I got the solution.. Namespace IDs where some how incompatible.So I had to clean data dir and temp dir ,format the cluster and make a fresh start
Pankil On Fri, May 15, 2009 at 2:25 AM, jason hadoop <jason.had...@gmail.com>wrote: > There should be a few more lines at the end. > We only want the part from last the STARTUP_MSG to the end > > On one of mine a successfull start looks like this: > STARTUP_MSG: Starting DataNode > STARTUP_MSG: host = at/192.168.1.119 > STARTUP_MSG: args = [] > STARTUP_MSG: version = 0.19.1-dev > STARTUP_MSG: build = -r ; compiled by 'jason' on Tue Mar 17 04:03:57 PDT > 2009 > ************************************************************/ > 2009-03-17 03:08:11,884 INFO > org.apache.hadoop.hdfs.server.datanode.DataNode: Registered > FSDatasetStatusMBean > 2009-03-17 03:08:11,886 INFO > org.apache.hadoop.hdfs.server.datanode.DataNode: Opened info server at > 50010 > 2009-03-17 03:08:11,889 INFO > org.apache.hadoop.hdfs.server.datanode.DataNode: Balancing bandwith is > 1048576 bytes/s > 2009-03-17 03:08:12,142 INFO org.mortbay.http.HttpServer: Version > Jetty/5.1.4 > 2009-03-17 03:08:12,155 INFO org.mortbay.util.Credential: Checking Resource > aliases > 2009-03-17 03:08:12,518 INFO org.mortbay.util.Container: Started > org.mortbay.jetty.servlet.webapplicationhand...@1e184cb > 2009-03-17 03:08:12,578 INFO org.mortbay.util.Container: Started > WebApplicationContext[/static,/static] > 2009-03-17 03:08:12,721 INFO org.mortbay.util.Container: Started > org.mortbay.jetty.servlet.webapplicationhand...@1d9e282 > 2009-03-17 03:08:12,722 INFO org.mortbay.util.Container: Started > WebApplicationContext[/logs,/logs] > 2009-03-17 03:08:12,878 INFO org.mortbay.util.Container: Started > org.mortbay.jetty.servlet.webapplicationhand...@14a75bb > 2009-03-17 03:08:12,884 INFO org.mortbay.util.Container: Started > WebApplicationContext[/,/] > 2009-03-17 03:08:12,951 INFO org.mortbay.http.SocketListener: Started > SocketListener on 0.0.0.0:50075 > 2009-03-17 03:08:12,951 INFO org.mortbay.util.Container: Started > org.mortbay.jetty.ser...@1358f03 > 2009-03-17 03:08:12,957 INFO org.apache.hadoop.metrics.jvm.JvmMetrics: > Initializing JVM Metrics with processName=DataNode, sessionId=null > 2009-03-17 03:08:13,242 INFO org.apache.hadoop.ipc.metrics.RpcMetrics: > Initializing RPC Metrics with hostName=DataNode, port=50020 > 2009-03-17 03:08:13,264 INFO org.apache.hadoop.ipc.Server: IPC Server > Responder: starting > 2009-03-17 03:08:13,304 INFO org.apache.hadoop.ipc.Server: IPC Server > listener on 50020: starting > 2009-03-17 03:08:13,343 INFO org.apache.hadoop.ipc.Server: IPC Server > handler 0 on 50020: starting > 2009-03-17 03:08:13,343 INFO > org.apache.hadoop.hdfs.server.datanode.DataNode: dnRegistration = > DatanodeRegistration(192.168.1.119:50010, > storageID=DS-540597485-192.168.1.119-50010-1237022386925, infoPort=50075, > ipcPort=50020) > 2009-03-17 03:08:13,344 INFO org.apache.hadoop.ipc.Server: IPC Server > handler 1 on 50020: starting > 2009-03-17 03:08:13,344 INFO org.apache.hadoop.ipc.Server: IPC Server > handler 2 on 50020: starting > 2009-03-17 03:08:13,351 INFO > org.apache.hadoop.hdfs.server.datanode.DataNode: DatanodeRegistration( > 192.168.1.119:50010, > storageID=DS-540597485-192.168.1.119-50010-1237022386925, infoPort=50075, > ipcPort=50020)In DataNode.run, data = > FSDataset{dirpath='/tmp/hadoop-0.19.0-jason/dfs/data/current'} > 2009-03-17 03:08:13,352 INFO > org.apache.hadoop.hdfs.server.datanode.DataNode: using BLOCKREPORT_INTERVAL > of 3600000msec Initial delay: 0msec > 2009-03-17 03:08:13,391 INFO > org.apache.hadoop.hdfs.server.datanode.DataNode: BlockReport of 14 blocks > got processed in 27 msecs > 2009-03-17 03:08:13,392 INFO > org.apache.hadoop.hdfs.server.datanode.DataNode: Starting Periodic block > scanner. > > > > On Thu, May 14, 2009 at 9:51 PM, Pankil Doshi <forpan...