Databricks
DATABRICKS-CERTIFIED-ASSOCIATE-DEVELOPER-FOR-APACHE-SPARK · Question #27
Which of the following operations can be used to return a new DataFrame from DataFrame storesDF without inducing a shuffle?
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Spark DataFrame Transformations and Performance
Question
Which of the following operations can be used to return a new DataFrame from DataFrame storesDF without inducing a shuffle?
Options
- AstoresDF.intersect()
- BstoresDF.repartition(1)
- CstoresDF.union()
- DstoresDF.coalesce(1)
- EstoresDF.rdd.getNumPartitions()
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Topics
#Spark DataFrame API#Shuffle#Partitioning#Performance Optimization