I also note that for non-root passwordless ssh, you must chmod authorized_keys file to 655,
On 03/01/2008, Miles Osborne <[EMAIL PROTECTED]> wrote: > > You need to make sure that each slave node has a copy of the authorised > keys > you generated on the master node. > > Miles > > On 03/01/2008, Dhaya007 <[EMAIL PROTECTED]> wrote: > > > > > > Thanks Arun, > > > > I am able to riun the datanode in slave (As per the solution given by > You > > (listinig port )) > > > > But still it asks the pasword while starting the dfs ans mapreduce > > > > First i generated rsa as password less as follws > > > > ssh-keygen -t rsa -P "" > > cat $HOME/.ssh/id_rsa.pub >> $HOME/.ssh/authorized_keys > > ssh master > > ssh slave > > I started the dfs in master as follows > > /bin/start-dfs.sh > > it asks the passowrd > > Please help me to resolve the same (I dont know i am doing right in the > > case > > of ssh) > > > > > > > > Dhaya007 wrote: > > > > > > > > > > > > Arun C Murthy wrote: > > >> > > >> What version of Hadoop are you running? > > >> Dhaya007:hadoop-0.15.1 > > >> > > >> http://wiki.apache.org/lucene-hadoop/Help > > >> > > >> Dhaya007 wrote: > > >> > ..datanode-slave.log > > >>> 2007-12-19 19:30:55,579 WARN org.apache.hadoop.dfs.DataNode: Invalid > > >>> directory in dfs.data.dir: directory is not writable: > > >>> /tmp/hadoop-hdpusr/dfs/data > > >>> 2007-12-19 19:30:55,579 ERROR org.apache.hadoop.dfs.DataNode: All > > >>> directories in dfs.data.dir are invalid. > > >> > > >> Did you check that directory? > > >> Daya007:Yes, i have checked the folder in which there is no file > saved. > > >> > > >> DataNode is complaining that it doesn't have any 'valid' directories > to > > >> store data in. > > >> > > >>> Tasktracker_slav.log > > >>> 2008-01-02 15:10:34,419 ERROR org.apache.hadoop.mapred.TaskTracker: > > Can > > >>> not > > >>> start task tracker because java.net.UnknownHostException: unknown > > host: > > >>> localhost > > >>> at org.apache.hadoop.ipc.Client$Connection.<init>(Client.java > :136) > > >>> at org.apache.hadoop.ipc.Client.getConnection(Client.java:532) > > >>> at org.apache.hadoop.ipc.Client.call(Client.java:471) > > >>> at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:184) > > >>> at org.apache.hadoop.mapred.$Proxy0.getProtocolVersion(Unknown > > Source) > > >>> at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:269) > > >>> at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:293) > > >>> at org.apache.hadoop.ipc.RPC.waitForProxy(RPC.java:246) > > >>> at > > >>> org.apache.hadoop.mapred.TaskTracker.initialize(TaskTracker.java > :427) > > >>> at org.apache.hadoop.mapred.TaskTracker.<init>(TaskTracker.java > > :717) > > >>> at org.apache.hadoop.mapred.TaskTracker.main(TaskTracker.java > > :1880) > > >>> > > >> > > >> That probably means that the TaskTracker's hadoop-site.xml says that > > >> 'localhost' is the JobTracker which isn't true... > > >> > > >> hadoop-site.xml is as follows > > >> <?xml version="1.0"?> > > >> <?xml-stylesheet type="text/xsl" href="configuration.xsl"?> > > >> > > >> <!-- Put site-specific property overrides in this file. --> > > >> > > >> <configuration> > > >> <property> > > >> <name>hadoop.tmp.dir</name> > > >> <value>/home/hdusr/hadoop-${user.name}</value> > > >> <description>A base for other temporary directories.</description> > > >> </property> > > >> > > >> <property> > > >> <name>fs.default.name</name> > > >> <value>hdfs://master:54310</value> > > >> <description>The name of the default file system. A URI whose > > >> scheme and authority determine the FileSystem implementation. The > > >> uri's scheme determines the config property (fs.SCHEME.impl) naming > > >> the FileSystem implementation class. The uri's authority is used > to > > >> determine the host, port, etc. for a filesystem.