Adam Antal created HADOOP-16503:
-----------------------------------
Summary: [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: Adam Antal
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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