Details
-
Improvement
-
Status: Patch Available
-
Major
-
Resolution: Unresolved
-
3.0.0
-
None
-
None
Description
Print stack information and other info show in WebUI
http://namenode:50070/stacks?contentionTracing=true
Thread 2 (Reference Handler): State: WAITING Blocked count: 8 Waited count: 5 Thread CpuTime: 5910000 Thread UserTime: 5754000 Thread allocatedBytes: 0 Waiting on java.lang.ref.Reference$Lock@4b3ed2f0 Blocked by -1 Stack: java.lang.Object.wait(Native Method) java.lang.Object.wait(Object.java:502) java.lang.ref.Reference.tryHandlePending(Reference.java:191) java.lang.ref.Reference$ReferenceHandler.run(Reference.java:153) Thread 1 (main): State: WAITING Blocked count: 4 Waited count: 2 Thread CpuTime: 2563937000 Thread UserTime: 2222977000 Thread allocatedBytes: 229115520 Waiting on org.apache.hadoop.ipc.ProtobufRpcEngine$Server@442a2e48 Blocked by -1 Stack: java.lang.Object.wait(Native Method) java.lang.Object.wait(Object.java:502) org.apache.hadoop.ipc.Server.join(Server.java:2498) org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.join(NameNodeRpcServer.java:442) org.apache.hadoop.hdfs.server.namenode.NameNode.join(NameNode.java:865) org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1573) --------------------------------------------------------- Locks info: --------------------------------------------------------- java.util.concurrent.locks.ReentrantReadWriteLock$FairSync@cd6c71a lockedBy Thread 43 (IPC Server handler 7 on 8020) Waiting thread num: 6 Stack: org.apache.hadoop.hdfs.server.namenode.FSNamesystem.renameTo(FSNamesystem.java:3665) org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.rename(NameNodeRpcServer.java:868) org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.rename(ClientNamenodeProtocolServerSideTranslatorPB.java:583) org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java) org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:616) org.apache.hadoop.ipc.RPC$Server.call(RPC.java:969) org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2076) org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2072) java.security.AccessController.doPrivileged(Native Method) javax.security.auth.Subject.doAs(Subject.java:422) org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1803) org.apache.hadoop.ipc.Server$Handler.run(Server.java:2072) java.lang.ref.ReferenceQueue$Lock@31bcf236 lockedBy UNKNOW java.lang.ref.Reference$Lock@4b3ed2f0 lockedBy UNKNOW org.apache.hadoop.ipc.ProtobufRpcEngine$Server@442a2e48 lockedBy UNKNOW