You are viewing a plain text version of this content. The canonical link for it is here.
Posted to user@hadoop.apache.org by lei liu <li...@gmail.com> on 2013/10/12 09:54:52 UTC
./bin/hdfs haadmin -transitionToActive deadlock
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"