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PySpark @ Freshers.in

PySpark – groupby with aggregation (count, sum, mean, min, max)

pyspark.sql.DataFrame.groupBy PySpark groupby functions groups the DataFrame using the specified columns to run aggregation ( count,sum,mean, min, max) on them….

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Amazon CloudFront @ Freshers.in

Amazon CloudFront quick reference and cheat sheet

1. CloudFront gives developers an easy and cost-effective way to distribute content with low latency and high data transfer speeds….

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Amazon Aurora @ Freshers.in

Amazon Aurora quick reference and cheat sheet.

1. Aurora is an AWS proprietary database. 2. Aurora is a fully managed service. 3. Aurora have High performance and…

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AWS Athena @ Freshers.in

Amazon Athena quick reference and cheat sheet

1. Amazon Athena is an interactive query service to analyze data in Amazon S3 using standard SQL. 2. Athena is…

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python @ Freshers.in

Python throwing as NameError: name ‘__file__’ is not defined – Solution

On Executing  os.path.dirname(os.path.realpath(__file__)) in python interactive shell, you will get the error NameError: name ‘__file__’ is not defined. This is…

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amazon_api_gateway @ Freshers.in

Amazon API Gateway quick reference and cheat sheet

1. Amazon API Gateway is an AWS service for creating, publishing, maintaining, monitoring, and securing REST, HTTP, and WebSocket APIs…

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Hive @ Freshers.in

How to drop multiple partition in Hive by giving condition.

Hive Partitions is a good and easy way to organizes Hive tables into partitions by dividing tables into different parts…

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