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https://issues.apache.org/jira/browse/GIRAPH-136?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jakob Homan updated GIRAPH-136:
-------------------------------

    Attachment: GIRAPH-136.patch

Patch that chastises no-arg invocations thusly:
{noformat}tardis s003 ~/repos/giraph> bin/giraph
Usage: giraph [-D<Hadoop property>] <jar containing vertex> <parameters to jar>
At a minimum one must provide a path to the jar containing the vertex to be 
executed.{noformat}

I didn't enumerate all the parameters since that would be duplicating 
information provided by GiraphRunner.
                
> Erorr message for bin/giraph could be improved
> ----------------------------------------------
>
>                 Key: GIRAPH-136
>                 URL: https://issues.apache.org/jira/browse/GIRAPH-136
>             Project: Giraph
>          Issue Type: Improvement
>    Affects Versions: 0.1.0
>            Reporter: Jakob Homan
>             Fix For: 0.2.0
>
>         Attachments: GIRAPH-136.patch
>
>
> Currently when one just runs bin/giraph without the required jar, the message 
> isn't very helpful:
> {noformat}[tardis giraph-0.1]$ bin/giraph
> Can't find user jar to execute.{noformat}
> It would be better to have a more in-depth message explaining Giraph and what 
> is expected.

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