📒 Notes123

navinkumar

navinkumar

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Passionate Data Engineer skilled in SQL, Python, and Data Warehousing, with a habit of discovering new things in computer science.

java part -2

Mar 26, 20247 min read

java oops · Class and Objects Class is a blueprint. An object is a real entity. NOTE : Don't confuse with these names they all same meaning States...

java part -2

Java part -1

Mar 26, 20243 min read

java basics · Architecture Data types Control statement Flowchart while loop public class WhileLoopDemo { public static void main(String[]...

Java part -1

ACID Properties

Mar 21, 20241 min read

Relational Database Management Systems (RDBMS) works based on the ACID properties. Let’s dive into each of these properties: Transaction refers to a...

ACID Properties

Hive ORC File Format

Mar 19, 20241 min read

smaller size Acid properties (insert update delete) Columnar storage for fast retrieval Tables used select * from orc_table; -- stored as ORC...

Hive ORC File Format

Hive Partition with Bucket

Mar 19, 20242 min read

In Hive, partitioning and bucketing are two techniques used for organizing and optimizing data storage and querying. Hive Partition with bucket...

Hive Partition with Bucket

How to decide bucket count in hive

Mar 18, 20241 min read

Steps Calculate Expected Bucket Size: Divide the table size by the block size on Hadoop to get an initial estimate. Expected Bucket Size =...

How to decide bucket count in hive