Remove Bytes Remove Hadoop Remove Metadata
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Open-Sourcing AvroTensorDataset: A Performant TensorFlow Dataset For Processing Avro Data

LinkedIn Engineering

An Avro file is formatted with the following bytes: Figure 1: Avro file and data block byte layout The Avro file consists of four “magic” bytes, file metadata (including a schema, which all objects in this file must conform to), a 16-byte file-specific sync marker, and a sequence of data blocks separated by the file’s sync marker.

Datasets 102
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Apache Ozone Fault Injection Framework

Cloudera

One key part of the fault injection service is a very lightweight passthrough fuse file system that is used by Ozone for storing all its persistent data and metadata. The APIs are generic enough that we could target both Ozone data and metadata for failure/corruption/delays. Introducing Apache Hadoop Ozone. Further Reading.

Hadoop 96
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Kafka Listeners – Explained

Confluent

When a client (producer/consumer) starts, it will request metadata about which broker is the leader for a partition—and it can do this from any broker. The key thing is that when you run a client, the broker you pass to it is just where it’s going to go and get the metadata about brokers in the cluster from. The default is 0.0.0.0,

Kafka 101
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A Definitive Guide to Using BigQuery Efficiently

Towards Data Science

Like a dragon guarding its treasure, each byte stored and each query executed demands its share of gold coins. Join as we journey through the depths of cost optimization, where every byte is a precious coin. It is also possible to set a maximum for the bytes billed for your query. Photo by Konstantin Evdokimov on Unsplash ?

Bytes 67
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Data Engineering Weekly #201

Data Engineering Weekly

[link] Dani: Apache Iceberg: The Hadoop of the Modern Data Stack? The comment on Iceber, a Hadoop of the modern data stack, surprises me. Iceberg has not reduced the complexity of the data stack, and all the legacy Hadoop complexity still exists on top of Apache Iceberg. However, I 100% agree with the complex stack to maintain.

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Top 100 Hadoop Interview Questions and Answers 2023

ProjectPro

With the help of ProjectPro’s Hadoop Instructors, we have put together a detailed list of big data Hadoop interview questions based on the different components of the Hadoop Ecosystem such as MapReduce, Hive, HBase, Pig, YARN, Flume, Sqoop , HDFS, etc. What is the difference between Hadoop and Traditional RDBMS?

Hadoop 40
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HDFS Data Encryption at Rest on Cloudera Data Platform

Cloudera

To prevent the management of these keys (which can run in the millions) from becoming a performance bottleneck, the encryption key itself is stored in the file metadata. Each file will have an EDEK which is stored in the file’s metadata. hdfs dfs -cat” on the file triggers a hadoop KMS API call to validate the “DECRYPT” access.

MySQL 73