Nick Dimiduk created SPARK-19615:
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Summary: Provide Dataset union convenience for divergent schema
Key: SPARK-19615
URL: https://issues.apache.org/jira/browse/SPARK-19615
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 2.1.0
Reporter: Nick Dimiduk
Priority: Minor
Creating a union DataFrame over two sources that have different schema
definitions is surprisingly complex. Provide a version of the union method that
will create a infer a target schema as the result of merging the sources.
Automatically add extend either side with {{null}} columns for any missing
columns that are nullable.
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