@gmail.com> wrote: > > > This is log from datanode. > > > > > > 2009-05-14 00:36:14,559 INFO org.apache.hadoop.dfs.DataNode: BlockReport > of > > 82 blocks got processed in 12 msecs > > 2009-05-14 01:36:15,768 INFO org.apache.hadoop.dfs.DataNode: BlockReport > of > > 82 blocks got processed in 8 msecs > > 2009-05-14 02:36:13,975 INFO org.apache.hadoop.dfs.DataNode: BlockReport > of > > 82 blocks got processed in 9 msecs > > 2009-05-14 03:36:15,189 INFO org.apache.hadoop.dfs.DataNode: BlockReport > of > > 82 blocks got processed in 12 msecs > > 2009-05-14 04:36:13,384 INFO org.apache.hadoop.dfs.DataNode: BlockReport > of > > 82 blocks got processed in 9 msecs > > 2009-05-14 05:36:14,592 INFO org.apache.hadoop.dfs.DataNode: BlockReport > of > > 82 blocks got processed in 9 msecs > > 2009-05-14 06:36:15,806 INFO org.apache.hadoop.dfs.DataNode: BlockReport > of > > 82 blocks got processed in 12 msecs > > 2009-05-14 07:36:14,008 INFO org.apache.hadoop.dfs.DataNode: BlockReport > of > > 82 blocks got processed in 12 msecs > > 2009-05-14 08:36:15,204 INFO org.apache.hadoop.dfs.DataNode: BlockReport > of > > 82 blocks got processed in 9 msecs > > 2009-05-14 09:36:13,430 INFO org.apache.hadoop.dfs.DataNode: BlockReport > of > > 82 blocks got processed in 12 msecs > > 2009-05-14 10:36:14,642 INFO org.apache.hadoop.dfs.DataNode: BlockReport > of > > 82 blocks got processed in 12 msecs > > 2009-05-14 11:36:15,850 INFO org.apache.hadoop.dfs.DataNode: BlockReport > of > > 82 blocks got processed in 9 msecs > > 2009-05-14 12:36:14,193 INFO org.apache.hadoop.dfs.DataNode: BlockReport > of > > 82 blocks got processed in 11 msecs > > 2009-05-14 13:36:15,454 INFO org.apache.hadoop.dfs.DataNode: BlockReport > of > > 82 blocks got processed in 12 msecs > > 2009-05-14 14:36:13,662 INFO org.apache.hadoop.dfs.DataNode: BlockReport > of > > 82 blocks got processed in 9 msecs > > 2009-05-14 15:36:14,930 INFO org.apache.hadoop.dfs.DataNode: BlockReport > of > > 82 blocks got processed in 13 msecs > > 2009-05-14 16:36:16,151 INFO org.apache.hadoop.dfs.DataNode: BlockReport > of > > 82 blocks got processed in 12 msecs > > 2009-05-14 17:36:14,407 INFO org.apache.hadoop.dfs.DataNode: BlockReport > of > > 82 blocks got processed in 9 msecs > > 2009-05-14 18:36:15,659 INFO org.apache.hadoop.dfs.DataNode: BlockReport > of > > 82 blocks got processed in 10 msecs > > 2009-05-14 19:27:02,188 WARN org.apache.hadoop.dfs.DataNode: > > java.io.IOException: Call to > > hadoopmaster.utdallas.edu/10.110.95.61:9000failed on local except$ > > at org.apache.hadoop.ipc.Client.wrapException(Client.java:751) > > at org.apache.hadoop.ipc.Client.call(Client.java:719) > > at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:216) > > at org.apache.hadoop.dfs.