Wayne Zhang created SPARK-19773:
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Summary: SparkDataFrame should not allow duplicate names
Key: SPARK-19773
URL: https://issues.apache.org/jira/browse/SPARK-19773
Project: Spark
Issue Type: Bug
Components: SparkR
Affects Versions: 2.1.0
Reporter: Wayne Zhang
Priority: Minor
SparkDataFrame in SparkR seems to accept duplicate names at creation, but
incurs error when calling methods downstream. For example, we can do:
{{{code}}}
l <- list(list(1, 2), list(3, 4))
df <- createDataFrame(l, c("a", "a"))
head(df)
{{{code}}}
But an error occurs when we do df$a = df$a * 2.0.
I suggest we add validity check for duplicate names at initialization.
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