YARN-11809. Support application backoff mechanism for CapacityScheduler #7589

TaoYang526 · 2025-04-09T01:47:57Z

Description of PR

Please refer to YARN-11809 for details.

How was this patch tested?

UT

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?

Copilot

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Comments suppressed due to low confidence (1)

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestCapacitySchedulerAppBackoff.java:170

[nitpick] Consider increasing the sleep duration slightly above 100ms to ensure the backoff interval reliably expires, reducing potential flakiness in tests.

Thread.sleep(100L);

hadoop-yetus · 2025-04-09T13:18:29Z

🎊 +1 overall

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		206m 53s

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hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestCapacitySchedulerAppBackoff.java:171

[nitpick] Using Thread.sleep for waiting on the backoff interval might lead to flaky tests under variable system load. Consider using a polling mechanism with a timeout to check for backoff expiration for increased reliability.

Thread.sleep(appBackoffIntervalMs + 10L);

hadoop-yetus · 2025-04-10T06:52:15Z

🎊 +1 overall

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		204m 4s

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hadoop-yetus · 2025-04-10T07:24:09Z

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		236m 44s

Reason	Tests
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...java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/AbstractLeafQueue.java

hadoop-yetus · 2025-04-14T05:56:53Z

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hadoop-yetus · 2025-04-29T03:52:59Z

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		202m 2s

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TaoYang526 force-pushed the app-backoff-mechanism branch from 64260fd to 322fe34 Compare April 9, 2025 08:05

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TaoYang526 force-pushed the app-backoff-mechanism branch 2 times, most recently from 1fbb000 to ff85582 Compare April 9, 2025 09:50

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TaoYang526 force-pushed the app-backoff-mechanism branch 2 times, most recently from f3068f4 to 79f2503 Compare April 10, 2025 03:27

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...java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/AbstractLeafQueue.java Outdated Show resolved Hide resolved

YARN-11809. Support application backoff mechanism for CapacityScheduler.

d82c488

TaoYang526 force-pushed the app-backoff-mechanism branch from 79f5f77 to d82c488 Compare April 29, 2025 00:29

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YARN-11809. Support application backoff mechanism for CapacityScheduler #7589

YARN-11809. Support application backoff mechanism for CapacityScheduler #7589

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YARN-11809. Support application backoff mechanism for CapacityScheduler #7589

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YARN-11809. Support application backoff mechanism for CapacityScheduler #7589

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TaoYang526 commented Apr 9, 2025

Description of PR

How was this patch tested?

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