The Hortonworks Community Connection is now live. A completely rebuilt Q&A forum, Knowledge Base, Code Hub and more, backed by the experts in the industry.

You will be redirected here in 10 seconds. If your are not redirected, click here to visit the new site.

The legacy Hortonworks Forum is now closed. You can view a read-only version of the former site by clicking here. The site will be taken offline on January 31,2016

HDP on Linux – Installation Forum

Add/modify HDFS node

  • #13235
    Trang Nguyen


    I have a question on cluster upgrade:

    – I have a 6 node cluster and went with the default installation which allocated 3 nodes as DN. I would to allocate one of the remaining existing nodes as a DN also. Is it possible to do this by changing the existing allocation and rerunning HMC installation?

    – Is it possible to increase the storage allocation of an existing DN via HMC?


  • Author
  • #13253

    Hi Trang,

    The amount of space on a datanode is controlled by the Linux filesystem, not HMC. HDFS will report availability of all space that the base Linux file system shows as available to the mount point that hadoop was installed on.


    Trang Nguyen

    Thanks Ted!


The forum ‘HDP on Linux – Installation’ is closed to new topics and replies.

Support from the Experts

A HDP Support Subscription connects you experts with deep experience running Apache Hadoop in production, at-scale on the most demanding workloads.

Enterprise Support »

Become HDP Certified

Real world training designed by the core architects of Hadoop. Scenario-based training courses are available in-classroom or online from anywhere in the world

Training »

Hortonworks Data Platform
The Hortonworks Data Platform is a 100% open source distribution of Apache Hadoop that is truly enterprise grade having been built, tested and hardened with enterprise rigor.
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.
Modern Data Architecture
Tackle the challenges of big data. Hadoop integrates with existing EDW, RDBMS and MPP systems to deliver lower cost, higher capacity infrastructure.