[jira] [Created] (FLINK-3560) Examples shouldn't always print usage statement

[Shang Yuanchun (Jira)]

Till Rohrmann created FLINK-3560:
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             Summary: 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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