$Proxy4.sendHeartbeat(Unknown Source) > > at org.apache.hadoop.dfs.DataNode.offerService(DataNode.java:690) > > at org.apache.hadoop.dfs.DataNode.run(DataNode.java:2967) > > at java.lang.Thread.run(Thread.java:619) > > Caused by: java.io.EOFException > > at java.io.DataInputStream.readInt(DataInputStream.java:375) > > at > > org.apache.hadoop.ipc.Client$Connection.receiveResponse(Client.java:500) > > at org.apache.hadoop.ipc.Client$Connection.run(Client.java:442) > > > > 2009-05-14 19:27:06,198 INFO org.apache.hadoop.ipc.Client: Retrying > connect > > to server: hadoopmaster.utdallas.edu/10.110.95.61:9000. Already tried 0 > > time(s). > > 2009-05-14 19:27:06,436 INFO org.apache.hadoop.dfs.DataNode: > SHUTDOWN_MSG: > > /************************************************************ > > SHUTDOWN_MSG: Shutting down DataNode at Slave1/127.0.1.1 > > ************************************************************/ > > 2009-05-14 19:27:21,737 INFO org.apache.hadoop.dfs.DataNode: STARTUP_MSG: > > /************************************************************ > > STARTUP_MSG: Starting DataNode > > STARTUP_MSG: host = Slave1/127.0.1.1 > > > > > > On Thu, May 14, 2009 at 11:43 PM, jason hadoop <jason.had...@gmail.com > > >wrote: > > > > > The data node logs are on the datanode machines in the log directory. > > > You may wish to buy my book and read chapter 4 on hdfs management. > > > > > > On Thu, May 14, 2009 at 9:39 PM, Pankil Doshi <forpan...@gmail.com> > > wrote: > > > > > > > Can u guide me where can I find datanode log files? As I cannot find > it > > > in > > > > $hadoop/logs and so. > > > > > > > > I can only find following files in logs folder :- > > > > > > > > hadoop-hadoop-namenode-hadoopmaster.log > > > > hadoop-hadoop-namenode-hadoopmaster.out > > > > hadoop-hadoop-namenode-hadoopmaster.out.1 > > > > hadoop-hadoop-secondarynamenode-hadoopmaster.log > > > > hadoop-hadoop-secondarynamenode-hadoopmaster.out > > > > hadoop-hadoop-secondarynamenode-hadoopmaster.out.1 > > > > history > > > > > > > > > > > > Thanks > > > > Pankil > > > > > > > > On Thu, May 14, 2009 at 11:27 PM, jason hadoop < > jason.had...@gmail.com > > > > >wrote: > > > > > > > > > You have to examine the datanode log files > > > > > the namenode does not start the datanodes, the start script does. > > > > > The name node passively waits for the datanodes to connect to it. > > > > > > > > > > On Thu, May 14, 2009 at 6:43 PM, Pankil Doshi <forpan...@gmail.com > > > > > > wrote: > > > > > > > > > > > Hello Everyone, > > > > > > > > > > > > Actually I had a cluster which was up. > > > > > > > > > > > > But i stopped the cluster as i wanted to format it.But cant > start > > it > > > > > back. > > > > > > > > > > > > 1)when i give "start-dfs.sh" I get following on screen > > > > > > > > > > > > starting namenode, logging to > > > > > > > > > > > > /Hadoop/hadoop-0.18.3/bin/../logs/hadoop-hadoop-namenode-hadoopmaster.out > > > > > > slave1.local: starting datanode, logging to > > > > > > > /Hadoop/hadoop-0.18.3/bin/../logs/hadoop-hadoop-datanode-Slave1.out > > > > > > slave3.local: starting datanode, logging to > > > > > > > /Hadoop/hadoop-0.18.3/bin/../logs/hadoop-hadoop-datanode-Slave3.out > > > > > > slave4.local: starting datanode, logging to > > > > > > > /Hadoop/hadoop-0.18.3/bin/../logs/hadoop-hadoop-datanode-Slave4.out > > > > > > slave2.local: starting datanode, logging to > > > > > > > /Hadoop/hadoop-0.18.3/bin/../logs/hadoop-hadoop-datanode-Slave2.out > > > > > > slave5.local: starting datanode, logging to > > > > > > > /Hadoop/hadoop-0.18.3/bin/../logs/hadoop-hadoop-datanode-Slave5.out > > > > > > slave6.local: starting datanode, logging to > > > > > > > /Hadoop/hadoop-0.18.3/bin/../logs/hadoop-hadoop-datanode-Slave6.out > > > > > > slave9.local: starting datanode, logging to > > > > > > > /Hadoop/hadoop-0.18.3/bin/../logs/hadoop-hadoop-datanode-Slave9.out > > > > > > slave8.local: starting datanode, logging to > > > > > > > /Hadoop/hadoop-0.18.3/bin/../logs/hadoop-hadoop-datanode-Slave8.out > > > > > > slave7.local: starting datanode, logging to > > > > > > > /Hadoop/hadoop-0.18.3/bin/../logs/hadoop-hadoop-datanode-Slave7.out > > > > > > slave10.local: starting datanode, logging to > > > > > > > > /Hadoop/hadoop-0.18.3/bin/../logs/hadoop-hadoop-datanode-Slave10.out > > > > > > hadoopmaster.local: starting secondarynamenode, logging to > > > > > > > > > > > > > > > > > > > > > > > > > > > /Hadoop/hadoop-0.18.3/bin/../logs/hadoop-hadoop-secondarynamenode-hadoopmaster.out > > > > > > > > > > > > > > > > > > 2) from log file named "hadoop-hadoop-namenode-hadoopmaster.log" > I > > > get > > > > > > following > > > > > > > > > > > > > > > > > > > > > > > > 2009-05-14 20:28:23,515 INFO org.apache.hadoop.dfs.NameNode: > > > > STARTUP_MSG: > > > > > > /************************************************************ > > > > > > STARTUP_MSG: Starting NameNode > > > > > > STARTUP_MSG: host = hadoopmaster/127.0.0.1 > > > > > > STARTUP_MSG: args = [] > > > > > > STARTUP_MSG: version = 0.18.3 > > > > > > STARTUP_MSG: build = > > > > > > > https://svn.apache.org/repos/asf/hadoop/core/branches/branch-0.18-r > > > > > > 736250; > > > > > > compiled by 'ndaley' on Thu Jan 22 23:12:08 UTC 2009 > > > > > > ************************************************************/ > > > > > > 2009-05-14 20:28:23,717 INFO > > > org.apache.hadoop.ipc.metrics.RpcMetrics: > > > > > > Initializing RPC Metrics with hostName=NameNode, port=9000 > > > > > > 2009-05-14 20:28:23,728 INFO org.apache.hadoop.dfs.NameNode: > > Namenode > > > > up > > > > > > at: > > > > > > hadoopmaster.local/192.168.0.1:9000 > > > > > > 2009-05-14 20:28:23,733 INFO > > > org.apache.hadoop.metrics.jvm.JvmMetrics: > > > > > > Initializing JVM Metrics with processName=NameNode, > sessionId=null > > > > > > 2009-05-14 20:28:23,743 INFO > org.apache.hadoop.dfs.NameNodeMetrics: > > > > > > Initializing NameNodeMeterics using context > > > > > > object:org.apache.hadoop.metrics.spi.NullContext > > > > > > 2009-05-14 20:28:23,856 INFO org.apache.hadoop.fs.FSNamesystem: > > > > > > > > > > > > > > > > > > > > > > > > > > > fsOwner=hadoop,hadoop,adm,dialout,fax,cdrom,floppy,tape,audio,dip,video,plugdev,fuse,lpadmin,admin,sambashare > > > > > > 2009-05-14 20:28:23,856 INFO org.apache.hadoop.fs.FSNamesystem: > > > > > > supergroup=supergroup > > > > > > 2009-05-14 20:28:23,856 INFO org.apache.hadoop.fs.FSNamesystem: > > > > > > isPermissionEnabled=true > > > > > > 2009-05-14 20:28:23,883 INFO > > > org.apache.hadoop.dfs.FSNamesystemMetrics: > > > > > > Initializing FSNamesystemMeterics using context > > > > > > object:org.apache.hadoop.metrics.spi.NullContext > > > > > > 2009-05-14 20:28:23,885 INFO org.apache.hadoop.fs.FSNamesystem: > > > > > Registered > > > > > > FSNamesystemStatusMBean > > > > > > 2009-05-14 20:28:23,964 INFO org.apache.hadoop.dfs.Storage: > Number > > of > > > > > files > > > > > > = 1 > > > > > > 2009-05-14 20:28:23,971 INFO org.apache.hadoop.dfs.Storage: > Number > > of > > > > > files > > > > > > under construction = 0 > > > > > > 2009-05-14 20:28:23,971 INFO org.apache.hadoop.dfs.Storage: Image > > > file > > > > of > > > > > > size 80 loaded in 0 seconds. > > > > > > 2009-05-14 20:28:23,972 INFO org.apache.hadoop.dfs.Storage: Edits > > > file > > > > > > edits > > > > > > of size 4 edits # 0 loaded in 0 seconds. > > > > > > 2009-05-14 20:28:23,974 INFO org.apache.hadoop.fs.FSNamesystem: > > > > Finished > > > > > > loading FSImage in 155 msecs > > > > > > 2009-05-14 