Affects Version/s: 2.5
Fix Version/s: None
- Start cluster, load data
- Start additional node that not in BLT
- Repeat 10 times: kill 1 node in baseline and 1 node not in baseline, start node in blt and node not in BLT
Node in baseline in some moment may unable to start because of corrupted WAL:
Notice that there is no loading on cluster at all - so there is no reason to corrupt WAL, rebalance should be interruptible.
Also there is another scenario that may case same error (but also may cause JVM crash)
- Start cluster, load data, start nodes
- Repeat 10 times: kill 1 node in baseline, clean LFS, start node again, while rebalance blink node that should rebalance data to previously killed node
Node that should rebalance data to cleaned node may corrupt own WAL. But this second scenario has configuration "error" - number of backups in each case is 1. So obviously 2 nodes blinking actually may cause data loss.