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 >>> >>> >>> >> >> > > >
