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https://issues.apache.org/jira/browse/HDFS-11818?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16450729#comment-16450729
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Hudson commented on HDFS-11818:
-------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #14057 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/14057/])
HDFS-11818. TestBlockManager.testSufficientlyReplBlocksUsesNewRack fails (xyao:
rev 0fe0687c3e5bd456d2c09e9532eaf3a5617f720c)
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/blockmanagement/TestBlockManager.java
> TestBlockManager.testSufficientlyReplBlocksUsesNewRack fails intermittently
> ---------------------------------------------------------------------------
>
> Key: HDFS-11818
> URL: https://issues.apache.org/jira/browse/HDFS-11818
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 3.0.0-alpha2, 2.8.2
> Reporter: Eric Badger
> Assignee: Nathan Roberts
> Priority: Major
> Fix For: 2.9.0, 3.0.0-alpha4, 2.8.2
>
> Attachments: HDFS-11818-branch-2.patch, HDFS-11818.patch
>
>
> Saw a weird Mockito failure in last night's build with the following stack
> trace:
> {noformat}
> org.mockito.exceptions.misusing.WrongTypeOfReturnValue:
> INodeFile cannot be returned by isRunning()
> isRunning() should return boolean
> at
> org.apache.hadoop.hdfs.server.blockmanagement.TestBlockManager.addBlockOnNodes(TestBlockManager.java:555)
> at
> org.apache.hadoop.hdfs.server.blockmanagement.TestBlockManager.doTestSufficientlyReplBlocksUsesNewRack(TestBlockManager.java:404)
> at
> org.apache.hadoop.hdfs.server.blockmanagement.TestBlockManager.testSufficientlyReplBlocksUsesNewRack(TestBlockManager.java:397)
> {noformat}
> This is pretty confusing since we explicitly set isRunning() to return true
> in TestBlockManager's \@Before method
> {noformat}
> 154 Mockito.doReturn(true).when(fsn).isRunning();
> {noformat}
> Also saw the following exception in the logs:
> {noformat}
> 2017-05-12 05:42:27,903 ERROR blockmanagement.BlockManager
> (BlockManager.java:run(2796)) - Error while processing replication queues
> async
> org.mockito.exceptions.base.MockitoException:
> 'writeLockInterruptibly' is a *void method* and it *cannot* be stubbed with a
> *return value*!
> Voids are usually stubbed with Throwables:
> doThrow(exception).when(mock).someVoidMethod();
> If the method you are trying to stub is *overloaded* then make sure you are
> calling the right overloaded version.
> at
> org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.processMisReplicatesAsync(BlockManager.java:2841)
> at
> org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.access$100(BlockManager.java:120)
> at
> org.apache.hadoop.hdfs.server.blockmanagement.BlockManager$1.run(BlockManager.java:2792)
> {noformat}
> This is also weird since we don't do any explicit mocking with
> {{writeLockInterruptibly}} via fsn in the test. It has to be something
> changing the mocks or non-thread safe access or something like that. I can't
> explain the failures otherwise.
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