Hi, I have a cluster using *HBase 1.1.2* where I have a table and a local index (using *Apache Phoenix 4.6*) in total both tables have *300 regions* (aprox: *18 regions per server*), my* hbase.hregion.max.filesize=30GB *and my region sizes are now *~4.5GB compressed (~7GB uncompressed)*. However each time I restart a RS sometimes a region gets split. This is unexpected because my key space is uniform (using MD5) and if the problem was my *region.size > * *hbase.hregion.max.filesize *I would expect to have all the regions or almost all splitting but this only happens when I restart a RS and it happens only for 1 or 2 regions.
What are the different scenarios where a region can split? What are the right steps to restart a region server in order to avoid these unexpected splits? Thank you, Cheers Pedro
