Thanks Devraj,
I am using Hadoop-0.20.2 version. In the starting days, cluster is
working properly. I am able to see all the web UI through web browser,
But Suddenly one day this problem arises.
How to compiled jsp files into my classpath.
Thanks
Devaraj K wrote:
Hi Adarsh,
Which version of hadoop are you using?
If you are using 0.21 and later versions, need to set the environment
variables HADOOP_COMMON_HOME, HADOOP_HDFS_HOME, HADOOP_MAPREDUCE_HOME
correctly. Otherwise this problem comes.
If you are using 0.20.* version, this problem comes when the compiled jsp
files are not coming into the java classpath.
Devaraj K
-----Original Message-----
From: Adarsh Sharma [mailto:[email protected]]
Sent: Thursday, July 14, 2011 6:32 PM
To: [email protected]
Subject: Re: HTTP Error
Any update on the HTTP Error : Still the issue remains but Hadoop is
functioning properly.
Thanks
Adarsh Sharma wrote:
Thanks Joey I solved the problem of Safe mode by manually deleting
some files ,
bin/hadoop dfsadmin -report , shows the all 2 nodes and safe mode
gets OFF after some time. But,
but I have no guess to solve the below error :
WHy my web UI shows :
HTTP ERROR: 404
/dfshealth.jsp
RequestURI=/dfshealth.jsp
/Powered by Jetty:// <http://jetty.mortbay.org/>
/
Any views on it. Please help
Thanks
Joey Echeverria wrote:
It looks like both datanodes are trying to serve data out of the smae
directory. Is there any chance that both datanodes are using the same
NFS mount for the dfs.data.dir?
If not, what I would do is delete the data from ${dfs.data.dir} and
then re-format the namenode. You'll lose all of your data, hopefully
that's not a problem at this time.
-Joey
On Jul 8, 2011, at 0:40, Adarsh Sharma <[email protected]> wrote:
Thanks , Still don't understand the issue.
My name node has repeatedly show these logs :
2011-07-08 09:36:31,365 INFO
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.audit:
ugi=hadoop,hadoop ip=/MAster-IP cmd=listStatus
src=/home/hadoop/system dst=null perm=null
2011-07-08 09:36:31,367 INFO org.apache.hadoop.ipc.Server: IPC
Server handler 2 on 9000, call delete(/home/hadoop/system, true)
from Master-IP:53593: error:
org.apache.hadoop.hdfs.server.namenode.SafeModeException: Cannot
delete /home/hadoop/system. Name node is in safe mode.
The ratio of reported blocks 0.8293 has not reached the threshold
0.9990. Safe mode will be turned off automatically.
org.apache.hadoop.hdfs.server.namenode.SafeModeException: Cannot
delete /home/hadoop/system. Name node is in safe mode.
The ratio of reported blocks 0.8293 has not reached the threshold
0.9990. Safe mode will be turned off automatically.
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.deleteInternal(FSNamesys
tem.java:1700)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.delete(FSNamesystem.java
:1680)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.delete(NameNode.java:517)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39
)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl
.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:508)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:959)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:955)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:396)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:953)
And one of my data node shows the below logs :
2011-07-08 09:49:56,967 INFO
org.apache.hadoop.hdfs.server.datanode.DataNode: DatanodeCommand
action: DNA_REGISTER
2011-07-08 09:49:59,962 WARN
org.apache.hadoop.hdfs.server.datanode.DataNode: DataNode is
shutting down: org.apache.hadoop.ipc.RemoteException:
org.apache.hadoop.hdfs.protocol.UnregisteredDatanodeException: Data
node 192.168.0.209:50010 is attempting to report storage ID
DS-218695497-SLave_IP-50010-1303978807280. Node SLave_IP:50010 is
expected to serve this storage.
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getDatanode(FSNamesystem
.java:3920)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.processReport(FSNamesyst
em.java:2891)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.blockReport(NameNode.java:71
5)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39
)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl
.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:508)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:959)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:955)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:396)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:953)
at org.apache.hadoop.ipc.Client.call(Client.java:740)
at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:220)
at $Proxy4.blockReport(Unknown Source)
at
org.apache.hadoop.hdfs.server.datanode.DataNode.offerService(DataNode.java:7
56)
at
org.apache.hadoop.hdfs.server.datanode.DataNode.run(DataNode.java:1186)
at java.lang.Thread.run(Thread.java:619)
2011-07-08 09:50:00,072 INFO org.apache.hadoop.ipc.Server: Stopping
server on 50020
2011-07-08 09:50:00,072 INFO org.apache.hadoop.ipc.Server: IPC
Server handler 1 on 50020: exiting
2011-07-08 09:50:00,074 INFO org.apache.hadoop.ipc.Server: IPC
Server handler 2 on 50020: exiting
2011-07-08 09:50:00,074 INFO org.apache.hadoop.ipc.Server: IPC
Server handler 0 on 50020: exiting
2011-07-08 09:50:00,076 INFO org.apache.hadoop.ipc.Server: Stopping
IPC Server listener on 50020
2011-07-08 09:50:00,077 INFO org.apache.hadoop.ipc.Server: Stopping
IPC Server Responder
2011-07-08 09:50:00,077 INFO
org.apache.hadoop.hdfs.server.datanode.DataNode: Waiting for
threadgroup to exit, active threads is 1
2011-07-08 09:50:00,078 WARN
org.apache.hadoop.hdfs.server.datanode.DataNode:
DatanodeRegistration(SLave_IP:50010,
storageID=DS-218695497-192.168.0.209-50010-1303978807280,
infoPort=50075, ipcPort=50020):DataXceiveServer:
java.nio.channels.AsynchronousCloseException
at
java.nio.channels.spi.AbstractInterruptibleChannel.end(AbstractInterruptible
Channel.java:185)
at
sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:152)
at
sun.nio.ch.ServerSocketAdaptor.accept(ServerSocketAdaptor.java:84)
at
org.apache.hadoop.hdfs.server.datanode.DataXceiverServer.run(DataXceiverServ
er.java:130)
at java.lang.Thread.run(Thread.java:619)
2011-07-08 09:50:00,394 INFO
org.apache.hadoop.hdfs.server.datanode.DataBlockScanner: Exiting
DataBlockScanner thread.