20:28:23,976 INFO org.apache.hadoop.fs.FSNamesystem: > > Total > > > > > > number > > > > > > of blocks = 0 > > > > > > 2009-05-14 20:28:23,988 INFO org.apache.hadoop.fs.FSNamesystem: > > > Number > > > > of > > > > > > invalid blocks = 0 > > > > > > 2009-05-14 20:28:23,988 INFO org.apache.hadoop.fs.FSNamesystem: > > > Number > > > > of > > > > > > under-replicated blocks = 0 > > > > > > 2009-05-14 20:28:23,988 INFO org.apache.hadoop.fs.FSNamesystem: > > > Number > > > > of > > > > > > over-replicated blocks = 0 > > > > > > 2009-05-14 20:28:23,988 INFO org.apache.hadoop.dfs.StateChange: > > > STATE* > > > > > > Leaving safe mode after 0 secs. > > > > > > *2009-05-14 20:28:23,989 INFO org.apache.hadoop.dfs.StateChange: > > > STATE* > > > > > > Network topology has 0 racks and 0 datanodes* > > > > > > 2009-05-14 20:28:23,989 INFO org.apache.hadoop.dfs.StateChange: > > > STATE* > > > > > > UnderReplicatedBlocks has 0 blocks > > > > > > 2009-05-14 20:28:29,128 INFO org.mortbay.util.Credential: > Checking > > > > > Resource > > > > > > aliases > > > > > > 2009-05-14 20:28:29,243 INFO org.mortbay.http.HttpServer: Version > > > > > > Jetty/5.1.4 > > > > > > 2009-05-14 20:28:29,244 INFO org.mortbay.util.Container: Started > > > > > > HttpContext[/static,/static] > > > > > > 2009-05-14 20:28:29,245 INFO org.mortbay.util.Container: Started > > > > > > HttpContext[/logs,/logs] > > > > > > 2009-05-14 20:28:29,750 INFO org.mortbay.util.Container: Started > > > > > > org.mortbay.jetty.servlet.webapplicationhand...@7fcebc9f > > > > > > 2009-05-14 20:28:29,838 INFO org.mortbay.util.Container: Started > > > > > > WebApplicationContext[/,/] > > > > > > 2009-05-14 20:28:29,843 INFO org.mortbay.http.SocketListener: > > Started > > > > > > SocketListener on 0.0.0.0:50070 > > > > > > 2009-05-14 20:28:29,843 INFO org.mortbay.util.Container: Started > > > > > > org.mortbay.jetty.ser...@61acfa31 > > > > > > 2009-05-14 20:28:29,843 INFO org.apache.hadoop.fs.FSNamesystem: > > > > > Web-server > > > > > > up at: 0.0.0.0:50070 > > > > > > 2009-05-14 20:28:29,843 INFO org.apache.hadoop.ipc.Server: IPC > > Server > > > > > > Responder: starting > > > > > > 2009-05-14 20:28:29,844 INFO org.apache.hadoop.ipc.Server: IPC > > Server > > > > > > listener on 9000: starting > > > > > > 2009-05-14 20:28:29,865 INFO org.apache.hadoop.ipc.Server: IPC > > Server > > > > > > handler 0 on 9000: starting > > > > > > 2009-05-14 20:28:29,876 INFO org.apache.hadoop.ipc.Server: IPC > > Server > > > > > > handler 1 on 9000: starting > > > > > > 2009-05-14 20:28:29,877 INFO org.apache.hadoop.ipc.Server: IPC > > Server > > > > > > handler 2 on 9000: starting > > > > > > 2009-05-14 20:28:29,877 INFO org.apache.hadoop.ipc.Server: IPC > > Server > > > > > > handler 3 on 9000: starting > > > > > > 2009-05-14 20:28:29,878 INFO org.apache.hadoop.ipc.Server: IPC > > Server > > > > > > handler 4 on 9000: starting > > > > > > 2009-05-14 20:28:29,879 INFO org.apache.hadoop.ipc.Server: IPC > > Server > > > > > > handler 5 on 9000: starting > > > > > > 2009-05-14 20:28:29,879 INFO org.apache.hadoop.ipc.Server: IPC > > Server > > > > > > handler 6 on 9000: starting > > > > > > 2009-05-14 20:28:29,881 INFO org.apache.hadoop.ipc.Server: IPC > > Server > > > > > > handler 7 on 9000: starting > > > > > > 2009-05-14 20:28:29,881 INFO org.apache.hadoop.ipc.Server: IPC > > Server > > > > > > handler 8 on 9000: starting > > > > > > 2009-05-14 20:28:29,882 INFO org.apache.hadoop.ipc.Server: IPC > > Server > > > > > > handler 9 on 9000: starting > > > > > > 2009-05-14 20:33:35,774 INFO org.apache.hadoop.fs.FSNamesystem: > > Roll > > > > Edit > > > > > > Log from 192.168.0.1 > > > > > > 2009-05-14 20:33:35,775 INFO org.apache.hadoop.fs.FSNamesystem: > > > Number > > > > of > > > > > > transactions: 0 Total time for transactions(ms): 0 Number of > syncs: > > 0 > > > > > > SyncTimes(ms): 0 > > > > > > 2009-05-14 20:33:36,310 INFO org.apache.hadoop.fs.FSNamesystem: > > Roll > > > > > > FSImage > > > > > > from 192.168.0.1 > > > > > > 2009-05-14 20:33:36,311 INFO org.apache.hadoop.fs.FSNamesystem: > > > Number > > > > of > > > > > > transactions: 0 Total time for transactions(ms): 0 Number of > syncs: > > 0 > > > > > > SyncTimes(ms): 0 > > > > > > > > > > > > > > > > > > > > > > > > 3) my hadoop-site.xml for refrence > > > > > > > > > > > > <?xml version="1.0"?> > > > > > > <?xml-stylesheet type="text/xsl" href="configuration.xsl"?> > > > > > > > > > > > > <!-- Put site-specific property overrides in this file. --> > > > > > > <configuration> > > > > > > <property> > > > > > > <name>fs.default.name</name> > > > > > > <value>hdfs://hadoopmaster.local:9000</value> > > > > > > </property> > > > > > > <property> > > > > > > <name>mapred.job.tracker</name> > > > > > > <value>hadoopmaster.local:9001</value> > > > > > > </property> > > > > > > <property> > > > > > > <name>dfs.replication</name> > > > > > > <value>3</value> > > > > > > </property> > > > > > > <property> > > > > > > <name>mapred.child.java.opts</name> > > > > > > <value>-Xmx512m</value> > > > > > > </property> > > > > > > <property> > > > > > > <name>hadoop.tmp.dir</name> > > > > > > <value>/Hadoop/Temp</value> > > > > > > <description>A base for other temporary > directories.</description> > > > > > > </property> > > > > > > <property> > > > > > > <name>dfs.data.dir</name> > > > > > > <value>/Hadoop/Data,/data/Hadoop</value> > > > > > > <description>Determines where on the local filesystem an DFS > data > > > node > > > > > > should store its blocks. If this is a comma-delimited > > > > > > list of directories, then data will be stored in all named > > > > > > directories, typically on different devices. > > > > > > Directories that do not exist are ignored. > > > > > > </description> > > > > > > </property> > > > > > > </configuration> > > > > > > > > > > > > > > > > > > the main thing i find in log it says "*2009-05-14 20:28:23,989 > INFO > > > > > > org.apache.hadoop.dfs.StateChange: STATE* Network topology has 0 > > > racks > > > > > and > > > > > > 0 > > > > > > datanodes" *which means it cannot start datanodes*.*but why is it > > so? > > > I > > > > > > have > > > > > > all my datanodes in my slave.xml and it detects that on start up > > > screen > > > > > > when > > > > > > i give start-dfs.sh. > > > > > > > > > > > > > > > > > > Can anyone throw some lights on my problem. > > > > > > > > > > > > Thanks > > > > > > Pankil > > > > > > > > > > > > > > > > > > > > > > > > > > -- > > > > > Alpha Chapters of my book on Hadoop are available > > > > > http://www.apress.com/book/view/9781430219422 > > > > > www.prohadoopbook.com a community for Hadoop Professionals > > > > > > > > > > > > > > > > > > > > > -- > > > Alpha Chapters of my book on Hadoop are available > > > http://www.apress.com/book/view/9781430219422 > > > www.prohadoopbook.com a community for Hadoop Professionals > > > > > > > > > -- > Alpha Chapters of my book on Hadoop are available > http://www.apress.com/book/view/9781430219422 > www.prohadoopbook.com a community for Hadoop Professionals >