[jira] [Commented] (SPARK-58712) Fix incorrect usage strings in four examples

["Uroš Bojanić (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-58712?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18103666#comment-18103666 ] 

Uroš Bojanić commented on SPARK-58712:
--------------------------------------

In progress: https://github.com/apache/spark/pull/57930.

> Fix incorrect usage strings in four examples
> --------------------------------------------
>
>                 Key: SPARK-58712
>                 URL: https://issues.apache.org/jira/browse/SPARK-58712
>             Project: Spark
>          Issue Type: Bug
>          Components: Examples
>    Affects Versions: 4.3.0
>            Reporter: Uroš Bojanić
>            Priority: Major
>              Labels: pull-request-available
>
> Four usage strings disagree with the code around them.
> DirectKafkaWordCount and DirectKerberizedKafkaWordCount document "<brokers> <topics>" in the class comment, but both require three arguments: the arity check is args.length < 3, the arguments are destructured as brokers, groupId and topics, the runtime usage message already prints the three argument form, and the comment itself documents <groupId> on the following line. SPARK-27973 corrected the runtime message for the first example but left the comment behind.
> SkewedGroupByTest documents "Usage: GroupByTest", naming a different example that also exists, so copying the line runs the wrong job.
> JavaRecoverableNetworkWordCount prints "You arguments were"; its Scala counterpart already reads "Your arguments were".
> Comment and message text only.



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