At Sun, 29 Jul 2012 03:42:45 +0800, Yunkai Zhang wrote: > > From: Yunkai Zhang <[email protected]> > > Since sheeps in delayed_nodes list won't cause recovery when the cluster in > WAIT_FOR_JOIN state, it's safe to put sheeps with smaller epoch into > delayed_nodes list, regardless of whether it once belonged to the cluster. > > Benifit from this change, we needn't to restart sheep in the following > scenario: > > 1) Start [0,1,2,3] sheeps: > epoch of [0,1,2,3] sheeps = 1 > > 2) Kill [0] sheep, and then Shutdown [1,2,3] sheeps > epoch of [0] sheep = 1 > epoch of [1,2,3] sheeps = 2 > > 3) Start [1,2] sheeps: > epoch of [0] sheep = 1 > epoch of [1,2,3] sheeps = 2 > cluster status = WAIT_FOR_JOIN (waits [3] sheep) > > 4) Start [0] sheep: > [0] sheep will be added into delayed_nodes list, needn't to restart > epoch of [0] sheep = 1 > epoch of [1,2,3] sheeps = 2 > cluster status = WAIT_FOR_JOIN (waits [3] sheep) > > 5) Start [3] sheep: > epoch of [0,1,2,3] sheeps = 3 > cluster status = OK > Now cluster start working... > > Signed-off-by: Yunkai Zhang <[email protected]> > --- > sheep/group.c | 5 ----- > 1 file changed, 5 deletions(-)
Applied, thanks! Kazutaka -- sheepdog mailing list [email protected] http://lists.wpkg.org/mailman/listinfo/sheepdog
