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Databricks Databricks-Certified-Associate-Developer-for-Apache-Spark-3.0
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Databricks Databricks-Certified-Associate-Developer-for-Apache-Spark-3.0 Questions and Answers
Which of the following code blocks returns about 150 randomly selected rows from the 1000-row DataFrame transactionsDf, assuming that any row can appear more than once in the returned
DataFrame?
The code block displayed below contains one or more errors. The code block should load parquet files at location filePath into a DataFrame, only loading those files that have been modified before
2029-03-20 05:44:46. Spark should enforce a schema according to the schema shown below. Find the error.
Schema:
1.root
2. |-- itemId: integer (nullable = true)
3. |-- attributes: array (nullable = true)
4. | |-- element: string (containsNull = true)
5. |-- supplier: string (nullable = true)
Code block:
1.schema = StructType([
2. StructType("itemId", IntegerType(), True),
3. StructType("attributes", ArrayType(StringType(), True), True),
4. StructType("supplier", StringType(), True)
5.])
6.
7.spark.read.options("modifiedBefore", "2029-03-20T05:44:46").schema(schema).load(filePath)
Which of the following code blocks reads in the JSON file stored at filePath as a DataFrame?
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Databricks Certified Associate Developer for Apache Spark
Understanding and applying the Spark DataFrame API for data manipulation tasks.
Apache Spark architecture concepts, applications, and DataFrame API applications.
120 minutes
Multiple choice
60
Databricks Certified Associate Developer for Apache Spark
Pass the certification exam.
2 years
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