Anubhav Dhoot created YARN-2109: ----------------------------------- Summary: TestRM fails some tests when some tests run with CapacityScheduler and some with FairScheduler Key: YARN-2109 URL: https://issues.apache.org/jira/browse/YARN-2109 Project: Hadoop YARN Issue Type: Bug Components: scheduler Reporter: Anubhav Dhoot
testNMTokenSentForNormalContainer requires CapacityScheduler and was fixed in [YARN-1846|https://issues.apache.org/jira/browse/YARN-1846] to explicitly set it to be CapacityScheduler. But if the default scheduler is set to FairScheduler then the rest of the tests that execute after this will fail with invalid cast exceptions when getting queuemetrics. This is based on test execution order as only the tests that execute after this test will fail. This is because the queuemetrics will be initialized by this test to QueueMetrics and shared by the subsequent tests. We can explicitly clear the metrics at the end of this test to fix this. For example java.lang.ClassCastException: org.apache.hadoop.yarn.server.resourcemanager.scheduler.QueueMetrics cannot be cast to org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSQueueMetrics at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSQueueMetrics.forQueue(FSQueueMetrics.java:103) at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.reinitialize(FairScheduler.java:1275) at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$RMActiveServices.serviceInit(ResourceManager.java:418) at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163) at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.createAndInitActiveServices(ResourceManager.java:808) at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.serviceInit(ResourceManager.java:230) at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163) at org.apache.hadoop.yarn.server.resourcemanager.MockRM.<init>(MockRM.java:90) at org.apache.hadoop.yarn.server.resourcemanager.MockRM.<init>(MockRM.java:85) at org.apache.hadoop.yarn.server.resourcemanager.MockRM.<init>(MockRM.java:81) at org.apache.hadoop.yarn.server.resourcemanager.TestRM.testNMToken(TestRM.java:232) -- This message was sent by Atlassian JIRA (v6.2#6252)