FAQ
Dear All,I have been trying to configure hadoop on a cluster but when i try to issue any comand regarding the hdfs like mkdir I get that the it is trying to connect to the server and after that it fails. I issued to commands the format and the mkdir but the fail please help and advise.RegardsAhmed

ahmednagy@cannonau:~/HadoopStandalone/hadoop-0.21.0/bin$ ./hadoop namenode -formatDEPRECATED: Use of this script to execute hdfs command is deprecated.Instead use the hdfs command for it.
11/02/04 12:04:03 INFO namenode.NameNode: STARTUP_MSG:/************************************************************STARTUP_MSG: Starting NameNodeSTARTUP_MSG: host = cannonau.isti.cnr.it/146.48.82.190STARTUP_MSG: args = [-format]STARTUP_MSG: version = 0.21.0STARTUP_MSG: classpath = /home/ahmednagy/HadoopStandalone/hadoop-0.21.0/bin/../conf:/usr/lib/jvm/java-6-sun/lib/tools.jar:/home/ahmednagy/HadoopStandalone/hadoop-0.21.0/bin/..:/home/ahmednagy/HadoopStandalone/hadoop-0.21.0/bin/../hadoop-common-0.21.0.jar:/home/ahmednagy/HadoopStandalone/hadoop-0.21.0/bin/../hadoop-common-test-0.21.0.jar:/home/ahmednagy/HadoopStandalone/hadoop-0.21.0/bin/../hadoop-hdfs-0.21.0.jar:/home/ahmednagy/HadoopStandalone/hadoop-0.21.0/bin/../hadoop-hdfs-0.21.0-sources.jar:/home/ahmednagy/HadoopStandalone/hadoop-0.21.0/bin/../hadoop-hdfs-ant-0.21.0.jar:/home/ahmednagy/HadoopStandalone/hadoop-0.21.0/bin/../hadoop-hdfs-test-0.

A long list of paths
STARTUP_MSG: build = https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.21 -r 985326; compiled by 'tomwhite' on Tue Aug 17 01:02:28 EDT 2010************************************************************/11/02/04 12:04:03 WARN common.Util: Path /tmp/mylocal should be specified as a URI in configuration files. Please update hdfs configuration.11/02/04 12:04:03 WARN common.Util: Path /tmp/mylocal should be specified as a URI in configuration files. Please update hdfs configuration.Re-format filesystem in /tmp/mylocal ? (Y or N) yFormat aborted in /tmp/mylocal11/02/04 12:04:14 INFO namenode.NameNode: SHUTDOWN_MSG:/************************************************************SHUTDOWN_MSG: Shutting down NameNode at cannonau.isti.cnr.it/146.48.82.190************************************************************/ahmednagy@cannonau:~/HadoopStandalone/hadoop-0.21.0/bin$ /hadoop dfs -mkdir input-bash: /hadoop: No such file or directoryahmednagy@cannonau:~/HadoopStandalone/had
oop-0.21.0/bin$ ./hadoop dfs -mkdir inputDEPRECATED: Use of this script to execute hdfs command is deprecated.Instead use the hdfs command for it.
11/02/04 12:04:30 INFO security.Groups: Group mapping impl=org.apache.hadoop.security.ShellBasedUnixGroupsMapping; cacheTimeout=30000011/02/04 12:04:31 WARN conf.Configuration: mapred.task.id is deprecated. Instead, use mapreduce.task.attempt.id11/02/04 12:04:32 INFO ipc.Client: Retrying connect to server: cannonau.isti.cnr.it/146.48.82.190:8020. Already tried 0 time(s).11/02/04 12:04:33 INFO ipc.Client: Retrying connect to server: cannonau.isti.cnr.it/146.48.82.190:8020. Already tried 1 time(s).11/02/04 12:04:34 INFO ipc.Client: Retrying connect to server: cannonau.isti.cnr.it/146.48.82.190:8020. Already tried 2 time(s).11/02/04 12:04:35 INFO ipc.Client: Retrying connect to server: cannonau.isti.cnr.it/146.48.82.190:8020. Already tried 3 time(s).11/02/04 12:04:36 INFO ipc.Client: Retrying connect to server: cannonau.isti.cnr.it/146.48.82.190:8020. Already tried 4 time(s).11/02/04 12:04:37 INFO ipc.Client: Retrying connect to server: cannonau.isti.cnr.it/146.48.82.190:8020. A
lready tried 5 time(s).11/02/04 12:04:38 INFO ipc.Client: Retrying connect to server: cannonau.isti.cnr.it/146.48.82.190:8020. Already tried 6 time(s).11/02/04 12:04:39 INFO ipc.Client: Retrying connect to server: cannonau.isti.cnr.it/146.48.82.190:8020. Already tried 7 time(s).11/02/04 12:04:40 INFO ipc.Client: Retrying connect to server: cannonau.isti.cnr.it/146.48.82.190:8020. Already tried 8 time(s).11/02/04 12:04:41 INFO ipc.Client: Retrying connect to server: cannonau.isti.cnr.it/146.48.82.190:8020. Already tried 9 time(s).Bad connection to FS. command aborted.ahmednagy@cannonau:~/HadoopStandalone/hadoop-0.21.0/bin$ Path /tmp/mylocal should be specified as a URI in configuration files. Please update hdfs configuration.-bash: Path: command not found


11/02/04 12:04:03 WARN common.Util: Path /tmp/mylocal should be specified as a URI in configuration files. Please update hdfs configuration.11/02/04 12:04:03 WARN common.Util: Path /tmp/mylocal should be specified as a URI in configuration files. Please update hdfs configuration.Re-format filesystem in /tmp/mylocal ? (Y or N) yFormat aborted in /tmp/mylocal11/02/04 12:04:14 INFO namenode.NameNode: SHUTDOWN_MSG:/************************************************************SHUTDOWN_MSG: Shutting down NameNode at cannonau.isti.cnr.it/146.48.82.190************************************************************/ahmednagy@cannonau:~/HadoopStandalone/hadoop-0.21.0/bin$ /hadoop dfs -mkdir input-bash: /hadoop: No such file or directoryahmednagy@cannonau:~/HadoopStandalone/hadoop-0.21.0/bin$ ./hadoop dfs -mkdir inputDEPRECATED: Use of this script to execute hdfs command is deprecated.Instead use the hdfs command for it.

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postedFeb 4, '11 at 11:31a
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