[jira] [Created] (SPARK-21030) extend hint syntax to support any expression for Python and R

[Felix Cheung (JIRA)]

Felix Cheung created SPARK-21030:
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             Summary: extend hint syntax to support any expression for Python 
and R
                 Key: SPARK-21030
                 URL: https://issues.apache.org/jira/browse/SPARK-21030
             Project: Spark
          Issue Type: Improvement
          Components: PySpark, SparkR, SQL
    Affects Versions: 2.2.0
            Reporter: Felix Cheung


See SPARK-20854
we need to relax checks in 
https://github.com/apache/spark/blob/6cbc61d1070584ffbc34b1f53df352c9162f414a/python/pyspark/sql/dataframe.py#L422

and
https://github.com/apache/spark/blob/7f203a248f94df6183a4bc4642a3d873171fef29/R/pkg/R/DataFrame.R#L3746




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