How to assign a column in Spark Dataframe PySpark as a Primary Key

+1 vote
I've just converted a glue dynamic frame into spark dataframe using the .todf() method. I now need to assign a column as the Primary Key. How do I do that? Please help!
Jan 9, 2020 in Apache Spark by anonymous
• 150 points
What you could do is, create a dataframe on your PySpark, set the column as Primary key and then insert the values in the PySpark dataframe.
Hi Kalgi! I do not see a way to set a column as Primary Key in PySpark. Can you please share the details (code) about how that is done? Thanks!

1 answer to this question.

+1 vote
spark do not have any concept of primary key. As spark is computation engine not database.
answered Jan 12, 2020 by Sirish
• 160 points
Yes I just read a few articles and came to the conclusion that you cannot set primary key in apache spark.

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