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https://issues.apache.org/jira/browse/YARN-7270?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16202858#comment-16202858
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Yufei Gu commented on YARN-7270:
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Uploaded patch v3 since class {{TestResource}} is missing in patch v2.
[~wangda], [~sunilg] and [~templedf], can you review this? Several test cases
failed because of the bug.
> Resource#getVirtualCores() does unsafe casting from long to int.
> ----------------------------------------------------------------
>
> Key: YARN-7270
> URL: https://issues.apache.org/jira/browse/YARN-7270
> Project: Hadoop YARN
> Issue Type: Bug
> Components: resourcemanager
> Affects Versions: 3.1.0
> Reporter: Yufei Gu
> Assignee: Yufei Gu
> Attachments: YARN-7270.001.patch, YARN-7270.002.patch,
> YARN-7270.003.patch
>
>
> Class {{Resource}} has three sub classes(FixedValueResource,
> LightWeightResource, and ResourcePBImpl). Only FixedValueResource handle
> long-to-int casting nicely. The other two didn't. This bug is introduced by
> resource type feature and causes several unit test failures. For example:
> {code}
> Error Message
> expected:<<memory:4096, vCores:4>> but was:<<memory:4096, vCores:-1>>
> Stacktrace
> java.lang.AssertionError: expected:<<memory:4096, vCores:4>> but
> was:<<memory:4096, vCores:-1>>
> at org.junit.Assert.fail(Assert.java:88)
> at org.junit.Assert.failNotEquals(Assert.java:743)
> at org.junit.Assert.assertEquals(Assert.java:118)
> at org.junit.Assert.assertEquals(Assert.java:144)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.TestFSAppAttempt.testHeadroomWithBlackListedNodes(TestFSAppAttempt.java:325)
> {code}
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