SANTA CLARA, CA--(Marketwire - Feb 27, 2013) - Strata --WANdisco (LSE: WAND), a provider of high-availability software for global enterprises to meet the challenges of Big Data and distributed ...

The single point of failure of the Hadoop NameNode and the overall lack of native high availability (HA) features in Hadoop should not be a surprise to you. In fact, it’s been a well-documented issue ...

In a nutshell, in any given Hadoop cluster, a single Name Node is responsible for tracking which slave nodes are available, where in the cluster certain data resides, and which nodes have failed.

I noted in a previous blog post that Hadoop needed a number of enhancements to make it more acceptable to enterprise users. One of them was simplicity. Indeed, even some of the purveyors of Hadoop ...

In a standard Hadoop deployment, the namenode is a single point of failure, but can be manually replicated. While HDFS provides features for automated data recovery and integrity checking, ...

VMware’s vSphere can monitor Hadoop NameNode and JobTracker services. Should one of these services fail, vSphere can redirect operations to live backup services and keep the cluster running.

If you have a NameNode, SecondaryNameNode, JobTracker, TaskTracker, and DataNode processes running (jps is the command we just entered of course ), the Hadoop is running.

Things required for setting up the hadoop cluster: Supported platforms. Linux/GNU is supported platform that is used for development and production purposes. Hadoop has been shown on Linux/GNU ...