Exit DATABRICKS-CERTIFIED-ASSOCIATE-DEVELOPER-FOR-APACHE-SPARK Databricks Certified Associate Developer for Apache Spark 3.0
Question 5 of 5
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Q5 Single choice

Which of the following code blocks can be used to save DataFrame transactionsDf to memory only, recalculating partitions that do not fit in memory when they are needed?

  • A

    from pyspark import StorageLevel transactionsDf.cache(StorageLevel.MEMORY_ONLY)

  • B

    transactionsDf.cache()

  • C

    transactionsDf.storage_level('MEMORY_ONLY')

  • D

    transactionsDf.persist()

  • E

    transactionsDf.clear_persist()

  • F

    from pyspark import StorageLevel transactionsDf.persist(StorageLevel.MEMORY_ONLY)

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