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Posted to yarn-issues@hadoop.apache.org by "Haibo Chen (JIRA)" <ji...@apache.org> on 2018/12/06 00:37:01 UTC
[jira] [Updated] (YARN-9025)
TestFairScheduler#testChildMaxResources is flaky
[ https://issues.apache.org/jira/browse/YARN-9025?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Haibo Chen updated YARN-9025:
-----------------------------
Summary: TestFairScheduler#testChildMaxResources is flaky (was: Make TestFairScheduler#testChildMaxResources more reliable, as it is flaky now)
> TestFairScheduler#testChildMaxResources is flaky
> ------------------------------------------------
>
> Key: YARN-9025
> URL: https://issues.apache.org/jira/browse/YARN-9025
> Project: Hadoop YARN
> Issue Type: Bug
> Affects Versions: 3.3.0
> Reporter: Szilard Nemeth
> Assignee: Szilard Nemeth
> Priority: Major
> Attachments: YARN-9025.001.patch, YARN-9025.002.patch
>
>
> During making the code patch for YARN-8059, I come across a flaky test, see this link: https://builds.apache.org/job/PreCommit-YARN-Build/22412/artifact/out/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager.txt
> This is the error message:
> {code:java}
> [ERROR] Tests run: 108, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 19.37 s <<< FAILURE! - in org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.TestFairScheduler
> [ERROR] testChildMaxResources(org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.TestFairScheduler) Time elapsed: 0.164 s <<< FAILURE!
> java.lang.AssertionError: App 1 is not running with the correct number of containers expected:<2> but was:<0>
> at org.junit.Assert.fail(Assert.java:88){code}
> So the thing is, even if we had 8 node updates, due to the nature of how we handle the events, it can happen that no container is allocated for the application.
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