[jira] [Created] (BEAM-14320) Update programming-guide w/Java GroupByKey example

["Denise Case (Jira)" <ji...@apache.org>]

Denise Case created BEAM-14320:
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             Summary: Update programming-guide w/Java GroupByKey example
                 Key: BEAM-14320
                 URL: https://issues.apache.org/jira/browse/BEAM-14320
             Project: Beam
          Issue Type: Task
          Components: website
            Reporter: Denise Case


Minor addition to assist new users with a GroupByKey example in Java. Specifically:

Add the following content to provide a Java example at the end of section 4.2.2. GroupByKey.

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Using {{GroupByKey}} is straightforward:

{\{< highlight java >}}
// The input PCollection.
PCollection<KV<String, String>> mapped = ...;

// Apply GroupByKey to the PCollection mapped.
// Save the result as the PCollection reduced.
PCollection<KV<String, Iterable>> reduced =
mapped.apply(GroupByKey.<String, String>create());
{\{< /highlight >}}



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