Konstantin V. Shvachko
Konstantin is a veteran Hadoop developer. He is a principal Hadoop architect at eBay. Konstantin specializes in efficient data structures and algorithms for large-scale distributed storage systems. He is a member of the Apache Hadoop PMC. Timothy Coulter Tim Coulter is a specialist consultant in the areas of Enterprise Networking, Operations, and Infrastructure.
The primary goal of the proposed architecture is to build a highly available NameNode, which can failover to a Standby node in seconds, and which requires minimum changes to the existing code base.
The architecture introduces a StandbyNode, which is an evolutionary modification of BackupNode already existing in HDFS. This is the only major change required to the current Hadoop code base. The approach further utilizes standard HA software like LinuxHA, and existing functionality of load balancing hardware or software platforms. The system is prototyped on eBay clusters.