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Hadoop, mail # user - Namenode problem


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Re: Namenode problem
William Kang 2010-03-10, 03:50
Hi,
I got the log dumped here:

2010-03-09 00:36:47,795 INFO
org.apache.hadoop.hdfs.server.datanode.DataBlockScanner: Verification
succeeded for blk_6221934658367436050_1025
2010-03-09 00:46:49,155 INFO
org.apache.hadoop.hdfs.server.datanode.DataNode: BlockReport of 12 blocks
got processed in 11 msecs
2010-03-09 01:08:08,430 INFO
org.apache.hadoop.hdfs.server.datanode.DataNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down DataNode at weliam-desktop/127.0.1.1
************************************************************/
2010-03-09 22:45:54,715 INFO
org.apache.hadoop.hdfs.server.datanode.DataNode: STARTUP_MSG:
/************************************************************
STARTUP_MSG: Starting DataNode
STARTUP_MSG:   host = weliam-desktop/127.0.1.1
STARTUP_MSG:   args = []
STARTUP_MSG:   version = 0.20.1
STARTUP_MSG:   build http://svn.apache.org/repos/asf/hadoop/common/tags/release-0.20.1-rc1 -r
810220; compiled by 'oom' on Tue Sep  1 20:55:56 UTC 2009
************************************************************/
2010-03-09 22:45:55,330 ERROR
org.apache.hadoop.hdfs.server.datanode.DataNode: java.io.IOException: Call
to localhost/127.0.0.1:9000 failed on local exception: java.io.IOException:
Connection reset by peer
 at org.apache.hadoop.ipc.Client.wrapException(Client.java:774)
at org.apache.hadoop.ipc.Client.call(Client.java:742)
 at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:220)
at $Proxy4.getProtocolVersion(Unknown Source)
 at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:359)
at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:346)
 at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:383)
at org.apache.hadoop.ipc.RPC.waitForProxy(RPC.java:314)
 at org.apache.hadoop.ipc.RPC.waitForProxy(RPC.java:291)
at
org.apache.hadoop.hdfs.server.datanode.DataNode.startDataNode(DataNode.java:269)
 at
org.apache.hadoop.hdfs.server.datanode.DataNode.<init>(DataNode.java:216)
at
org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.java:1283)
 at
org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:1238)
at
org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:1246)
 at org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:1368)
Caused by: java.io.IOException: Connection reset by peer
at sun.nio.ch.FileDispatcher.read0(Native Method)
 at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:21)
at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:233)
 at sun.nio.ch.IOUtil.read(IOUtil.java:206)
at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:236)
 at
org.apache.hadoop.net.SocketInputStream$Reader.performIO(SocketInputStream.java:55)
at
org.apache.hadoop.net.SocketIOWithTimeout.doIO(SocketIOWithTimeout.java:142)
 at org.apache.hadoop.net.SocketInputStream.read(SocketInputStream.java:155)
at org.apache.hadoop.net.SocketInputStream.read(SocketInputStream.java:128)
 at java.io.FilterInputStream.read(FilterInputStream.java:116)
at
org.apache.hadoop.ipc.Client$Connection$PingInputStream.read(Client.java:276)
 at java.io.BufferedInputStream.fill(BufferedInputStream.java:218)
at java.io.BufferedInputStream.read(BufferedInputStream.java:237)
 at java.io.DataInputStream.readInt(DataInputStream.java:370)
at org.apache.hadoop.ipc.Client$Connection.receiveResponse(Client.java:501)
 at org.apache.hadoop.ipc.Client$Connection.run(Client.java:446)

2010-03-09 22:45:55,334 INFO
org.apache.hadoop.hdfs.server.datanode.DataNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down DataNode at weliam-desktop/127.0.1.1
************************************************************/

At this point, unless I format the Namenode, the web interface for hadoop at
port 50070 is not coming back.
William

On Mon, Mar 8, 2010 at 10:59 PM, Eason.Lee <[EMAIL PROTECTED]> wrote:

> It's usually in $HADOOP_HOME/logs
>
> 2010/3/9 William Kang <[EMAIL PROTECTED]>
>
> > Hi,
>