Github user GayathriMurali commented on the issue:
https://github.com/apache/spark/pull/13745
@jkbradley @MLnick `repartition` needs to be added along with the creation
of the dataframe like this.
`val df = spark.createDataFrame(data).toDF("id","hour").repartition(1)`
since df is of type val. we cannot hide this statement. I could convert df to
mutable object, but that would seem inconsistent. Am i missing something here?
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