TEZ-4725: Fix flaky tests in TestAMRecoveryAggregationBroadcast

[maheshrajus]

Root causes and fixes:

1. TestAMRecoveryAggregationBroadcast.testMapJoinTemporalFailure (race condition)
   Replace fixed Thread.sleep(10s) before AM kill with a deterministic
   waitForVertexSucceeded() helper that polls DAGClient.getVertexStatus()
   every 500ms (up to 60s) until the target vertices reach SUCCEEDED state.
   Each test now waits for only the vertices it logically depends on before
   killing the AM, ensuring the recovery log assertions always see the
   expected counts.
   Make OUT_PATH unique per test run (random suffix) to eliminate cross-test.

2. DAGClientRPCImpl / TezClientUtils: port out of range:-1 (YARN-808 gap)
   YARN sets rpcPort=-1 when an AM container is allocated (state=RUNNING)
   but the AM has not yet bound its RPC listener. The existing guard only
   checked rpcPort==0 (protobuf default), so rpcPort==-1 reached
   NetUtils.createSocketAddrForHost(), which threw
   IllegalArgumentException: port out of range:-1.
   Fix DAGClientRPCImpl.createAMProxyIfNeeded(): rpcPort == 0 → rpcPort <= 0.
   Fix TezClientUtils.getAMProxy(FrameworkClient,...): add the same
   rpcPort <= 0 guard

[tez-yetus]

🎊 +1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	4m 11s		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 3 new or modified test files.
			_ master Compile Tests _
+0 🆗	mvndep	0m 35s		Maven dependency ordering for branch
+1 💚	mvninstall	4m 33s		master passed
+1 💚	compile	3m 59s		master passed
+1 💚	checkstyle	1m 4s		master passed
+1 💚	javadoc	1m 11s		master passed
+0 🆗	spotbugs	1m 23s		tez-api in master has 92 extant spotbugs warnings.
+0 🆗	spotbugs	0m 53s		tez-tests in master has 6 extant spotbugs warnings.
			_ Patch Compile Tests _
+0 🆗	mvndep	0m 9s		Maven dependency ordering for patch
+1 💚	mvninstall	3m 51s		the patch passed
+1 💚	codespell	1m 37s		No new issues.
+1 💚	compile	4m 5s		the patch passed
+1 💚	javac	4m 5s		the patch passed
+1 💚	blanks	0m 0s		The patch has no blanks issues.
-0 ⚠️	checkstyle	0m 30s	/results-checkstyle-tez-api.txt	tez-api: The patch generated 2 new + 62 unchanged - 0 fixed = 64 total (was 62)
+1 💚	javadoc	1m 10s		the patch passed
+1 💚	spotbugs	2m 33s		the patch passed
			_ Other Tests _
+1 💚	unit	75m 58s		root in the patch passed.
+1 💚	asflicense	1m 0s		The patch does not generate ASF License warnings.
		111m 9s

Subsystem	Report/Notes
Docker	ClientAPI=1.55 ServerAPI=1.55 base: https://ci-hadoop.apache.org/job/tez-multibranch/job/PR-520/1/artifact/out/Dockerfile
Optional Tests	dupname compile unit asflicense javac javadoc spotbugs checkstyle codespell detsecrets
uname	Linux c15aef73b5a9 5.15.0-181-generic #191-Ubuntu SMP Fri May 22 19:09:02 UTC 2026 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	tez-personality.sh
git revision	master / 4bccf3a
Default Java	Eclipse Adoptium-21.0.11+10-LTS
Test Results	https://ci-hadoop.apache.org/job/tez-multibranch/job/PR-520/1/testReport/
Max. process+thread count	1525 (vs. ulimit of 5500)
modules	C: tez-api tez-tests U: .
Console output	https://ci-hadoop.apache.org/job/tez-multibranch/job/PR-520/1/console
versions	git=2.43.0 maven=3.9.15 spotbugs=4.9.3 codespell=2.4.1
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