</description> > > >> </property> > > >> > > >> <property> > > >> <name>mapred.job.tracker</name> > > >> <value>master:54311</value> > > >> <description>The host and port that the MapReduce job tracker runs > > >> at. If "local", then jobs are run in-process as a single map > > >> and reduce task. > > >> </description> > > >> </property> > > >> > > >> <property> > > >> <name>dfs.replication</name> > > >> <value>2</value> > > >> <description>Default block replication. > > >> The actual number of replications can be specified when the file is > > >> created. > > >> The default is used if replication is not specified in create time. > > >> </description> > > >> </property> > > >> > > >> <property> > > >> <name>mapred.map.tasks</name> > > >> <value>20</value> > > >> <description>As a rule of thumb, use 10x the number of slaves (i.e > ., > > >> number of tasktrackers). > > >> </description> > > >> </property> > > >> > > >> <property> > > >> <name>mapred.reduce.tasks</name> > > >> <value>4</value> > > >> <description>As a rule of thumb, use 2x the number of slave > > processors > > >> (i.e., number of tasktrackers). > > >> </description> > > >> </property> > > >> </configuration> > > >> > > >> > namenode-master.log > > >> > 2008-01-02 14:44:02,636 INFO org.apache.hadoop.dfs.Storage: > Storage > > >> > directory /tmp/hadoop-hdpusr/dfs/name does not exist. > > >> > 2008-01-02 14:44:02,638 INFO org.apache.hadoop.ipc.Server: > Stopping > > >> server > > >> > on 54310 > > >> > 2008-01-02 14:44:02,653 ERROR org.apache.hadoop.dfs.NameNode: > > >> > org.apache.hadoop.dfs.InconsistentFSStateException: Directory > > >> > /tmp/hadoop-hdpusr/dfs/name is in an inconsistent state: storage > > >> directory > > >> > does not exist or is not accessible. > > >> > > >> That means that, /tmp/hadoop-hdpusr/dfs/name doesn't exist or isn't > > >> accessible. > > >> > > >> Dhaya007 I have checked the name folder but i wont find any folder in > > the > > >> specified dir > > >> -*-*- > > >> > > >> Overall, this looks like an acute case of wrong-configuration-itis. > > >> Please provid the corect configuration site example for multi node > > >> cluster other than > > >> > > > http://www.michael-noll.com/wiki/Running_Hadoop_On_Ubuntu_Linux_%28Single-Node_Cluster%29 > > >> because i followed the same > > >> > > >> Have you got the same hadoop-site.xml on all your nodes? > > >> Dhaya007:Yes > > >> > > >> More info here: > > >> http://lucene.apache.org/hadoop/docs/r0.15.1/cluster_setup.html > > >> Dhaya007: I followed the same site you have mentioned but no solution > > >> > > >> Arun > > >> > > >> > > >>> 2008-01-02 15:10:34,420 INFO org.apache.hadoop.mapred.TaskTracker: > > >>> SHUTDOWN_MSG: > > >>> /************************************************************ > > >>> SHUTDOWN_MSG: Shutting down TaskTracker at slave/172.16.0.58 > > >>> ************************************************************/ > > >>> > > >>> > > >>> And all the ports are running > > >>> Some time it asks password and some time it wont while starting the > > dfs > > >>> > > >>> Master logs > > >>> 2008-01-02 14:44:02,677 INFO org.apache.hadoop.dfs.NameNode: > > >>> SHUTDOWN_MSG: > > >>> /************************************************************ > > >>> SHUTDOWN_MSG: Shutting down NameNode at master/172.16.0.25 > > >>> ************************************************************/ > > >>> > > >>> Datanode-master.log > > >>> 2008-01-02 16:26:32,380 INFO org.apache.hadoop.ipc.RPC: Server at > > >>> localhost/127.0.0.1:54310 not available yet, Zzzzz... > > >>> 2008-01-02 16:26:33,390 INFO org.apache.hadoop.ipc.Client: Retrying > > >>> connect > > >>> to server: localhost/127.0.0.1:54310. Already tried 1 time(s). > > >>> 2008-01-02 16:26:34,400 INFO org.apache.hadoop.ipc.Client: Retrying > > >>> connect > > >>> to server: localhost/127.0.0.1:54310. Already tried 2 time(s). > > >>> 2008-01-02 16:26:35,410 INFO