What are the possible values for Spark DataFrame hint function?

Question

What are the possible values can be used in the hint function of Spark DataFrame?

I was looking at the documentation, but not much helpful except broadcast https://spark.apache.org/docs/latest/api/python/pyspark.sql.html#pyspark.sql.DataFrame.hint

Answer 1

Here is an excellent source, from the master, himself:

https://jaceklaskowski.gitbooks.io/mastering-spark-sql/spark-sql-hint-framework.html#specifying-query-hints