Michael Malak created SPARK-10972:
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Summary: UDFs in SQL joins
Key: SPARK-10972
URL: https://issues.apache.org/jira/browse/SPARK-10972
Project: Spark
Issue Type: New Feature
Components: SQL
Affects Versions: 1.5.1
Reporter: Michael Malak
Currently expressions used to .join() in DataFrames are limited to column names
plus the operators exposed in org.apache.spark.sql.Column.
It would be nice to be able to .join() based on a UDF, such as, say,
euclideanDistance() < 0.1.
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