Hello,
I am trying to configure Hadoop in fully distributed mode on three virtual
Fedora machines. During configuring I am not getting any error. Even when I
am executing the script "start-dfs.sh", there aren't any error.
But practically the namenode isn't able to connect the datanodes. These are
the error snippents from the "hadoop-root-datanode-hadoop2.log" files of
both datanodes....
==================================================================
************************************************************
STARTUP_MSG: Starting DataNode
STARTUP_MSG: host = hadoop2/127.0.0.1
STARTUP_MSG: args = []
STARTUP_MSG: version = 0.20.2-CDH3B4
STARTUP_MSG: build = -r 3aa7c91592ea1c53f3a913a581dbfcdfebe98bfe;
compiled by 'root' on Mon Feb 21 17:31:12 EST 2011
************************************************************/
2011-04-08 15:33:03,537 WARN org.apache.hadoop.util.NativeCodeLoader: Unable
to load native-hadoop library for your platform... using builtin-java
classes where applicable
2011-04-08 15:33:03,549 INFO
org.apache.hadoop.security.UserGroupInformation: JAAS Configuration already
set up for Hadoop, not re-installing.
2011-04-08 15:33:03,691 ERROR
org.apache.hadoop.hdfs.server.datanode.DataNode: java.io.IOException: Call
to hadoop1/192.168.161.198:8020 failed on local exception:
java.io.IOException: Connection reset by peer
at org.apache.hadoop.ipc.Client.wrapException(Client.java:1139)
at org.apache.hadoop.ipc.Client.call(Client.java:1107)
at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:226)
at $Proxy4.getProtocolVersion(Unknown Source)
at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:398)
at org.apache.hadoop.ipc.RPC.waitForProxy(RPC.java:342)
at org.apache.hadoop.ipc.RPC.waitForProxy(RPC.java:317)
at org.apache.hadoop.ipc.RPC.waitForProxy(RPC.java:297)
at
org.apache.hadoop.hdfs.server.datanode.DataNode.startDataNode(DataNode.java:338)
at
org.apache.hadoop.hdfs.server.datanode.DataNode.<init>(DataNode.java:280)
at
org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.java:1527)
at
org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:1467)
at
org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:1485)
at
org.apache.hadoop.hdfs.server.datanode.DataNode.secureMain(DataNode.java:1610)
at
org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:1620)
Caused by: java.io.IOException: Connection reset by peer
at sun.nio.ch.FileDispatcher.read0(Native Method)
at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:21)
at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:202)
at sun.nio.ch.IOUtil.read(IOUtil.java:175)
at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:243)
at
org.apache.hadoop.net.SocketInputStream$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:375)
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$Connection.receiveResponse(Client.java:812)
at org.apache.hadoop.ipc.Client$Connection.run(Client.java:720)
2011-04-08 15:33:03,692 INFO
org.apache.hadoop.hdfs.server.datanode.DataNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down DataNode at hadoop2/127.0.0.1
************************************************************/
2011-04-08 15:47:46,416 INFO
org.apache.hadoop.hdfs.server.datanode.DataNode: STARTUP_MSG:
/************************************************************
STARTUP_MSG: Starting DataNode
STARTUP_MSG: host = hadoop2/127.0.0.1
STARTUP_MSG: args = []
STARTUP_MSG: version = 0.20.2-CDH3B4
STARTUP_MSG: build = -r 3aa7c91592ea1c53f3a913a581dbfcdfebe98bfe;
compiled by 'root' on Mon Feb 21 17:31:12 EST 2011
************************************************************/
2011-04-08 15:47:46,738 INFO
org.apache.hadoop.security.UserGroupInformation: JAAS Configuration already
set up for Hadoop, not re-installing.
2011-04-08 15:47:47,839 INFO org.apache.hadoop.ipc.Client: Retrying connect
to server: hadoop1/192.168.161.198:8020. Already tried 0 time(s).
2011-04-08 15:47:48,849 INFO org.apache.hadoop.ipc.Client: Retrying connect
to server: hadoop1/192.168.161.198:8020. Already tried 1 time(s).
2011-04-08 15:47:49,859 INFO org.apache.hadoop.ipc.Client: Retrying connect
to server: hadoop1/192.168.161.198:8020. Already tried 2 time(s).
2011-04-08 15:47:50,869 INFO org.apache.hadoop.ipc.Client: Retrying connect
to server: hadoop1/192.168.161.198:8020. Already tried 3 time(s).
2011-04-08 15:47:51,878 INFO org.apache.hadoop.ipc.Client: Retrying connect
to server: hadoop1/192.168.161.198:8020. Already tried 4 time(s).
2011-04-08 15:47:52,889 INFO org.apache.hadoop.ipc.Client: Retrying connect
to server: hadoop1/192.168.161.198:8020. Already tried 5 time(s).
2011-04-08 15:47:53,900 INFO org.apache.hadoop.ipc.Client: Retrying connect
to server: hadoop1/192.168.161.198:8020. Already tried 6 time(s).
2011-04-08 15:47:54,908 INFO org.apache.hadoop.ipc.Client: Retrying connect
to server: hadoop1/192.168.161.198:8020. Already tried 7 time(s).
2011-04-08 15:47:55,917 INFO org.apache.hadoop.ipc.Client: Retrying connect
to server: hadoop1/192.168.161.198:8020. Already tried 8 time(s).
2011-04-08 15:47:56,926 INFO org.apache.hadoop.ipc.Client: Retrying connect
to server: hadoop1/192.168.161.198:8020. Already tried 9 time(s).
2011-04-08 15:47:56,928 INFO org.apache.hadoop.ipc.RPC: Server at
hadoop1/192.168.161.198:8020 not available yet, Zzzzz...
2011-04-08 15:47:58,944 INFO org.apache.hadoop.ipc.Client: Retrying connect
to server: hadoop1/192.168.161.198:8020. Already tried 0 time(s).
2011-04-08 15:47:59,953 INFO org.apache.hadoop.ipc.Client: Retrying connect
to server: hadoop1/192.168.161.198:8020. Already tried 1 time(s).
2011-04-08 15:48:00,961 INFO org.apache.hadoop.ipc.Client: Retrying connect
to server: hadoop1/192.168.161.198:8020. Already tried 2 time(s).
=============================================================================
Can anyone please help me to understand the problem.
Thanks in advance.
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