Currently in Hama, eigenvalue decomposition is not implement.So In STEP 4,
it is hard to migrate it.so I
work out an idea to bypass it. before Step 4, I can let L be
denseMatrix.when I come to Step 4, I can
transform L into submatrix.in Jama,eigenvalue decomposition is support
although it
Hi, I have a problem to use hdfs.
I mounted hdfs using fuse-dfs.
I created a dummy file for 'Xen' in hdfs and then formated the dummy file using
'mke2fs'.
But the operation was faced error. The error message is as follows.
[r...@localhost hdfs]# mke2fs -j -F ./file_dumy
mke2fs 1.40.2
I don't think HDFS is a good place to store your Xen image file as it will
likely be updated/appended frequently in small blocks. With the way HDFS is
designed for, you can't quite use it like a regular filesystem (e.g. ones
that support frequent small block appends/updates in files). My
Hi,
Before consider this, let's talk about your problem and why do you
want to use these. If your application isn't huge then I think
MPI-based matrix package could be much helpful to you since Hama
concept also is the large-scale, not high performance for small
matrices.
And, Have you tried to
Well i made ssh with passphares. as the system in which i need to login
requires ssh with pass phrases and those systems have to be part of my
cluster. and so I need a way where I can specify -i path/to key/ and
passphrase to hadoop in before hand.
Pankil
On Thu, May 21, 2009 at 9:35 PM, Aaron
Pankil Doshi wrote:
Well i made ssh with passphares. as the system in which i need to login
requires ssh with pass phrases and those systems have to be part of my
cluster. and so I need a way where I can specify -i path/to key/ and
passphrase to hadoop in before hand.
Pankil
Well, are trying
Steve,
Security through obscurity is always a good practice from a development
standpoint and one of the reasons why tricking you out is an easy task.
Please, keep hiding relevant details from people in order to keep everyone
smiling.
Hal
Pankil Doshi wrote:
Well i made ssh with passphares.
Version 19.1 with patches:
4780-2v19.patch (Jira 4780)
closeAll3.patch (Jira 3998)
I have confirmed that
https://issues.apache.org/jira/browse/HADOOP-4924patch is in, so that
is not the fix.
We are having task trackers die every night with a null pointer exception.
Usually 2 or so out of 8 (25%
Pankil,
I used to be very confused by hadoop and SSH keys. SSH is NOT
required. Each component can be started by hand. This gem of knowledge
is hidden away in the hundreds of DIGG style articles entitled 'HOW TO
RUN A HADOOP MULTI-MASTER CLUSTER!'
The SSH keys are only required by the shell
More specifically:
HDFS does not support operations such as opening a file for write/append
after it has already been closed, or seeking to a new location in a writer.
You can only write files linearly; all other operations will return a not
supported error.
You'll also find that random-access
Hello,
Is there a tutorial available to build an Hadoop AMI (like
Cloudera's)? Cloudera has an 18.2 ami and for reasons I understand
they can't provide(as of now) AMIs for higher Hadoop versions until
they become stable.
I would like to create an AMI for 19.2 - so was hoping if there is a
guide
Hi Lance,
Is it possible that your mapred.local.dir is in /tmp and you have a cron job
that cleans it up at night (default on many systems)?
Thanks
-Todd
On Fri, May 22, 2009 at 9:33 AM, Lance Riedel la...@dotspots.com wrote:
Version 19.1 with patches:
4780-2v19.patch (Jira 4780)
Sure, I'll try out 19.2.. but where is it? I don't see it here:
http://svn.apache.org/repos/asf/hadoop/core/
(looking under tags)
On Fri, May 22, 2009 at 2:11 PM, Todd Lipcon t...@cloudera.com wrote:
Hi Lance,
It's possible this is related to the other JIRA (HADOOP-5761). If it's not
too
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