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From "Robert Kanter (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-7146) Many RM unit tests failing with FairScheduler
Date Fri, 01 Sep 2017 01:17:00 GMT
Robert Kanter created YARN-7146:
-----------------------------------

             Summary: Many RM unit tests failing with FairScheduler
                 Key: YARN-7146
                 URL: https://issues.apache.org/jira/browse/YARN-7146
             Project: Hadoop YARN
          Issue Type: Bug
          Components: test
    Affects Versions: 3.0.0-beta1
            Reporter: Robert Kanter
            Assignee: Robert Kanter


Many of the RM unit tests are failing when using the FairScheduler.  

Here is a list of affected test classes:
{noformat}
TestYarnClient
TestApplicationCleanup
TestApplicationMasterLauncher
TestDecommissioningNodesWatcher
TestKillApplicationWithRMHA
TestNodeBlacklistingOnAMFailures
TestRM
TestRMAdminService
TestRMRestart
TestResourceTrackerService
TestWorkPreservingRMRestart
TestAMRMRPCNodeUpdates
TestAMRMRPCResponseId
TestAMRestart
TestApplicationLifetimeMonitor
TestNodesListManager
TestRMContainerImpl
TestAbstractYarnScheduler
TestSchedulerUtils
TestFairOrderingPolicy
TestAMRMTokens
TestDelegationTokenRenewer
{noformat}
Most of the test methods in these classes are failing, though some do succeed.


There's two main categories of issues:
# The test submits an application to the {{MockRM}} and waits for it to enter a specific state,
which it never does, and the test times out.  We need to call {{update()}} on the scheduler.
# The test throws a {{ClassCastException}} on {{FSQueueMetrics}} to {{CSQueueMetrics}}.  This
is because {{QueueMetrics}} metrics are static, and a previous test using FairScheduler initialized
it, and the current test is using CapacityScheduler.  We need to reset the metrics.



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