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https://issues.apache.org/jira/browse/FLINK-3560?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15193047#comment-15193047
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ASF GitHub Bot commented on FLINK-3560:
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Github user uce commented on the pull request:
https://github.com/apache/flink/pull/1752#issuecomment-196242519
I think Stephan has a point and we should maybe not encourage usage of
`ProgramDescription` in the examples, because we advertise the simple
main-method entry point in all the docs.
Other than that, I think it's a good idea to remove the unconditional usage
printing.
> Examples shouldn't always print usage statement
> -----------------------------------------------
>
> Key: FLINK-3560
> URL: https://issues.apache.org/jira/browse/FLINK-3560
> Project: Flink
> Issue Type: Improvement
> Components: Examples
> Affects Versions: 1.0.0
> Reporter: Till Rohrmann
> Assignee: Till Rohrmann
> Priority: Minor
>
> At the moment all our examples print a usage statement no matter whether the
> parameters have been provided or not. This can be confusing for people
> because an usage statement is usually only printed if one has specified a
> wrong parameter or if a parameter is missing.
> I propose to remove the unchecked printing of the usage statement.
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