[HDFS-16336] De-flake TestRollingUpgrade#testRollback

• Type: Sub-task
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.4.0
• Fix Version/s: 3.4.0, 3.3.2, 3.2.4
• Component/s: hdfs, test
• Labels: pull-request-available
• Target Version/s: 3.4.0, 3.2.3, 3.3.5
• Hadoop Flags: Reviewed
• Assignee: Viraj Jasani
• Reporter: Kevin Wikant
• Created: 18/Nov/21 15:08
• Updated: 27/Jan/24 01:31
• Resolved: 24/Nov/21 13:57

Description

This pull request: https://github.com/apache/hadoop/pull/3675

Failed Jenkins pre-commit job due to an unrelated unit test failure: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3675/1/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt

[ERROR] Failures: 
[ERROR] org.apache.hadoop.hdfs.TestRollingUpgrade.testRollback(org.apache.hadoop.hdfs.TestRollingUpgrade)
[ERROR]   Run 1: TestRollingUpgrade.testRollback:328->checkMxBeanIsNull:299 expected null, but was:<javax.management.openmbean.CompositeDataSupport(compositeType=javax.management.openmbean.CompositeType(name=org.apache.hadoop.hdfs.protocol.RollingUpgradeInfo$Bean,items=((itemName=blockPoolId,itemType=javax.management.openmbean.SimpleType(name=java.lang.String)),(itemName=createdRollbackImages,itemType=javax.management.openmbean.SimpleType(name=java.lang.Boolean)),(itemName=finalizeTime,itemType=javax.management.openmbean.SimpleType(name=java.lang.Long)),(itemName=startTime,itemType=javax.management.openmbean.SimpleType(name=java.lang.Long)))),contents={blockPoolId=BP-1039609189-172.17.0.2-1637204447583, createdRollbackImages=true, finalizeTime=0, startTime=1637204448659})>
[ERROR]   Run 2: TestRollingUpgrade.testRollback:328->checkMxBeanIsNull:299 expected null, but was:<javax.management.openmbean.CompositeDataSupport(compositeType=javax.management.openmbean.CompositeType(name=org.apache.hadoop.hdfs.protocol.RollingUpgradeInfo$Bean,items=((itemName=blockPoolId,itemType=javax.management.openmbean.SimpleType(name=java.lang.String)),(itemName=createdRollbackImages,itemType=javax.management.openmbean.SimpleType(name=java.lang.Boolean)),(itemName=finalizeTime,itemType=javax.management.openmbean.SimpleType(name=java.lang.Long)),(itemName=startTime,itemType=javax.management.openmbean.SimpleType(name=java.lang.Long)))),contents={blockPoolId=BP-1039609189-172.17.0.2-1637204447583, createdRollbackImages=true, finalizeTime=0, startTime=1637204448659})>
[ERROR]   Run 3: TestRollingUpgrade.testRollback:328->checkMxBeanIsNull:299 expected null, but was:<javax.management.openmbean.CompositeDataSupport(compositeType=javax.management.openmbean.CompositeType(name=org.apache.hadoop.hdfs.protocol.RollingUpgradeInfo$Bean,items=((itemName=blockPoolId,itemType=javax.management.openmbean.SimpleType(name=java.lang.String)),(itemName=createdRollbackImages,itemType=javax.management.openmbean.SimpleType(name=java.lang.Boolean)),(itemName=finalizeTime,itemType=javax.management.openmbean.SimpleType(name=java.lang.Long)),(itemName=startTime,itemType=javax.management.openmbean.SimpleType(name=java.lang.Long)))),contents={blockPoolId=BP-1039609189-172.17.0.2-1637204447583, createdRollbackImages=true, finalizeTime=0, startTime=1637204448659})> 

Seems that perhaps "TestRollingUpgrade.testRollback" is a flaky unit test

Issue Links

• depends upon: HDFS-16171 De-flake testDecommissionStatus
• is related to: HDFS-17224 TestRollingUpgrade.testDFSAdminRollingUpgradeCommands failing intermittently
• links to: GitHub Pull Request #3686