The default data source used will be parquet unless otherwise configured by spark.sql.sources.default for all operations. We can use the…
User-defined aggregations for strongly typed Datasets revolve around the Aggregator abstract class. Lets write a user defined function to calculate…
The built-in DataFrames functions provide common aggregations such as count(), countDistinct(), avg(), max(), min(), etc. While those functions are designed…
There are two ways to convert the rdd into datasets and dataframe. 1. Inferring the Schema Using Reflection Here spark…
DataFrame is an immutable distributed collection of data.Unlike an RDD, data is organized into named columns, like a table in…