change in encoding method of changelog was critical section for "fop dispatch thread", "roll-over thread" and "reconfigure dispatch thread". In this patch the "encoding-method" is changed by the reconfigure dispatch thread lazily during handle_change, which solves the concurrency among the racing threads. BUG: 1002940 Change-Id: I78c3e8887efa46d0fcc60755cdf4243031cfa3eb Signed-off-by: Ajeet Jha <ajha@redhat.com> Reviewed-on: http://review.gluster.org/5844 Reviewed-by: Venky Shankar <vshankar@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Harshavardhana <harsha@harshavardhana.net>