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8 Ways to Optimize AWS Glue Jobs in a Nutshell

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  Improving the performance of AWS Glue jobs involves several strategies that target different aspects of the ETL (Extract, Transform, Load) process. Here are some key practices. 1. Optimize Job Scripts Partitioning : Ensure your data is properly partitioned. Partitioning divides your data into manageable chunks, allowing parallel processing and reducing the amount of data scanned. Filtering : Apply pushdown predicates to filter data early in the ETL process, reducing the amount of data processed downstream. Compression : Use compressed file formats (e.g., Parquet, ORC) for your data sources and sinks. These formats not only reduce storage costs but also improve I/O performance. Optimize Transformations : Minimize the number of transformations and actions in your script. Combine transformations where possible and use DataFrame APIs which are optimized for performance. 2. Use Appropriate Data Formats Parquet and ORC : These columnar formats are efficient for storage and querying, signif
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The tricky interview questions on IoT to read now

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Internet of things is a tricky subject. I have given in this post on tricky interview questions asked for IoT Jobs. I have given simple to understand way.

Mobile networks already deliver connectivity to a broad range of devices, enabling the development of innovative new services and applications.

Why IoT you need


This new wave of connectivity is going beyond tablets and laptops; to connected cars and buildings; TVs and game consoles; smart meters and traffic control; with the prospect of intelligently connecting almost anything and anyone.

  • This is what the GSMA refers to as the “Connected Life”. As the Connected Life evolves, the number of mobile connections worldwide is set to rise dramatically to reach 10.5 billion by 2020, while the total number of connected devices across all access technologies could reach 25.6 billion1 .
  • These devices will bridge the physical and digital worlds, enabling a new category of services that improve the quality of life and productivity of individuals, society and enterprises.
  • This Internet of Things - a widely distributed, locally intelligent network of smart devices - will enable extensions and enhancements to fundamental services in education, health and other sectors, as well as providing a new ecosystem for application development.
  • By enabling devices to communicate with each other independently of human interaction The Internet of Things will open up new revenue streams, facilitate new business models, drive efficiencies and improve the way existing services across many different sectors are delivered.

It will represent a very important demand-side stimulus that helps finance the deployment of mobile broadband networks around the world. In total, the positive impact on the global economy could be as much as US$4.5 trillion per annum, according to a study by Machina Research.

Below are the selected interview Questions on Internet of things:

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