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

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

Uroš Bojanić created SPARK-58712:
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             Summary: 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


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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