Jan 26 2012
∞
“ tPR/PW are checked by looking at the preflist for the partition and checking
that the number of primaries in the preflists satisifies PR/PW. However, in the
case of a yanked network cable, kernel panic or VM pause, where no FIN packet
is sent, in the interval before the other nodes notice a node has become
unavailable, the preference list is not recalculated and so PR/PW checks will
continue to pass. Once erlang notices the node is down, this goes away, but
there is a significant window before this happens.
that the number of primaries in the preflists satisifies PR/PW. However, in the
case of a yanked network cable, kernel panic or VM pause, where no FIN packet
is sent, in the interval before the other nodes notice a node has become
unavailable, the preference list is not recalculated and so PR/PW checks will
continue to pass. Once erlang notices the node is down, this goes away, but
there is a significant window before this happens.
