I use CDH4.3.1, When I start NameNode,and transition one NameNode to active, there is below deadlock:
Found one Java-level deadlock: ============================= "22558696@qtp-1616586953-6": waiting to lock monitor 0x00002aaab3621f40 (object 0x00000000f7646958, a org.apache.hadoop.hdfs.server.namenode.NameNode), which is held by "IPC Server handler 1 on 20020" "IPC Server handler 1 on 20020": waiting to lock monitor 0x00002aaab9052ab8 (object 0x00000000f747f1b8, a org.apache.hadoop.metrics2.impl.MetricsSystemImpl), which is held by "Timer for 'NameNode' metrics system" "Timer for 'NameNode' metrics system": waiting for ownable synchronizer 0x00000000f764a858, (a java.util.concurrent.locks.ReentrantReadWriteLock$FairSync), which is held by "IPC Server handler 1 on 20020"