org.apache.hadoop.ipc.Client: Retrying > > >>> connect > > >>> to server: localhost/127.0.0.1:54310. Already tried 3 time(s). > > >>> 2008-01-02 16:26:36,420 INFO org.apache.hadoop.ipc.Client: Retrying > > >>> connect > > >>> to server: localhost/127.0.0.1:54310. Already tried 4 time(s). > > >>> *********************************************** > > >>> Jobtracker_master.log > > >>> 2008-01-02 16:25:41,040 INFO org.apache.hadoop.ipc.Client: Retrying > > >>> connect > > >>> to server: localhost/127.0.0.1:54310. Already tried 10 time(s). > > >>> 2008-01-02 16:25:42,050 INFO org.apache.hadoop.mapred.JobTracker: > > >>> problem > > >>> cleaning system directory: /tmp/hadoop-hdpusr/mapred/system > > >>> java.net.ConnectException: Connection refused > > >>> at java.net.PlainSocketImpl.socketConnect(Native Method) > > >>> at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333) > > >>> at java.net.PlainSocketImpl.connectToAddress( > PlainSocketImpl.java > > :195) > > >>> at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182) > > >>> at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366) > > >>> at java.net.Socket.connect(Socket.java:520) > > >>> at > > >>> org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java > > :152) > > >>> at org.apache.hadoop.ipc.Client.getConnection(Client.java:542) > > >>> at org.apache.hadoop.ipc.Client.call(Client.java:471) > > >>> at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:184) > > >>> at org.apache.hadoop.dfs.$Proxy0.getProtocolVersion(Unknown > > Source) > > >>> at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:269) > > >>> at org.apache.hadoop.dfs.DFSClient.createNamenode(DFSClient.java > > :147) > > >>> at org.apache.hadoop.dfs.DFSClient.<init>(DFSClient.java:161) > > >>> at > > >>> org.apache.hadoop.dfs.DistributedFileSystem.initialize( > > DistributedFileSystem.java:65) > > >>> at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:159) > > >>> at org.apache.hadoop.fs.FileSystem.getNamed(FileSystem.java:118) > > >>> at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:90) > > >>> at org.apache.hadoop.mapred.JobTracker.<init>(JobTracker.java > :683) > > >>> at > > >>> org.apache.hadoop.mapred.JobTracker.startTracker(JobTracker.java > :120) > > >>> at org.apache.hadoop.mapred.JobTracker.main(JobTracker.java > :2052) > > >>> 2008-01-02 16:25:42,931 INFO org.apache.hadoop.ipc.Server: IPC > Server > > >>> handler 5 on 54311, call getFilesystemName() from 127.0.0.1:49283: > > >>> error: > > >>> org.apache.hadoop.mapred.JobTracker$IllegalStateException:FileSystem > > >>> object > > >>> not available yet > > >>> org.apache.hadoop.mapred.JobTracker$IllegalStateException:FileSystem > > >>> object > > >>> not available yet > > >>> at > > >>> org.apache.hadoop.mapred.JobTracker.getFilesystemName( > JobTracker.java > > :1475) > > >>> at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source) > > >>> at > > >>> sun.reflect.DelegatingMethodAccessorImpl.invoke( > > DelegatingMethodAccessorImpl.java:25) > > >>> at java.lang.reflect.Method.invoke(Method.java:585) > > >>> at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:379) > > >>> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:596) > > >>> 2008-01-02 16:25:47,942 INFO org.apache.hadoop.ipc.Server: IPC > Server > > >>> handler 6 on 54311, call getFilesystemName() from 127.0.0.1:49293: > > >>> error: > > >>> org.apache.hadoop.mapred.JobTracker$IllegalStateException:FileSystem > > >>> object > > >>> not available yet > > >>> org.apache.hadoop.mapred.JobTracker$IllegalStateException:FileSystem > > >>> object > > >>> not available yet > > >>> at > > >>> org.apache.hadoop.mapred.JobTracker.getFilesystemName( > JobTracker.java > > :1475) > > >>> at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source) > > >>> at > > >>> sun.reflect.DelegatingMethodAccessorImpl.invoke( > > DelegatingMethodAccessorImpl.java:25) > > >>> at