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Posted to common-dev@hadoop.apache.org by "Doug Cutting (JIRA)" <ji...@apache.org> on 2006/02/10 17:31:56 UTC
[jira] Resolved: (HADOOP-31) Stipulate main class in a job jar when
using 'hadoop jar JARNAME'
[ http://issues.apache.org/jira/browse/HADOOP-31?page=all ]
Doug Cutting resolved HADOOP-31:
--------------------------------
Resolution: Won't Fix
Closing at reporter's request.
> Stipulate main class in a job jar when using 'hadoop jar JARNAME'
> -----------------------------------------------------------------
>
> Key: HADOOP-31
> URL: http://issues.apache.org/jira/browse/HADOOP-31
> Project: Hadoop
> Type: New Feature
> Reporter: stack@archive.org
> Priority: Minor
>
> One use case I forsee is building one jar but using this one jar running multiple jobs: E.g. A single nutch job jar would now be used to do indexing job, later same jar is used to do dedup, etc. Currently, the recently added hadoop 'jar' option just takes the jar name then looks in the jar MANIFEST.MF for the Main-Class, failing if not present. This is grand but for the scenario above, it means I have to create a jar per job I want to run -- each with a different MANIFEST.MF#Main-Class entry.
> Can we pass the Main-Class on the hadoop command-line as an (optional) argument to 'hadoop jar JAR_NAME'? (I can make a patch if wanted).
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