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Jessica Thornsby is the Technical and Creative Copywriter at WANdisco, where she writers regular tutorials on Apache Subversion, TortoiseSVN, uberSVN, and all things version control. She spends her spare time editing the CD reviews section at www.leedsmusicscene.net, contributing to A Short Fanzine About Rocking, and researching her family tree. You can find her on Twitter @jthornsby Jessica is a DZone MVB and is not an employee of DZone and has posted 29 posts at DZone. You can read more from them at their website. View Full User Profile

Non-Stop NameNode Removes Hadoop’s Single Point of Failure

02.28.2013
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We’re pleased to announce the release of the WANdisco Non-Stop NameNode, the only 100% uptime solution for Apache Hadoop. Built on our Non-Stop patented technology, Hadoop’s NameNode is no longer a single point of failure, delivering immediate and automatic failover and recovery whenever a server goes offline, without any downtime or data loss.

“This announcement demonstrates our commitment to enterprises looking to deploy Hadoop in their production environments today,” said David Richards, President and CEO of WANdisco. “If the NameNode is unavailable, the Hadoop cluster goes down. With other solutions, a single NameNode server actively supports client requests and complex procedures are required if a failure occurs. The Non-Stop NameNode eliminates those issues and also allows for planned maintenance without downtime. WANdisco provides 100% uptime with unmatched scalability and performance.”

Additional benefits of Non-Stop NameNode include:

  • Every NameNode server is active and supports simultaneous read and write requests.
  • All servers are continuously synchronized.
  • Automatic continuous hot backup.
  • Immediate and automatic recovery after planned or unplanned outages, without the need for administrator intervention.
  • Protection from “split-brain” where the backup server becomes active before the active server is completely offline. This can result in data corruption.
  • Full support for HBase.
  • Works with Apache Hadoop 2.0 and CDH 4.1.

“Hadoop was not originally developed to support real-time, mission critical applications, and thus its inherent single point of failure was not a major issue of concern,” said Jeff Kelly, Big Data Analyst at Wikibon. “But as Hadoop gains mainstream adoption, traditional enterprises rightly are looking to Hadoop to support both batch analytics and mission critical apps. With WANdisco’s unique Non-Stop NameNode approach, enterprises can feel confident that mission critical applications running on Hadoop, and specifically HBase, are not at risk of data loss due to a NameNode failure because, in fact, there is no single NameNode. This is a major step forward for Hadoop.”

You can learn more about the Non-Stop NameNode at the product page, where you can also claim your free trial.

If you’d like to get first-hand experience of the Non-Stop NameNode and are attending the Strata Conference in Santa Clara this week, you can find us at booth 317, where members of the WANdisco team will be doing live demos of Non-Stop NameNode throughout the event.

 

Published at DZone with permission of Jessica Thornsby, author and DZone MVB. (source)

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