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This allows you to read JSON files with key-value pairs in single-line or multi-line mode. In single-line mode, a file can be split into many parts and read in parallel. In multi-line mode, a file is loaded as a whole entity and cannot be split.
You should be able to read the json file with below code.
valdf=spark.read.format("json").load("file.json")
After this you will need to use the explode function to add columns to the dataframe using the nested values.
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