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Databricks Certified Associate Developer for Apache Spark

Databricks Certified Associate Developer for Apache Spark

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Identify the logical error in the following code block intended to efficiently perform a broadcast join between DataFrame storesDF and the much larger DataFrame employeesDF using the key column storeId. The current implementation may contain inefficiencies.

Code block:

storesDF.join(broadcast(employeesDF), "storeId")

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