greetings,
I have a cluster which contains a dozens of PCs with 4cores and
4GB ram each, at first there were only 5 regionservers in the cluster, now
we have added 18 regionservers into the cluseter.
But after reading the log, I have some questions, hope you guys
can help me out.
1. the cluster will reassign the regions around old
regionservers and newly added regionservers because of auto-balancing,
right?
2. I saw a lot of regions OPEN messages, does this means the
regionserver will load the whole regoin into memory or just portion of it,
or just the index(?I don't know what is in the index data)?
3. will the memory be released after the loaded region opened is
not needed anymore, Coz I don't see anything from the log.
