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September 20, 2017 | Vinay Shukla | From the Dev Team

Data Science for the Modern Data Architecture

September 19, 2017 | Simon Ball | Announcements

Hortonworks Cybersecurity Platform – Big Data Cybersecurity Solution

September 18, 2017 | Matt Spillar | Hortonworks Case Study

Lloyds Banking Group Brings Home Data Accolade

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HDFS metadata represents the structure of HDFS directories and files in a tree. It also includes the various attributes of directories and files, such as ownership, permissions, quotas, and replication factor. In this blog post, I’ll describe how HDFS persists its metadata in Hadoop 2 by exploring the underlying local storage directories and files. All […]

Securing any system requires you to implement layers of protection.  Access Control Lists (ACLs) are typically applied to data to restrict access to data to approved entities. Application of ACLs at every layer of access for data is critical to secure a system. The layers for hadoop are depicted in this diagram and in this […]

Before I was a developer of Hadoop, I was a user of Hadoop.  I was responsible for operation and maintenance of multiple Hadoop clusters, so it’s very satisfying when I get the opportunity to implement features that make life easier for operations staff. Have you ever wondered what’s happening during a namenode restart?  A new […]