2011-07-08 09:50:01,079 INFO
org.apache.hadoop.hdfs.server.datanode.DataNode: Waiting for
threadgroup to exit, active threads is 0
2011-07-08 09:50:01,183 INFO
org.apache.hadoop.hdfs.server.datanode.DataNode:
DatanodeRegistration(192.168.0.209:50010,
storageID=DS-218695497-192.168.0.209-50010-1303978807280,
infoPort=50075, ipcPort=50020):Finishing DataNode in:
FSDataset{dirpath='/hdd1-1/data/current'}
2011-07-08 09:50:01,183 INFO org.apache.hadoop.ipc.Server: Stopping
server on 50020
2011-07-08 09:50:01,183 INFO
org.apache.hadoop.hdfs.server.datanode.DataNode: Waiting for
threadgroup to exit, active threads is 0
2011-07-08 09:50:01,185 INFO
org.apache.hadoop.hdfs.server.datanode.DataNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down DataNode at ws14-suru-lin/
Also my dfsdmin report shows :
bash-3.2$ bin/hadoop dfsadmin -report
Safe mode is ON
Configured Capacity: 59069984768 (55.01 GB)
Present Capacity: 46471880704 (43.28 GB)
DFS Remaining: 45169745920 (42.07 GB)
DFS Used: 1302134784 (1.21 GB)
DFS Used%: 2.8%
Under replicated blocks: 0
Blocks with corrupt replicas: 0
Missing blocks: 0
-------------------------------------------------
Datanodes available: 1 (1 total, 0 dead)
Name: IP:50010
Decommission Status : Normal
Configured Capacity: 59069984768 (55.01 GB)
DFS Used: 1302134784 (1.21 GB)
Non DFS Used: 12598104064 (11.73 GB)
DFS Remaining: 45169745920(42.07 GB)
DFS Used%: 2.2%
DFS Remaining%: 76.47%
Last contact: Fri Jul 08 10:03:40 IST 2011
But I have 2 datanodes.Safe mode is on from the last 1 hour. I know
the command to leave it manually.
I think the problem arises due to non start up of one of my
datanodes. How could i solve this problem .
Also for
HTTP ERROR: 404
/dfshealth.jsp
RequestURI=/dfshealth.jsp
/Powered by Jetty:// <http://jetty.mortbay.org/> error,
I manually check through below command at all nodes On Master :
ash-3.2$ /usr/java/jdk1.6.0_18/bin/jps 7548 SecondaryNameNode
7395 NameNode
7628 JobTracker
7713 Jps
And also on slaves :
[root@ws33-shiv-lin ~]# /usr/java/jdk1.6.0_20/bin/jps 5696 DataNode
5941 Jps
5818 TaskTracker
Thanks
[email protected] wrote:
Adarsh,
You could also run from command line
[root@xxxxxxx bin]# ./hadoop dfsadmin -report
Configured Capacity: 1151948095488 (1.05 TB)
Present Capacity: 1059350446080 (986.6 GB)
DFS Remaining: 1056175992832 (983.64 GB)
DFS Used: 3174453248 (2.96 GB)
DFS Used%: 0.3%
Under replicated blocks: 0
Blocks with corrupt replicas: 0
Missing blocks: 0
-------------------------------------------------
Datanodes available: 5 (5 total, 0 dead)
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Dhruv
Kumar
Sent: Thursday, July 07, 2011 10:01 AM
To: [email protected]
Subject: Re: HTTP Error
1) Check with jps to see if all services are functioning.
2) Have you tried appending dfshealth.jsp at the end of the URL as the
404
says?
Try using this:
http://localhost:50070/dfshealth.jsp
On Thu, Jul 7, 2011 at 7:13 AM, Adarsh Sharma
<[email protected]>wrote:
Dear all,
Today I am stucked with the strange problem in the running hadoop
cluster.
After starting hadoop by bin/start-all.sh, all nodes are started. But
when
I check through web UI ( MAster-Ip:50070), It shows :
HTTP ERROR: 404
/dfshealth.jsp
RequestURI=/dfshealth.jsp
/Powered by Jetty:// <http://jetty.mortbay.org/>
/
/I check by command line that hadoop cannot able to get out of safe
mode.
/
/I know , manually command to leave safe mode
/
/bin/hadoop dfsadmin -safemode leave
/
/But How can I make hadoop run properly and what are the reasons of
this
error
/
/
Thanks
/
