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From Greg Roelofs <roel...@yahoo-inc.com>
Subject Re: cluster startup problem
Date Tue, 31 Aug 2010 19:48:57 GMT
Hemanth Yamijala wrote:

> On Mon, Aug 30, 2010 at 8:19 AM, Gang Luo <lgpublic@yahoo.com.cn> wrote:
> >
> > 1. Can I share hadoop code and its configuration across nodes? Say I have a
> > distributed file system running in the cluster and all the nodes could see the
> > hadoop code and conf there. So all the nodes will use the same copy of code and
> > conf to run. Is it possible?

> If they are on the same path, technically it should be possible.
> However, I am not sure it is advisable at all. We've tried to do
> something like this using NFS and it fails in ways that make debugging
> extremely hard.

Read-only NFS?  I recently looked into an NFS-related unit-test bug (MR-2041),
but those failures were due to directory creation and/or permissions-setting
(i.e., writing), apparently timing-related.

Greg

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