running nutch of nfs

I tried running hadoop on a nfs mounted home directory on a
single node. But
as the following tip on the wiki says, I am stuck with an
issue:

"Don't use DFS on an NFS mount (this would be pretty
stupid anyway, but just
for testing, one might just set it up into an NFS homre
directory). DFS uses
locks, and NFS may be configured to not allow them."


How to figure out if NFS uses locks ?
Is there a work around for this problem ? As in disabling
locks and
proceeding .
Any pointers would be helpful !

Thanks
Prem