java.lang.reflect.Method.invoke(Method.java:585) > > >>> at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:379) > > >>> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:596) > > >>> 2008-01-02 16:25:52,061 INFO org.apache.hadoop.ipc.Client: Retrying > > >>> connect > > >>> to server: localhost/127.0.0.1:54310. Already tried 1 time(s). > > >>> 2008-01-02 16:25:52,951 INFO org.apache.hadoop.ipc.Server: IPC > Server > > >>> handler 7 on 54311, call getFilesystemName() from 127.0.0.1:49304: > > >>> error: > > >>> org.apache.hadoop.mapred.JobTracker$IllegalStateException:FileSystem > > >>> object > > >>> not available yet > > >>> org.apache.hadoop.mapred.JobTracker$IllegalStateException:FileSystem > > >>> object > > >>> not available yet > > >>> at > > >>> org.apache.hadoop.mapred.JobTracker.getFilesystemName( > JobTracker.java > > :1475) > > >>> at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source) > > >>> at > > >>> sun.reflect.DelegatingMethodAccessorImpl.invoke( > > DelegatingMethodAccessorImpl.java:25) > > >>> at java.lang.reflect.Method.invoke(Method.java:585) > > >>> at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:379) > > >>> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:596) > > >>> 2008-01-02 16:25:53,070 INFO org.apache.hadoop.ipc.Client: Retrying > > >>> connect > > >>> to server: localhost/127.0.0.1:54310. Already tried 2 time(s). > > >>> 2008-01-02 16:25:54,080 INFO org.apache.hadoop.ipc.Client: Retrying > > >>> connect > > >>> to server: localhost/127.0.0.1:54310. Already tried 3 time(s). > > >>> 2008-01-02 16:25:55,090 INFO org.apache.hadoop.ipc.Client: Retrying > > >>> connect > > >>> to server: localhost/127.0.0.1:54310. Already tried 4 time(s). > > >>> 2008-01-02 16:25:56,100 INFO org.apache.hadoop.ipc.Client: Retrying > > >>> connect > > >>> to server: localhost/127.0.0.1:54310. Already tried 5 time(s). > > >>> 2008-01-02 16:25:56,281 INFO org.apache.hadoop.mapred.JobTracker: > > >>> SHUTDOWN_MSG: > > >>> /************************************************************ > > >>> SHUTDOWN_MSG: Shutting down JobTracker at master/172.16.0.25 > > >>> ************************************************************/ > > >>> > > >>> Tasktracker_master.log > > >>> 2008-01-02 16:26:14,080 INFO org.apache.hadoop.ipc.Client: Retrying > > >>> connect > > >>> to server: localhost/127.0.0.1:54311. Already tried 2 time(s). > > >>> 2008-01-02 16:28:34,510 INFO org.apache.hadoop.mapred.TaskTracker: > > >>> STARTUP_MSG: > > >>> /************************************************************ > > >>> STARTUP_MSG: Starting TaskTracker > > >>> STARTUP_MSG: host = master/172.16.0.25 > > >>> STARTUP_MSG: args = [] > > >>> ************************************************************/ > > >>> 2008-01-02 16:28:34,739 INFO org.mortbay.util.Credential: Checking > > >>> Resource > > >>> aliases > > >>> 2008-01-02 16:28:34,827 INFO org.mortbay.http.HttpServer: Version > > >>> Jetty/5.1.4 > > >>> 2008-01-02 16:28:35,281 INFO org.mortbay.util.Container: Started > > >>> [EMAIL PROTECTED] > > >>> 2008-01-02 16:28:35,332 INFO org.mortbay.util.Container: Started > > >>> WebApplicationContext[/,/] > > >>> 2008-01-02 16:28:35,332 INFO org.mortbay.util.Container: Started > > >>> HttpContext[/logs,/logs] > > >>> 2008-01-02 16:28:35,332 INFO org.mortbay.util.Container: Started > > >>> HttpContext[/static,/static] > > >>> 2008-01-02 16:28:35,336 INFO org.mortbay.http.SocketListener: > Started > > >>> SocketListener on 0.0.0.0:50060 > > >>> 2008-01-02 16:28:35,336 INFO org.mortbay.util.Container: Started > > >>> [EMAIL PROTECTED] > > >>> 2008-01-02 16:28:35,383 INFO > org.apache.hadoop.metrics.jvm.JvmMetrics: > > >>> Initializing JVM Metrics with processName=TaskTracker, sessionId= > > >>> 2008-01-02 16:28:35,402 INFO org.apache.hadoop.mapred.TaskTracker: > > >>> TaskTracker up at: /127.0.0.1:49599 > > >>> 2008-01-02 16:28:35,402 INFO org.apache.hadoop.mapred.TaskTracker: > > >>> Starting > > >>> tracker tracker_master:/127.0.0.1:49599 > > >>> 2008-01-02 16:28:35,406 INFO org.apache.hadoop.ipc.Server: IPC > Server > > >>> listener on 49599: starting > > >>> 2008-01-02 16:28:35,406 INFO org.apache.hadoop.ipc.Server: IPC > Server > > >>> handler 0 on 49599: starting > > >>> 2008-01-02 16:28:35,406 INFO org.apache.hadoop.ipc.Server: IPC > Server > > >>> handler 1 on 49599: starting > > >>> 2008-01-02 16:28:35,490 INFO org.apache.hadoop.mapred.TaskTracker: > > >>> Starting > > >>> thread: Map-events fetcher for all reduce tasks on > > >>> tracker_master:/127.0.0.1:49599 > > >>> 2008-01-02 16:28:35,500 INFO org.apache.hadoop.mapred.TaskTracker: > > Lost > > >>> connection to JobTracker [localhost/127.0.0.1:54311]. Retrying... > > >>> org.apache.hadoop.ipc.RemoteException: > > >>> org.apache.hadoop.mapred.JobTracker$IllegalStateException:FileSystem > > >>> object > > >>> not available yet > > >>> at > > >>> org.apache.hadoop.mapred.JobTracker.getFilesystemName( > JobTracker.java > > :1475) > > >>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > > >>> at > > >>> sun.reflect.NativeMethodAccessorImpl.invoke( > > NativeMethodAccessorImpl.java:39) > > >>> at > > >>> sun.reflect.DelegatingMethodAccessorImpl.invoke( > > DelegatingMethodAccessorImpl.java:25) > > >>> at java.lang.reflect.Method.invoke(Method.java:585) > > >>> at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:379) > > >>> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:596) > > >>> > > >>> at org.apache.hadoop.ipc.Client.call(Client.java:482) > > >>> at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:184) > > >>> at org.apache.hadoop.mapred.$Proxy0.getFilesystemName(Unknown > > Source) > > >>> at > > >>> org.apache.hadoop.mapred.TaskTracker.offerService(TaskTracker.java > > :773) > > >>> at org.apache.hadoop.mapred.TaskTracker.run(TaskTracker.java > :1179) > > >>> at org.apache.hadoop.mapred.TaskTracker.main(TaskTracker.java > > :1880) > > >>> ******************************************* > > >>> > > >>> Please help me to resolve the same. > > >>> > > >>> > > >>> Khalil Honsali wrote: > > >>> > > >>>>Hi, > > >>>> > > >>>>I think you need to post more information, for example an excerpt of > > the > > >>>>failing datanode log. Also, please clarify the issue of > connectivity: > > >>>>- are you able to ssh passwordless (from master to slave, slave to > > master, > > >>>>slave to slave, master to master), you shouldn't be entering passwrd > > >>>>everytime... > > >>>>- are you able to telnet (not necessary but preferred) > > >>>>- have you verified the ports as RUNNING on using netstat command? > > >>>> > > >>>>besides, the tasktracker starts ok but not the datanode? > > >>>> > > >>>>K. Honsali > > >>>> > > >>>>On 02/01/2008, Dhaya007 <[EMAIL PROTECTED]> wrote: > > >>>> > > >>>>> > > >>>>>I am new to hadoop if any think wrong please correct me .... > > >>>>>I Have configured a single/multi node cluster using following link > > >>>>> > > >>>>> > > > http://www.michael-noll.com/wiki/Running_Hadoop_On_Ubuntu_Linux_%28Single-Node_Cluster%29 > > >>>>>. > > >>>>>I have followed the link but i am not able to start the haoop in > > multi > > >>>>>node > > >>>>>environment > > >>>>>The problems i am facing are as Follows: > > >>>>>1.I have configured master and slave nodes with ssh less pharase if > > try > > >>>>>to > > >>>>>run the start-dfs.sh it prompt the password for master:slave > > machines.