I am trying to install Hadoop by following the instruction from http://alans.se/blog/2010/hadoop-hbase-cygwin-windows-7-x64/.
1. I can not open http://localhost:9100 or http://localhost:9101 after I run "bin/start-dfs.sh" and "bin/start-mapred.sh" without any error message being printed. 2. I shutdown cygwin shell. 3. I start another cygwin shell, run "bin/start-dfs.sh" and get the following message from the shell. $ bin/start-dfs.sh starting namenode, logging to C:\cygwin\hadoop\0.21.0\logs/hadoop-Jim-namenode-Jim-PC.out localhost: datanode running as process 6908. Stop it first. localhost: secondarynamenode running as process 6156. Stop it first. Log message in C:\cygwin\hadoop\0.21.0\logs/hadoop-Jim-namenode-Jim-PC.out are listed as below: 2011-01-24 23:10:11,202 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: NameNode up at: 127.0.0.1/127.0.0.1:9100 2011-01-24 23:10:36,187 INFO org.apache.hadoop.ipc.Server: IPC Server listener on 9100: readAndProcess threw exception java.io.IOException: Unable to read authentication method. Count of bytes read: 0 java.io.IOException: Unable to read authentication method at org.apache.hadoop.ipc.Server$Connection.readAndProcess(Server.java:1079) at org.apache.hadoop.ipc.Server$Listener.doRead(Server.java:525) at org.apache.hadoop.ipc.Server$Listener$Reader.run(Server.java:332) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:619) .... 2011-01-24 23:41:47,815 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Registered FSNamesystemStatusMBean 2011-01-24 23:41:47,915 ERROR org.apache.hadoop.hdfs.server.namenode.FSNamesystem: FSNamesystem initialization failed. java.io.IOException: NameNode is not formatted. at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:434) at org.apache.hadoop.hdfs.server.namenode.FSDirectory.loadFSImage(FSDirectory.java:110) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.initialize(FSNamesystem.java:291) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:270) at org.apache.hadoop.hdfs.server.namenode.NameNode.loadNamesystem(NameNode.java:271) at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:303) at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:433) at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:421) at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1359) at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1368) I am running Window Vista, JDK 1.6. I appreciate your help. Jim
