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PySpark

PySpark – Loop/Iterate Through Rows in DataFrame

PySpark provides map(), mapPartitions() to loop/iterate through rows in RDD/DataFrame to perform the complex transformations, and these two returns the same number of records as in the original DataFrame but…

3 Comments
March 27, 2021
Read more about the article Spark – Extract DataFrame Column as List
Apache Spark

Spark – Extract DataFrame Column as List

Let's see how to convert/extract the Spark DataFrame column as a List (Scala/Java Collection), there are multiple ways to convert this, I will explain most of them with examples. Remember…

1 Comment
March 15, 2021
Read more about the article Collect() – Retrieve data from Spark RDD/DataFrame
Apache Spark

Collect() – Retrieve data from Spark RDD/DataFrame

Spark collect() and collectAsList() are action operation that is used to retrieve all the elements of the RDD/DataFrame/Dataset (from all nodes) to the driver node. We should use the collect()…

5 Comments
August 11, 2020
Read more about the article PySpark Collect()  – Retrieve data from DataFrame
PySpark

PySpark Collect() – Retrieve data from DataFrame

PySpark RDD/DataFrame collect() is an action operation that is used to retrieve all the elements of the dataset (from all nodes) to the driver node. We should use the collect()…

8 Comments
August 11, 2020
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