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https://issues.apache.org/jira/browse/FLINK-3191?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15071095#comment-15071095
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Chesnay Schepler commented on FLINK-3191:
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in newer Flink versions "print()" serves the same purpose as "execute()".
> WordCount without fileOutput - execute is missing
> -------------------------------------------------
>
> Key: FLINK-3191
> URL: https://issues.apache.org/jira/browse/FLINK-3191
> Project: Flink
> Issue Type: Bug
> Components: Examples
> Reporter: Simone Robutti
> Priority: Trivial
> Labels: newbie
>
> The WordCount example, if there's no file output specified, is supposed to
> print the result to the console. In the branch that calls the print, the
> execute is missing and therefore the computation doesn't start. Adding the
> execute to the "else" branch does fix the problem. I assume that the execute
> should be after the if/else statement.
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