Hi all, Question: when a regionserver shuts down cleanly after a YouAreDeadException and the master nicely reassigns the regions, will you loose any data that was written to the memstore of the dead RS when not using WAL?
There was no hard crash and not a single error in any of the logs (except for the FATAL: YouAreDeadException). The RS lost its zookeeper session after a timeout, probably GC combined with some other starvation on heavy load. I think the memstore flushes on shutdown, but I am not entirely sure what happens in the situation where regions are already opened by other regionservers when the dying executes the shutdown code. Can I assume that the RS that gets reassigned a region creates a new HFile and that this will be compacted together with the one left by the dead RS at the next compaction run? Thanks, Friso
