nats-io / nats-streaming-server / 1921

92%

main: 92%

Pull #839

travis-ci

[FIXED] Clustering: channel first/last sequence may fall to zero

This could happen if the leader took a snapshot while messages were
not yet expired, then a node is started without state and tries
to restore from this snapshot. If the messages have expired by then,
no message would be stored. If that node later did a snapshot itself,
it would persist in it the first/last being zero. If no message are
published and this node becomes leader, it would start storing
messages at the wrong sequence and would also send the bad snapshot
to other nodes.

Resolves #833

Signed-off-by: Ivan Kozlovic <ivan@synadia.com>

38 of 38 new or added lines in 4 files covered. (100.0%)

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