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From "chris (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-52) mapred input and output dirs must be absolute
Date Sat, 25 Mar 2006 00:04:11 GMT
    [ http://issues.apache.org/jira/browse/HADOOP-52?page=comments#action_12371823 ] 

chris commented on HADOOP-52:
-----------------------------

I just update to the lately, start all the namenode, datanode, jobtracker and tasktracker

run nutch command (crawl / readdb etc.), and jobtracker thrown exception,


060325 001911 Property 'file.separator' is \
060325 001911 Property 'java.vendor.url.bug' is http://java.sun.com/cgi-bin/bugr
eport.cgi
060325 001911 Property 'sun.io.unicode.encoding' is UnicodeLittle
060325 001911 Property 'sun.cpu.endian' is little
060325 001911 Property 'sun.desktop' is windows
060325 001911 Property 'sun.cpu.isalist' is
060325 001911 Version Jetty/5.1.4
060325 001911 Checking Resource aliases
060325 001912 Started org.mortbay.jetty.servlet.WebApplicationHandler@1d7fbfb
060325 001912 Started WebApplicationContext[/,/]
060325 001912 Started SocketListener on 0.0.0.0:50030
060325 001912 Started org.mortbay.jetty.Server@c88440
060325 001921 Server connection on port 50020 from 192.168.1.10: starting
060325 001927 Server connection on port 50020 from 192.168.1.11: starting
060325 001933 Server connection on port 50020 from 192.168.1.12: starting
060325 002240 parsing file:/D:/jobcall_trunk/hadoop/conf/hadoop-default.xml
060325 002240 parsing file:/D:/jobcall_trunk/hadoop/conf/mapred-default.xml
060325 002240 parsing file:/D:/jobcall_trunk/hadoop/conf/hadoop-site.xml
060325 002240 parsing file:/D:/jobcall_trunk/hadoop/conf/hadoop-default.xml
060325 002240 parsing file:/D:/jobcall_trunk/hadoop/conf/mapred-default.xml
060325 002240 parsing \tmp\hadoop\mapred\local\job_3dgnm3.xml\jobTracker
060325 002240 parsing file:/D:/jobcall_trunk/hadoop/conf/hadoop-site.xml
060325 002258 parsing file:/D:/jobcall_trunk/hadoop/conf/hadoop-default.xml
060325 002258 parsing file:/D:/jobcall_trunk/hadoop/conf/mapred-default.xml
060325 002258 parsing \tmp\hadoop\mapred\local\job_3dgnm3.xml\jobTracker
060325 002258 parsing file:/D:/jobcall_trunk/hadoop/conf/hadoop-site.xml
060325 002258 job init failed
java.io.IOException: No input directories specified in: Configuration: defaults:
 hadoop-default.xml , mapred-default.xml , \tmp\hadoop\mapred\local\job_3dgnm3.x
ml\jobTrackerfinal: hadoop-site.xml
        at org.apache.hadoop.mapred.InputFormatBase.listFiles(InputFormatBase.ja
va:90)
        at org.apache.hadoop.mapred.InputFormatBase.getSplits(InputFormatBase.ja
va:100)
        at org.apache.hadoop.mapred.JobInProgress.initTasks(JobInProgress.java:1
30)
        at org.apache.hadoop.mapred.JobTracker$JobInitThread.run(JobTracker.java
:204)
        at java.lang.Thread.run(Thread.java:595)
060325 002300 Server connection on port 50020 from 192.168.1.12: exiting


> mapred input and output dirs must be absolute
> ---------------------------------------------
>
>          Key: HADOOP-52
>          URL: http://issues.apache.org/jira/browse/HADOOP-52
>      Project: Hadoop
>         Type: Bug
>   Components: mapred
>     Versions: 0.1
>     Reporter: Doug Cutting
>     Assignee: Owen O'Malley
>      Fix For: 0.1
>  Attachments: cwd.patch, cwd2.patch, cwd3.patch
>
> DFS converts relative pathnames to be under /user/$USER.  But MapReduce jobs may be submitted
by a different user than is running the jobtracker and tasktracker.  Thus relative paths must
be resolved before a job is submitted, so that only absolute paths are seen on the job tracker
and tasktracker.  I think the simplest way to fix this is to make JobConf.setInputDir(), setOutputDir(),
etc. resolve relative pathnames. 

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