Robert Kanter created YARN-7146:
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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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