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  • How to test delete method
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    • java.lang.AssertionError: expected null, but was:<$Bean,items=((itemName=blockPoolId,,(itemName=createdRollbackImages,,(itemName=finalizeTime,,(itemName=startTime,,contents={blockPoolId=BP-421661364-, createdRollbackImages=true, finalizeTime=0, startTime=1452420366966})> at at org.junit.Assert.failNotNull( at org.junit.Assert.assertNull( at org.junit.Assert.assertNull( at org.apache.hadoop.hdfs.TestRollingUpgrade.checkMxBeanIsNull( at org.apache.hadoop.hdfs.TestRollingUpgrade.testDFSAdminRollingUpgradeCommands(

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