i think you should check your configuration file in the conf folder and add the required entry in core-site.xml, mapred-site.xml and hdfs-site.xml for pseudo distributed mode you can refer: http://hadoop-tutorial.blogspot.com/2010/11/running-hadoop-in-pseudo-distributed.html for distributed mode you can refer: http://hadoop-tutorial.blogspot.com/2010/11/running-hadoop-in-distributed-mode.html
if you are using cloudera you can refer: http://cloudera-tutorial.blogspot.com/ if you have any problem please leave a comment -- -Thanks and Regards, Rahul Patodi Associate Software Engineer, Impetus Infotech (India) Private Limited, www.impetus.com Mob:09907074413 On Thu, Nov 25, 2010 at 10:23 AM, 祝美祺 <henhaozhume...@gmail.com> wrote: > Hi , > i am using 0.20.2.. when i try to start hadoop,the namenode ,datanode > works will ,but i can't submit jobs.i look at the logs ,and find > the error like: > > 2010-11-25 12:38:02,623 INFO org.apache.hadoop.ipc.Client: Retrying connect > to server: localhost/127.0.0.1:9000. Already tried 0 time(s). > 2010-11-25 12:38:03,626 INFO org.apache.hadoop.ipc.Client: Retrying connect > to server: localhost/127.0.0.1:9000. Already tried 1 time(s). > 2010-11-25 12:38:04,627 INFO org.apache.hadoop.ipc.Client: Retrying connect > to server: localhost/127.0.0.1:9000. Already tried 2 time(s). > 2010-11-25 12:38:05,629 INFO org.apache.hadoop.ipc.Client: Retrying connect > to server: localhost/127.0.0.1:9000. Already tried 3 time(s). > 2010-11-25 12:38:06,631 INFO org.apache.hadoop.ipc.Client: Retrying connect > to server: localhost/127.0.0.1:9000. Already tried 4 time(s). > 2010-11-25 12:38:07,636 INFO org.apache.hadoop.ipc.Client: Retrying connect > to server: localhost/127.0.0.1:9000. Already tried 5 time(s). > 2010-11-25 12:38:08,641 INFO org.apache.hadoop.ipc.Client: Retrying connect > to server: localhost/127.0.0.1:9000. Already tried 6 time(s). > 2010-11-25 12:38:09,644 INFO org.apache.hadoop.ipc.Client: Retrying connect > to server: localhost/127.0.0.1:9000. Already tried 7 time(s). > 2010-11-25 12:38:10,645 INFO org.apache.hadoop.ipc.Client: Retrying connect > to server: localhost/127.0.0.1:9000. Already tried 8 time(s). > 2010-11-25 12:38:11,649 INFO org.apache.hadoop.ipc.Client: Retrying connect > to server: localhost/127.0.0.1:9000. Already tried 9 time(s). > 2010-11-25 12:38:11,651 ERROR org.apache.hadoop.mapred.TaskTracker: Caught > exception: java.net.ConnectException: Call to localhost/127.0.0.1:9000failed > on connection exception: java.net.ConnectException: Connection > refused > at org.apache.hadoop.ipc.Client.wrapException(Client.java:767) > at org.apache.hadoop.ipc.Client.call(Client.java:743) > at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:220) > at $Proxy5.getProtocolVersion(Unknown Source) > at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:359) > at org.apache.hadoop.hdfs.DFSClient.createRPCNamenode(DFSClient.java:106) > at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:207) > at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:170) > at > org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:82) > at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:1378) > at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:66) > at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:1390) > at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:196) > at org.apache.hadoop.fs.Path.getFileSystem(Path.java:175) > at > org.apache.hadoop.mapred.TaskTracker.offerService(TaskTracker.java:1033) > at org.apache.hadoop.mapred.TaskTracker.run(TaskTracker.java:1720) > at org.apache.hadoop.mapred.TaskTracker.main(TaskTracker.java:2833) > Caused by: java.net.ConnectException: Connection refused > at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) > at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:592) > at > org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206) > at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:404) > at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:304) > at org.apache.hadoop.ipc.Client$Connection.access$1700(Client.java:176) > at org.apache.hadoop.ipc.Client.getConnection(Client.java:860) > at org.apache.hadoop.ipc.Client.call(Client.java:720) > ... 15 more > > Who can tell me how to solve this problem? > >
