Knowledge Hut

DECEMBER 21, 2023

Avro creates binary data which can be both compressed as well as split. Avro creates a file that stores all the data and saves the schema in the metadata section. Pros: Avro stores data in a compact and efficient manner. Therefore, it can send inputs to Hadoop MapReduce jobs. Avro schemas are written in JSON format.

Hadoop 52

Hadoop Big Data NoSQL Unstructured Data 52

ProjectPro

NOVEMBER 22, 2021

StructType is a collection of StructField objects that determines column name, column data type, field nullability, and metadata. To define the columns, PySpark offers the pyspark.sql.types import StructField class, which has the column name (String), column type (DataType), nullable column (Boolean), and metadata (MetaData).

Hadoop 52

Hadoop Python Datasets Metadata 52

ProjectPro

JANUARY 31, 2023

Why is HDFS only suitable for large data sets and not the correct tool for many small files? NameNode is often given a large space to contain metadata for large-scale files. The metadata should come from a single file for optimal space use and economic benefit. And storing these metadata in RAM will become problematic.

Big Data 52

Big Data Hadoop AWS Relational Database 52

ProjectPro

JULY 8, 2021

Get FREE Access to Data Analytics Example Codes for Data Cleaning, Data Munging, and Data Visualization Apache Kafka Event-Driven Workflow Orchestration Kafka Producers In Kafka, the producers send data directly to the broker that plays the role of leader for a given partition. However, in the 2.8.0

Kafka 40

Kafka Architecture IT Big Data 40

ProjectPro

SEPTEMBER 26, 2021

Becoming a Big Data Engineer - The Next Steps Big Data Engineer - The Market Demand An organization’s data science capabilities require data warehousing and mining, modeling, data infrastructure, and metadata management. Most of these are performed by Data Engineers.

Big Data 52

Big Data Data Engineering Data Engineer Engineering 52

ProjectPro

APRIL 20, 2017

Having multiple hadoop projects on your resume will help employers substantiate that you can learn any new big data skills and apply them to real life challenging problems instead of just listing a pile of hadoop certifications. The dataset consists of metadata and audio features for 1M contemporary and popular songs.

Hadoop 40

Hadoop Big Data Coding Project 40

ProjectPro

AUGUST 9, 2018

AWS Glue Data Catalog is a managed AWS service that enables you to store, annotate, and exchange metadata in the AWS Cloud. Each AWS account and region has a different set of AWS Glue Data Catalogs. AWS Identity and Access Management (IAM) policies restrict access to the data sources managed by the AWS Glue Data Catalog.

AWS 40

AWS Amazon Web Services Cloud Computing Database 40