Namenode HA Reaches a Major Milestone

We reached a significant milestone in HDFS: the Namenode HA branch was merged into the trunk. With this merge, HDFS trunk now supports HOT failover.

Significant enhancements were completed to make HOT Failover work:

  • Configuration changes for HA
  • Notion of active and standby states were added to the Namenode
  • Client-side redirection
  • Standby processing journal from Active
  • Dual block reports to Active and Standby

We have extensively tested HOT manual failover in our labs over the last few months. The HDFS team is now working on completing automatic failover. Please see HDFS-1623 for more details.

~Jitendra Pandey

Categorized by :
Apache Hadoop HDFS High Availability

Leave a Reply

Your email address will not be published. Required fields are marked *

If you have specific technical questions, please post them in the Forums

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>

Join the Webinar!

YARN Ready – Integrating to YARN using Slider (part 2 of 3)
Thursday, August 7, 2014
12:00 PM Eastern / 9:00 AM Pacific

More Webinars »

Integrate with existing systems
Hortonworks maintains and works with an extensive partner ecosystem from broad enterprise platform vendors to specialized solutions and systems integrators.
Get started with Sandbox
Hortonworks Sandbox is a self-contained virtual machine with Apache Hadoop pre-configured alongside a set of hands-on, step-by-step Hadoop tutorials.
Contact Us
Hortonworks provides enterprise-grade support, services and training. Discuss how to leverage Hadoop in your business with our sales team.