Hi all: When the broker crashes，topic will be transferred to other active brokers, at this time, the topic will be in the fencing state and will recover, because the last confirm msgid is not the latest. steps(E=3, W=3, A=2) ： 1、find the largest LAC from the bookies node where the ledger is located. 2、compare backwards， whether the entry satisfies ack >2. 3、if the conditions are met, the entry is considered safe and the LAC is updated. 4、finally update the metadata information and close the ledger
My question is if bookie also crashes at this time，how to go to security settings LAC? E.g: [image: image.png] the LAC of bookie itself is brought over by the broker delay，therefore, the LAC will be different between bookies. This question has been bothering me，hope there is an accurate explanation. Thanks, Dezhi Liu
