Yiran Wu created HADOOP-15335:
---------------------------------
Summary: Support xxxxxxx:xxx/Stacks print lock info and more
useful attribute of thread info
Key: HADOOP-15335
URL: https://issues.apache.org/jira/browse/HADOOP-15335
Project: Hadoop Common
Issue Type: Improvement
Components: common
Affects Versions: 3.0.0
Reporter: Yiran Wu
Print stack information and other info show in WebUI
```
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
```
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