Thanks, Yes a setup with fuse-dfs and hdfs works fine.I think the
mount point was bad for whatever reason and was failing with that
error .I created another mount point for mounting which resolved the
transport end point error.
Also i had -d option on my command..:)
Roopa
On Jan 28, 2009, at 6:35 PM, Craig Macdonald wrote:
Hi Roopa,
Firstly, can you get the fuse-dfs working for an instance HDFS?
There is also a debug mode for fuse: enable this by adding -d on the
command line.
C
Roopa Sudheendra wrote:
Hey Craig,
I tried the way u suggested..but i get this transport endpoint not
connected. Can i see the logs anywhere? I dont see anything in /var/
log/messages either
looks like it tries to create the file system in hdfs.c but not
sure where it fails.
I have the hadoop home set so i believe it gets the config info.
any idea?
Thanks,
Roopa
On Jan 28, 2009, at 1:59 PM, Craig Macdonald wrote:
In theory, yes.
On inspection of libhdfs, which underlies fuse-dfs, I note that:
* libhdfs takes a host and port number as input when connecting,
but not a scheme (hdfs etc). The easiest option would be to set
the S3 as your default file system in your hadoop-site.xml, then
use the host of "default". That should get libhdfs to use the S3
file system. i.e. set fuse-dfs to mount dfs://default:0/ and all
should work as planned.
* libhdfs also casts the FileSystem to a DistributedFileSystem for
the df command. This would fail in your case. This issue is
currently being worked on - see HADOOP-4368
https://issues.apache.org/jira/browse/HADOOP-4368.
C
Roopa Sudheendra wrote:
Thanks for the response craig.
I looked at fuse-dfs c code and looks like it does not like
anything other than "dfs:// " so with the fact that hadoop can
connect to S3 file system ..allowing s3 scheme should solve my
problem?
Roopa
On Jan 28, 2009, at 1:03 PM, Craig Macdonald wrote:
Hi Roopa,
I cant comment on the S3 specifics. However, fuse-dfs is based
on a C interface called libhdfs which allows C programs (such as
fuse-dfs) to connect to the Hadoop file system Java API. This
being the case, fuse-dfs should (theoretically) be able to
connect to any file system that Hadoop can. Your mileage may
vary, but if you find issues, please do report them through the
normal channels.
Craig
Roopa Sudheendra wrote:
I am experimenting with Hadoop backed by Amazon s3 filesystem
as one of our backup storage solution. Just the hadoop and
s3(block based since it overcomes the 5gb limit) so far seems
to be fine.
My problem is that i want to mount this filesystem using fuse-
dfs ( since i don't have to worry about how the file is written
on the system ) . Since the namenode does not get started with
s3 backed hadoop system how can i connect fuse-dfs to this setup.
Appreciate your help.
Thanks,
Roopa
