hadoop-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Colin Patrick McCabe <rarecac...@gmail.com>
Subject Re: Using a hard drive instead of
Date Wed, 17 Oct 2012 22:37:20 GMT
The direct answer to your question us to use this theoretical super-fast
hard drive as Linux swap space.

The better answer is to use federation or another solution if your needs
exceed those servable by a single NameNode.

Cheers.
Colin
On Oct 11, 2012 9:00 PM, "Mark Kerzner" <mark.kerzner@shmsoft.com> wrote:

> Hi,
>
> Imagine I have a very fast hard drive that I want to use for the NameNode.
> That is, I want the NameNode to store its blocks information on this hard
> drive instead of in memory.
>
> Why would I do it? Scalability (no federation needed), many files are not
> a problem, and warm fail-over is automatic. What would I need to change in
> the NameNode to tell it to use the hard drive?
>
> Thank you,
> Mark
>

Mime
View raw message