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From Yusaku Sako <>
Subject Re: DataNode not utilising all disk space
Date Wed, 17 Sep 2014 21:22:47 GMT
Hi Charles,

1.What does "df -h" show on this new node?

2. Can you post the output of the following API call for the host?
GET http://ambari-host:8080/api/v1/clusters/<your-cluster-name>/hosts/<host-name>

3. When you go to the NameNode UI (http://namenode-host:50070/), what
does it show?


On Wed, Sep 17, 2014 at 1:12 AM, Charles Robertson
<> wrote:
> Hi all,
> The other day I added a new slave node to my cluster using the Ambari 'add
> host' functionality. The other nodes in my cluster had 8 Gb drives, which is
> not enough, so this new host I set up with a single 100 Gb drive. I did not
> do anything to change the data directory.
> However, Amabri is reporting on the 'Hosts' tab that the new node is using 5
> of 8 GB - why is this not making the full 100 Gb available? I understood
> Hadoop to work by configuring how much space *not* to use, and HDFS would
> make use of the rest?
> Thanks,
> Charles

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