Remove Bytes Remove Metadata Remove NoSQL
article thumbnail

Introducing Netflix’s Key-Value Data Abstraction Layer

Netflix Tech

Central to this infrastructure is our use of multiple online distributed databases such as Apache Cassandra , a NoSQL database known for its high availability and scalability. The first level is a hashed string ID (the primary key), and the second level is a sorted map of a key-value pair of bytes. number of chunks).

Bytes 99
article thumbnail

97 things every data engineer should know

Grouparoo

This provided a nice overview of the breadth of topics that are relevant to data engineering including data warehouses/lakes, pipelines, metadata, security, compliance, quality, and working with other teams. For example, grouping the ones about metadata, discoverability, and column naming might have made a lot of sense.

Insiders

Sign Up for our Newsletter

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

article thumbnail

100+ Big Data Interview Questions and Answers 2023

ProjectPro

Data Storage: The next step after data ingestion is to store it in HDFS or a NoSQL database such as HBase. NoSQL, for example, may not be appropriate for message queues. NameNode is often given a large space to contain metadata for large-scale files. As you may know, the NameNode keeps metadata about the file system in RAM.

article thumbnail

HBase Interview Questions and Answers for 2023

ProjectPro

Recommended Reading: Top 50 NLP Interview Questions and Answers 100 Kafka Interview Questions and Answers 20 Linear Regression Interview Questions and Answers 50 Cloud Computing Interview Questions and Answers HBase vs Cassandra-The Battle of the Best NoSQL Databases 3) Name few other popular column oriented databases like HBase.

Hadoop 40
article thumbnail

Top 100 Hadoop Interview Questions and Answers 2023

ProjectPro

ii) Data Storage – The subsequent step after ingesting data is to store it either in HDFS or NoSQL database like HBase. Avro files store metadata with data and also let you specify independent schema for reading the files. There is a pool of metadata which is shared by all the NameNodes.

Hadoop 40
article thumbnail

Kafka Connect Deep Dive – Error Handling and Dead Letter Queues

Confluent

It can be used for streaming data into Kafka from numerous places including databases, message queues and flat files, as well as streaming data from Kafka out to targets such as document stores, NoSQL, databases, object storage and so on. f 'nKey (%K bytes): %k Value (%S bytes): %s Timestamp: %T Partition: %p Offset: %o Headers: %hn'.

Kafka 111
article thumbnail

How to Become a Big Data Engineer in 2023

ProjectPro

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. Industries generate 2,000,000,000,000,000,000 bytes of data across the globe in a single day.