Table of Contents
hbase.regionserver.handler.count
hfile.block.cache.size
hbase.regionserver.global.memstore.upperLimit
hbase.regionserver.global.memstore.lowerLimit
hbase.hstore.blockingStoreFiles
hbase.hregion.memstore.block.multiplier
RAM, RAM, RAM. Don't starve HBase.
Use a 64-bit platform (and 64-bit JVM).
Watch out for swapping. Set swappiness to 0.