(I > > >>>>>have copied the .ssh/id_rsa.pub key of master in to slaves > > autherized_key > > >>>>>file) > > >>>>> > > >>>>>2.After giving password datanode,namenode,jobtracker,tasktraker > > started > > >>>>>successfully in master but datanode is started in slave. > > >>>>> > > >>>>> > > >>>>>3.Some time step 2 works and some time it says that permission > > denied. > > >>>>> > > >>>>>4.I have checked the log file in the slave for datanode it says > that > > >>>>>incompatible node, then i have formated the slave, master and start > > the > > >>>>>dfs > > >>>>>by start-dfs.sh still i am getting the error > > >>>>> > > >>>>> > > >>>>>The host entry in etc/hosts are both master/slave > > >>>>>master > > >>>>>slave > > >>>>>conf/masters > > >>>>>master > > >>>>>conf/slaves > > >>>>>master > > >>>>>slave > > >>>>> > > >>>>>The hadoop-site.xml for both master/slave > > >>>>><?xml version="1.0"?> > > >>>>><?xml-stylesheet type="text/xsl" href="configuration.xsl"?> > > >>>>> > > >>>>><!-- Put site-specific property overrides in this file. --> > > >>>>> > > >>>>><configuration> > > >>>>><property> > > >>>>> <name>hadoop.tmp.dir</name> > > >>>>> <value>/home/hdusr/hadoop-${user.name}</value> > > >>>>> <description>A base for other temporary > directories.</description> > > >>>>></property> > > >>>>> > > >>>>><property> > > >>>>> <name>fs.default.name</name> > > >>>>> <value>hdfs://master:54310</value> > > >>>>> <description>The name of the default file system. A URI whose > > >>>>> scheme and authority determine the FileSystem > implementation. The > > >>>>> uri's scheme determines the config property (fs.SCHEME.impl) > naming > > >>>>> the FileSystem implementation class. The uri's authority is used > > to > > >>>>> determine the host, port, etc. for a filesystem.</description> > > >>>>></property> > > >>>>> > > >>>>><property> > > >>>>> <name>mapred.job.tracker</name> > > >>>>> <value>master:54311</value> > > >>>>> <description>The host and port that the MapReduce job tracker > runs > > >>>>> at. If "local", then jobs are run in-process as a single map > > >>>>> and reduce task. > > >>>>> </description> > > >>>>></property> > > >>>>> > > >>>>><property> > > >>>>> <name>dfs.replication</name> > > >>>>> <value>2</value> > > >>>>> <description>Default block replication. > > >>>>> The actual number of replications can be specified when the file > is > > >>>>>created. > > >>>>> The default is used if replication is not specified in create > time. > > >>>>> </description> > > >>>>></property> > > >>>>> > > >>>>><property> > > >>>>> <name>mapred.map.tasks</name> > > >>>>> <value>20</value> > > >>>>> <description>As a rule of thumb, use 10x the number of slaves ( > i.e > > ., > > >>>>>number of tasktrackers). > > >>>>> </description> > > >>>>></property> > > >>>>> > > >>>>><property> > > >>>>> <name>mapred.reduce.tasks</name> > > >>>>> <value>4</value> > > >>>>> <description>As a rule of thumb, use 2x the number of slave > > >>>>> processors > > >>>>>(i.e., number of tasktrackers). > > >>>>> </description> > > >>>>></property> > > >>>>></configuration> > > >>>>> > > >>>>>Please help me to reslove the same. Or else provide any other > > tutorial > > >>>>>for > > >>>>>multi node cluster setup.I am egarly waiting for the tutorials. > > >>>>> > > >>>>> > > >>>>>Thanks > > >>>>> > > >>>>>-- > > >>>>>View this message in context: > > >>>>> > > > http://www.nabble.com/Not-able-to-start-Data-Node-tp14573889p14573889.html > > >>>>>Sent from the Hadoop Users mailing list archive at Nabble.com. > > >>>>> > > >>>>> > > >>>> > > >>>> > > >>> > > >> > > >> > > >> > > > > > > > > > > -- > > View this message in context: > > > http://www.nabble.com/Not-able-to-start-Data-Node-tp14573889p14594256.html > > Sent from the Hadoop Users mailing list archive at Nabble.com. > > > > > -- --------------------------------------------------------- شهر مبارك كريم كل عام و أنتم بخير --------------------------------------------------------- Honsali Khalil − 本査理 カリル Academic>Japan>NIT>Grad. Sc. Eng.>Dept. CS>Matsuo&Tsumura Lab. http://www.matlab.nitech.ac.jp/~k-hon/ +81 (zero-)eight-zero 5134 8119 [EMAIL PROTECTED] (instant reply mail)
