Hi,
I found
http://hadoopblog.blogspot.com/2009/09/hdfs-block-replica-placement-in-your.html
explains the process nicely.
The first replica of each block will be stored on the client machine, if it's a
datanode itself. Makes sense, as it doesn't require a network transfer.
Otherwise, a random
In this context I would like to ask, can we actually place the data where we
wish instead of allowing Hadoop's intelligence to take care of this?
On Tue, Apr 19, 2011 at 10:52 AM, Kai Voigt wrote:
> Hi,
>
> I found
> http://hadoopblog.blogspot.com/2009/09/hdfs-block-replica-placement-in-your.htm
Yes, that's it
Thanks
Nan
On Mon, Apr 18, 2011 at 10:16 PM, Harsh J wrote:
> Hello,
>
> On Mon, Apr 18, 2011 at 7:16 PM, Nan Zhu wrote:
> > Hi, all
> >
> > I'm confused by a question that "how does the HDFS decide where to put
> the
> > data blocks "
> >
> > I mean that the user invokes some
Hello,
On Mon, Apr 18, 2011 at 7:16 PM, Nan Zhu wrote:
> Hi, all
>
> I'm confused by a question that "how does the HDFS decide where to put the
> data blocks "
>
> I mean that the user invokes some commands like "./hadoop put ***", we
> assume that this file consistes of 3 blocks, but how HDFS d
Hi, all
I'm confused by a question that "how does the HDFS decide where to put the
data blocks "
I mean that the user invokes some commands like "./hadoop put ***", we
assume that this file consistes of 3 blocks, but how HDFS decides where
these 3 blocks to be put?
Most of the materials don't i
