Hi, Thanks for your reply..
In browser, http://localhost:50030/jobtracker.jsp is opening fine but http://localhost:50060/ is not. Since jobtracker is running, so I'm assuming localhost is reachable.. am I wrong?? Regards Siddharth On Sun, Oct 10, 2010 at 8:24 PM, Shi Yu <sh...@uchicago.edu> wrote: > Hi. Were you trying hadoop on your own computer or on a cluster? My guess > you were trying on your own computer. I once observed the same problem on my > laptop when I switched from wireless to fixed line connection, since the IP > address was changed but for some reason the configuration was not updated. > After restart the network service, the problem was fixed. The second > replication error is relevant to the first one because apparently the data > node is not running. So, you'd better double check the network connection of > the machine (make sure the "localhost" in your configuration file is > reachable). > > Shi > > > On 2010-10-10 9:21, siddharth raghuvanshi wrote: > >> Hi Shi, >> >> I am a beginner in Hadoop. I have given the following value in >> core-site.xml >> <name>hadoop.tmp.dir</name> >> <value>/users/user/hadoop-datastore/hadoop</value> >> >> >> <name>fs.default.name</name> >> <value>hdfs://localhost:54310</value> >> How will we check whether the host machine is reachable or not? >> >> Also, in mapred-site.xml, I have given >> <name>mapred.job.tracker</name> >> <value>localhost:54311</value> >> >> >> Please check whether these values are correct or not, if not correct what >> should I do? >> >> Waiting for your reply >> Regards >> Siddharth >> >> >> >> On Sat, Oct 9, 2010 at 11:47 PM, Shi Yu<sh...@uchicago.edu> wrote: >> >> >> >>> I suggest you change the hadoop.tmp.dir value in hadoop-site.xml >>> (0.19.x) >>> and reformat, restart it. Also double check the host machine in >>> fs.default.name and mapred.job.tracker is reachable or not. >>> >>> Shi >>> >>> >>> On 2010-10-9 12:57, siddharth raghuvanshi wrote: >>> >>> >>> >>>> Hi, >>>> I am also getting the following error. Please tell me whether this error >>>> is >>>> related to the previous error which I asked an hour before or this is a >>>> separate error... >>>> >>>> [u...@cs-sy-249 hadoop]$ bin/hadoop dfs -copyFromLocal >>>> /users/user/Desktop/test_data/ >>>> gutenberg >>>> >>>> 10/10/09 23:22:15 WARN hdfs.DFSClient: DataStreamer Exception: >>>> org.apache.hadoop.ipc.RemoteException: java.io.IOException: File >>>> /user/user/gutenberg/pg4300.txt could only be replicated to 0 nodes, >>>> instead >>>> of 1 >>>> at >>>> >>>> >>>> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1310) >>>> >>>> at >>>> >>>> >>>> org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:469) >>>> >>>> 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.ipc.RPC$Server.call(RPC.java:512) >>>> >>>> at >>>> org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:968) >>>> >>>> at >>>> org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:964) >>>> >>>> at java.security.AccessController.doPrivileged(Native >>>> Method) >>>> at >>>> javax.security.auth.Subject.doAs(Subject.java:396) >>>> >>>> at >>>> org.apache.hadoop.ipc.Server$Handler.run(Server.java:962) >>>> >>>> >>>> at org.apache.hadoop.ipc.Client.call(Client.java:817) >>>> at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:221) >>>> 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:3000) >>>> >>>> at >>>> >>>> >>>> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.nextBlockOutputStream(DFSClient.java:2881) >>>> >>>> at >>>> >>>> >>>> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.access$1900(DFSClient.java:2139) >>>> at >>>> >>>> >>>> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:2329) >>>> >>>> >>>> 10/10/09 23:22:15 WARN hdfs.DFSClient: Error Recovery for block null bad >>>> datanode[0] nodes == >>>> null >>>> >>>> 10/10/09 23:22:15 WARN hdfs.DFSClient: Could not get block locations. >>>> Source >>>> file "/user/user/gutenberg/pg4300.txt" - >>>> Aborting... >>>> copyFromLocal: java.io.IOException: File /user/user/gutenberg/pg4300.txt >>>> could only be replicated to 0 nodes, instead of >>>> 1 >>>> 10/10/09 23:22:15 ERROR hdfs.DFSClient: Exception closing file >>>> /user/user/gutenberg/pg4300.txt : org.apache.hadoop.ipc.RemoteException: >>>> java.io.IOException: File /user/user/gutenberg/pg4300.txt could only be >>>> replicated to 0 nodes, instead of 1 >>>> at >>>> >>>> >>>> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1310) >>>> >>>> at >>>> >>>> >>>> org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:469) >>>> >>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native >>>> Method) >>>> at >>>> >>>> >>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) >>>> >>>> at >>>> >>>> >>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) >>>> >>>> at >>>> java.lang.reflect.Method.invoke(Method.java:597) >>>> >>>> at >>>> org.apache.hadoop.ipc.RPC$Server.call(RPC.java:512) >>>> >>>> at >>>> org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:968) >>>> >>>> at >>>> org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:964) >>>> >>>> at java.security.AccessController.doPrivileged(Native >>>> Method) >>>> at >>>> javax.security.auth.Subject.doAs(Subject.java:396) >>>> >>>> at >>>> org.apache.hadoop.ipc.Server$Handler.run(Server.java:962) >>>> >>>> >>>> org.apache.hadoop.ipc.RemoteException: java.io.IOException: File >>>> /user/user/gutenberg/pg4300.txt could only be replicated to 0 nodes, >>>> instead >>>> of 1 >>>> at >>>> >>>> >>>> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1310) >>>> >>>> at >>>> >>>> >>>> org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:469) >>>> >>>> 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.ipc.RPC$Server.call(RPC.java:512) >>>> at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:968) >>>> at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:964) >>>> at java.security.AccessController.doPrivileged(Native Method) >>>> at javax.security.auth.Subject.doAs(Subject.java:396) >>>> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:962) >>>> >>>> at org.apache.hadoop.ipc.Client.call(Client.java:817) >>>> at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:221) >>>> 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:3000) >>>> at >>>> >>>> >>>> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.nextBlockOutputStream(DFSClient.java:2881) >>>> at >>>> >>>> >>>> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.access$1900(DFSClient.java:2139) >>>> at >>>> >>>> >>>> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:2329) >>>> [u...@cs-sy-249 hadoop]$ >>>> >>>> >>>> Regards >>>> Siddharth >>>> >>>> >>>> >>>> >>>> On Sat, Oct 9, 2010 at 10:39 PM, siddharth raghuvanshi< >>>> track009.siddha...@gmail.com> wrote: >>>> >>>> >>>> >>>> >>>> >>>>> Hi, >>>>> >>>>> When I am running the following command in Mandriva Linux >>>>> hadoop namenode -format >>>>> >>>>> I am getting the following error: >>>>> >>>>> 10/10/09 22:32:07 INFO namenode.NameNode: STARTUP_MSG: >>>>> /************************************************************ >>>>> STARTUP_MSG: Starting NameNode >>>>> STARTUP_MSG: host = java.net.UnknownHostException: >>>>> cs-sy-249.cse.iitkgp.ernet.in: cs-sy-249.cse.iitkgp.ernet.in >>>>> STARTUP_MSG: args = [-format] >>>>> STARTUP_MSG: version = 0.20.2+320 >>>>> STARTUP_MSG: build = -r 9b72d268a0b590b4fd7d13aca17c1c453f8bc957; >>>>> compiled by 'root' on Mon Jun 28 19:13:09 EDT 2010 >>>>> ************************************************************/ >>>>> Re-format filesystem in >>>>> /users/user/hadoop-datastore/hadoop-user/dfs/name >>>>> ? >>>>> (Y or N) Y >>>>> 10/10/09 22:32:11 INFO namenode.FSNamesystem: fsOwner=user,user >>>>> 10/10/09 22:32:11 INFO namenode.FSNamesystem: supergroup=supergroup >>>>> 10/10/09 22:32:11 INFO namenode.FSNamesystem: isPermissionEnabled=true >>>>> 10/10/09 22:32:12 INFO metrics.MetricsUtil: Unable to obtain hostName >>>>> java.net.UnknownHostException: cs-sy-249.cse.iitkgp.ernet.in: >>>>> cs-sy-249.cse.iitkgp.ernet.in >>>>> at java.net.InetAddress.getLocalHost(InetAddress.java:1353) >>>>> at >>>>> org.apache.hadoop.metrics.MetricsUtil.getHostName(MetricsUtil.java:91) >>>>> at >>>>> org.apache.hadoop.metrics.MetricsUtil.createRecord(MetricsUtil.java:80) >>>>> at >>>>> >>>>> >>>>> org.apache.hadoop.hdfs.server.namenode.FSDirectory.initialize(FSDirectory.java:78) >>>>> at >>>>> >>>>> >>>>> org.apache.hadoop.hdfs.server.namenode.FSDirectory.<init>(FSDirectory.java:73) >>>>> at >>>>> >>>>> >>>>> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:383) >>>>> at >>>>> >>>>> org.apache.hadoop.hdfs.server.namenode.NameNode.format(NameNode.java:904) >>>>> at >>>>> >>>>> >>>>> org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:998) >>>>> at >>>>> >>>>> org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1015) >>>>> 10/10/09 22:32:12 INFO common.Storage: Image file of size 94 saved in 0 >>>>> seconds. >>>>> 10/10/09 22:32:12 INFO common.Storage: Storage directory >>>>> /users/user/hadoop-datastore/hadoop-user/dfs/name has been successfully >>>>> formatted. >>>>> 10/10/09 22:32:12 INFO namenode.NameNode: SHUTDOWN_MSG: >>>>> /************************************************************ >>>>> SHUTDOWN_MSG: Shutting down NameNode at java.net.UnknownHostException: >>>>> cs-sy-249.cse.iitkgp.ernet.in: cs-sy-249.cse.iitkgp.ernet.in >>>>> ************************************************************/ >>>>> >>>>> Please help me in solving this problem. >>>>> >>>>> Thanks >>>>> Regards >>>>> Siddharth >>>>> >>>>> >>>>> >>>>> >>>>> >>>> >>>> >>>> >>> >>> >>> >>> >> >> > > > -- > Postdoctoral Scholar > Institute for Genomics and Systems Biology > Department of Medicine, the University of Chicago > Knapp Center for Biomedical Discovery > 900 E. 57th St. Room 10148 > Chicago, IL 60637, US > Tel: 773-702-6799 > >
