Cheng Lian created SPARK-13841:
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Summary: Remove Dataset.collectRows() and Dataset.takeRows()
Key: SPARK-13841
URL: https://issues.apache.org/jira/browse/SPARK-13841
Project: Spark
Issue Type: Sub-task
Components: SQL
Affects Versions: 2.0.0
Reporter: Cheng Lian
Assignee: Cheng Lian
These two methods were added because the original {{DataFrame.collect()}} and
{{DataFrame.take()}} methods became methods of {{Dataset\[T\]}} after merging
DataFrame and Dataset API. However, Java doesn't allow returning generic array,
and thus erased their return type to {{Object}}. This breaks compilation of
Java code. After discussion, we decided to simply resort to existing
{{collectAsList()}} and {{takeAsList()}} methods and remove these two extra
specialized ones.
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