Backup / HDFS export This charm has an action called 'backup-hdfs' which will perform a distcp to a destination hadoop namenode. By default, the entire hdfs fs will be copied with the -update flag, ...

lifecycle/staleDenotes an issue or PR has remained open with no activity and has become stale.Denotes an issue or PR has remained open with no activity and has become stale. What happened: Active ...

This paper proposes The High Availability Method using Heartbeat and DRBD on Hadoop Namenode Failover. Implementation of Hadoop as computing process framework and media storage needs to be supported ...

Much progress was made with the launch of Hadoop version 2 last year, which brought automated mechanisms for handling a NameNode failover and maintaining continuous access to HDFS services. Whereas ...

HDFS instances are divided into two components: the namenode, which maintains metadata to track the placement of physical data across the Hadoop instance and datanodes, which actually store the data.

If you set up pseudo-distributed (or distributed) Hadoop, you'll gain the benefit of two spartan-but-useful Web interfaces. The NameNode Web interface allows you to browse logs and browse the Hadoop ...

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 ...