You have an Azure Synapse Analytics Apache Spark pool named Pool1.
You plan to load JSON files from an Azure Data Lake Storage Gen2 container into the tables in Pool1. The structure and data types vary by file.
You need to load the files into the tables. The solution must maintain the source data types.
What should you do?
To load JSON files from an Azure Data Lake Storage Gen2 container into tables in an Azure Synapse Analytics Apache Spark pool while maintaining the source data types, the best approach is to use PySpark. PySpark provides a mechanism to read and infer schemas from JSON files, thus preserving their original data types. It is specifically designed to handle diverse data transformations and manipulations efficiently in a Spark environment.
Should be D, it's about Apache Spark pool, not serverless SQL pool.
If your JSON files have a consistent structure and data types, then OPENROWSET is a good option. However, if your JSON files have a varying structure and data types, then PySpark is a better option.
To load JSON files from an Azure Data Lake Storage Gen2 container into tables in an Azure Synapse Analytics Apache Spark pool, you can use PySpark. PySpark provides a flexible and powerful framework for working with big data in Apache Spark. Therefore, the correct answer is: D. Load the data by using PySpark. You can use PySpark to read the JSON files from Azure Data Lake Storage Gen2, infer the schema, and load the data into tables in the Spark pool while maintaining the source data types. PySpark provides various functions and methods to handle JSON data and perform transformations as needed before loading it into tables.
PySpark provides a powerful and flexible programming interface for processing and loading data in Azure Synapse Analytics Apache Spark pools. With PySpark, you can leverage its JSON reader capabilities to infer the schema and maintain the source data types during the loading process.
As stated by Microsoft, "Serverless SQL pool can automatically synchronize metadata from Apache Spark. A serverless SQL pool database will be created for each database existing in serverless Apache Spark pools.". So even though the files in Azure Storage were created with Apache Spark, you can still query them using OPENROWSET with a serverless SQL Pool https://learn.microsoft.com/en-us/azure/synapse-analytics/sql/develop-storage-files-spark-tables
As the question states that "You need to load the files into the tables" , through serverless sql pool we cannot load data. so the answer should be D
We are dealing with varying JSON. There is nothing about this option by the link you've provided. The correct answer is D...
To load JSON files from an Azure Data Lake Storage Gen2 container into the tables in an Apache Spark pool in Azure Synapse Analytics while maintaining the source data types, you should use PySpark.
We have an "Azure Synapse Analytics Apache Spark pool" therefore, we use Spark. There is no information about a serverless SQL Pool
Should be D
PySpark is the Python API for Apache Spark, which is a distributed computing framework that can handle large-scale data processing.
Should be D, it's about Apache Spark pool, not serverless SQL pool.
Its a spark pool
Both C and D looks correct
ChatGPT 4o Using PySpark in an Apache Spark pool within Azure Synapse Analytics is the most flexible and powerful way to handle JSON files with varying structures and data types. PySpark can infer schema and handle complex data transformations, making it well-suited for loading heterogeneous JSON data into tables while preserving the original data types.
When loading data into an Apache Spark pool, especially when dealing with inconsistent file structures, PySpark (the Python API for Spark) is generally the better choice over OpenRowset. This is because PySpark offers greater flexibility, better performance, and more robust handling of varied and complex data structures.
should be D
Option D: Load the data by using PySpark
The question stated that "You have an Azure Synapse Analytics Apache Spark pool named Pool1.", so this question is about Spark pool