 UTC 2026 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	tez-personality.sh
git revision	master / 330fdc8
Default Java	Eclipse Adoptium-21.0.11+10-LTS
Test Results	https://ci-hadoop.apache.org/job/tez-multibranch/job/PR-504/5/testReport/
Max. process+thread count	2127 (vs. ulimit of 5500)
modules	C: tez-mapreduce U: tez-mapreduce
Console output	https://ci-hadoop.apache.org/job/tez-multibranch/job/PR-504/5/console
versions	git=2.43.0 maven=3.9.15 spotbugs=4.9.3 codespell=2.4.1
Powered by	Apache Yetus 0.15.1 https://yetus.apache.org

This message was automatically generated.