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From "Kinga Marton (Jira)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-16503) [JDK11] TestLeafQueue tests are failing due to WrongTypeOfReturnValue
Date Tue, 01 Oct 2019 13:12:00 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-16503?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kinga Marton updated HADOOP-16503:
----------------------------------
    Resolution: Not A Problem
        Status: Resolved  (was: Patch Available)

> [JDK11] TestLeafQueue tests are failing due to WrongTypeOfReturnValue
> ---------------------------------------------------------------------
>
>                 Key: HADOOP-16503
>                 URL: https://issues.apache.org/jira/browse/HADOOP-16503
>             Project: Hadoop Common
>          Issue Type: Sub-task
>    Affects Versions: 3.2.0
>            Reporter: Adam Antal
>            Assignee: Kinga Marton
>            Priority: Major
>         Attachments: HADOOP-16503.001.patch, HADOOP-16503.002.patch, HADOOP-16503.003.patch
>
>
> Many of the tests in {{org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.TestLeafQueue}}
fails with the following error message running on JDK11:
> {noformat}
> [ERROR] testSingleQueueWithOneUser(org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.TestLeafQueue)
 Time elapsed: 0.204 s  <<< ERROR!
> org.mockito.exceptions.misusing.WrongTypeOfReturnValue:
> YarnConfiguration cannot be returned by getRMNodes()
> getRMNodes() should return ConcurrentMap
> ***
> If you're unsure why you're getting above error read on.
> Due to the nature of the syntax above problem might occur because:
> 1. This exception *might* occur in wrongly written multi-threaded tests.
>    Please refer to Mockito FAQ on limitations of concurrency testing.
> 2. A spy is stubbed using when(spy.foo()).then() syntax. It is safer to stub spies -
>    - with doReturn|Throw() family of methods. More in javadocs for Mockito.spy() method.
> 	at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.TestLeafQueue.setUpInternal(TestLeafQueue.java:221)
> 	at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.TestLeafQueue.setUp(TestLeafQueue.java:144)
>        ...
> {noformat}
> This is due to the actual execution of the call, while we need to record only the invocation
of it. According to the javadocs and other folks.



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