It appears I have incompatible namespaceIDs. Any thoughts on how to
resolve that?
This is what the full datanodes log is saying:
2010-02-10 15:25:09,125 INFO
org.apache.hadoop.hdfs.server.datanode.DataNode: STARTUP_MSG:
/************************************************************
STARTUP_MSG: Starting DataNode
STARTUP_MSG: host = potr134pc26/127.0.0.1
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
************************************************************/
2010-02-10 15:25:13,785 ERROR
org.apache.hadoop.hdfs.server.datanode.DataNode: java.io.IOException:
Incompatible namespaceIDs in
/home/hadoop/hadoop-datastore/hadoop-hadoop/dfs/data: namenode namespaceID
= 2082816383; datanode namespaceID = 1109869136
at
org.apache.hadoop.hdfs.server.datanode.DataStorage.doTransition(DataStorage.java:233)
at
org.apache.hadoop.hdfs.server.datanode.DataStorage.recoverTransitionRead(DataStorage.java:148)
at
org.apache.hadoop.hdfs.server.datanode.DataNode.startDataNode(DataNode.java:298)
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)
2010-02-10 15:25:13,786 INFO
org.apache.hadoop.hdfs.server.datanode.DataNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down DataNode at potr134pc26/127.0.0.1
************************************************************/
On Wed, 10 Feb 2010, Nick Klosterman wrote:
I've been following Michael Noll's Single node cluster tutorial but am
unable to run the wordcount example successfully.
It appears that I'm having some sort of problem involving the nodes. Using
copyFromLocal fails to replicate the data across 1 node.
When I try to look at the hadoop web interfaces I see that there aren't any
nodes (alive or dead) listed.
After I start things this is what I get from dfsadmin -report
/usr/local/hadoop/bin$ ./hadoop dfsadmin -report
Configured Capacity: 0 (0 KB)
Present Capacity: 0 (0 KB)
DFS Remaining: 0 (0 KB)
DFS Used: 0 (0 KB)
DFS Used%: %
Under replicated blocks: 0
Blocks with corrupt replicas: 0
Missing blocks: 0
-------------------------------------------------
Datanodes available: 0 (0 total, 0 dead)
Here are the commands I'm entering and the output of them:
/usr/local/hadoop/bin$ ./start-all.sh
starting namenode, logging to
/usr/local/hadoop/bin/../logs/hadoop-hadoop-namenode-potr134pc26.out
localhost: starting datanode, logging to
/usr/local/hadoop/bin/../logs/hadoop-hadoop-datanode-potr134pc26.out
localhost: starting secondarynamenode, logging to
/usr/local/hadoop/bin/../logs/hadoop-hadoop-secondarynamenode-potr134pc26.out
starting jobtracker, logging to
/usr/local/hadoop/bin/../logs/hadoop-hadoop-jobtracker-potr134pc26.out
localhost: starting tasktracker, logging to
/usr/local/hadoop/bin/../logs/hadoop-hadoop-tasktracker-potr134pc26.out
/usr/local/hadoop/bin$ jps
24440 SecondaryNameNode
24626 TaskTracker
24527 JobTracker
24218 NameNode
24725 Jps
---> I had all ready created the txtinput directory with ./hadoop dfs -mkdir
txtinput
/usr/local/hadoop/bin$ ./hadoop dfs -copyFromLocal /home/hadoop/Desktop/*.txt
txtinput
10/02/10 15:29:38 WARN hdfs.DFSClient: DataStreamer Exception:
org.apache.hadoop.ipc.RemoteException: java.io.IOException: File
/user/hadoop/txtinput/20417.txt could only be replicated to 0 nodes, instead
of 1
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1267)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:422)
at sun.reflect.GeneratedMethodAccessor8.invoke(Unknown Source)
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:739)
at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:220)
at $Proxy0.addBlock(Unknown Source)
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.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:82)
at
org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:59)
at $Proxy0.addBlock(Unknown Source)
at
org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.locateFollowingBlock(DFSClient.java:2904)
at
org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.nextBlockOutputStream(DFSClient.java:2786)
at
org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.access$2000(DFSClient.java:2076)
at
org.apache.hadoop.hdfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:2262)
10/02/10 15:29:38 WARN hdfs.DFSClient: Error Recovery for block null bad
datanode[0] nodes == null
10/02/10 15:29:38 WARN hdfs.DFSClient: Could not get block locations. Source
file "/user/hadoop/txtinput/20417.txt" - Aborting...
10/02/10 15:29:38 WARN hdfs.DFSClient: DataStreamer Exception:
org.apache.hadoop.ipc.RemoteException: java.io.IOException: File
/user/hadoop/txtinput/7ldvc10.txt could only be replicated to 0 nodes,
instead of 1
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1267)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:422)
at sun.reflect.GeneratedMethodAccessor8.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.hadoop.ipc.RPC$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:739)
at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:220)
at $Proxy0.addBlock(Unknown Source)
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.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:82)
at
org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:59)
at $Proxy0.addBlock(Unknown Source)
at
org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.locateFollowingBlock(DFSClient.java:2904)
at
org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.nextBlockOutputStream(DFSClient.java:2786)
at
org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.access$2000(DFSClient.java:2076)
at
org.apache.hadoop.hdfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:2262)
10/02/10 15:29:38 WARN hdfs.DFSClient: Error Recovery for block null bad
datanode[0] nodes == null
10/02/10 15:29:38 WARN hdfs.DFSClient: Could not get block locations. Source
file "/user/hadoop/txtinput/7ldvc10.txt" - Aborting...
copyFromLocal: java.io.IOException: File /user/hadoop/txtinput/20417.txt
could only be replicated to 0 nodes, instead of 1
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1267)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:422)
at sun.reflect.GeneratedMethodAccessor8.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.hadoop.ipc.RPC$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)
java.io.IOException: File /user/hadoop/txtinput/7ldvc10.txt could only be
replicated to 0 nodes, instead of 1
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1267)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:422)
at sun.reflect.GeneratedMethodAccessor8.invoke(Unknown Source)
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)
/usr/local/hadoop/bin$ ./hadoop jar ../hadoop-0.20.1-examples.jar wordcount
txtinput txtoutput
The last command just ends up sitting there doing nothing with no output.
Any help getting the nodes up and running would be appreciated.
Thanks,
Nick
