Noticed that in nfs (as of release-3.2 branch, please validate this with master), if while sending a buffer if there is a error from socket, the buffer is never removed from queue, and hence will be in a loop trying to send it.
CHANGE: http://review.gluster.com/400 (Change-Id: If8ba73ac57bc235a28c1e1cdc7a5e11947e7a52f) merged in release-3.2 by Vijay Bellur (vijay)