just simple as:

val df = sqlContext.sql(“select * from table”)
or

val df = sqlContext.read.json(“hdfs_path”)




> On Nov 24, 2015, at 3:09 AM, spark_user_2015 <li...@adobe.com> wrote:
> 
> Dear all,
> 
> is the following usage of the Dataframe constructor correct or does it
> trigger any side effects that I should be aware of?
> 
> My goal is to keep track of my dataframe's state and allow custom
> transformations accordingly.
> 
>  val df: Dataframe = ...some dataframe...
>  val newDf = new DF(df.sqlContext, df.queryExecution.logical) with StateA 
> 
> 
> 
> --
> View this message in context: 
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> 
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