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https://issues.apache.org/jira/browse/YARN-9470?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16817542#comment-16817542
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Steve Loughran commented on YARN-9470:
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AssertJ is already on the classpath for hdfs-test; no reason not to use it in
YARN
> Fix order of actual and expected expression in assert statements
> ----------------------------------------------------------------
>
> Key: YARN-9470
> URL: https://issues.apache.org/jira/browse/YARN-9470
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: yarn
> Affects Versions: 3.2.0
> Reporter: Prabhu Joseph
> Assignee: Prabhu Joseph
> Priority: Major
> Attachments: YARN-9470-001.patch, assertEquals
>
>
> Fix order of actual and expected expression in assert statements which gives
> misleading message when test case fails. Attached file has some of the places
> where it is placed wrongly.
> {code}
> [ERROR]
> testNodeRemovalGracefully(org.apache.hadoop.yarn.server.resourcemanager.TestResourceTrackerService)
> Time elapsed: 3.385 s <<< FAILURE!
> java.lang.AssertionError: Shutdown nodes should be 0 now expected:<1> but
> was:<0>
> {code}
> For long term, [AssertJ|http://joel-costigliola.github.io/assertj/] can be
> used for new test cases which avoids such mistakes.
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