Spark-Nested-Data-Parser

Nested Data (JSON/AVRO/XML) Parsing and Flattening using Apache-Spark.

Implementation steps:

1. Load JSON/XML to a spark data frame.
2. Loop until the nested element flag is set to false.
3. Loop through the schema fields - set the flag to true when we find ArrayType and StructType.
4. For ArrayType - Explode and StructType - separate the inner fields.
5. It comes out once all the levels are flattened out.

Flatten Strategy: Schema fields iteration using 1.Iterative 2.Recursive