I set all user tables with blockCache on, but set the IN_MEMORY conf to false
At 2016-06-16 18:18:44, "Heng Chen" <heng.chen.1...@gmail.com> wrote: >bq. if we do not set any user tables IN_MEMORY to true, then the whole >hbase just need to cache hbase:meta data to in_memory LruBlockCache. > >You set blockcache to be false for other tables? > >2016-06-16 16:21 GMT+08:00 WangYQ <wangyongqiang0...@163.com>: > >> in hbase 0.98.10, if we use LruBlockCache, and set regionServer's max heap >> to 10G >> in default: >> the size of in_memory priority of LruBlockCache is : >> 10G * 0.4 * 0.25 = 1G >> >> >> 0.4: hfile.block.cache.size >> 0.25: hbase.lru.blockcache.memory.percentage >> >> >> if we do not set any user tables IN_MEMORY to true, then the whole hbase >> just need to cache hbase:meta data to in_memory LruBlockCache. >> hbase:meta does not split , so just need one regionServer to cache, so >> there is some waste in blockCache >> >> >> i think the regionServer open hbase:meta need to set in_memory >> LruBlockCache to a certain size >> other regionServer set hbase.lru.blockcache.memory.percentage to 0, do not >> need to allocate in_memory LruBlockCache.
