On Fri, Jun 5, 2020 at 2:54 PM 张铎(Duo Zhang) <palomino...@gmail.com> wrote: > So the result is for all data in block cache? What is the block cache > settings for these two clusters?
yes. Configuration: - hfile.block.cache.size = 0.4 - heap size 18.63 GiB (don't ask me why it was not 20 ;-)) some relevant statistics from one of the region servers: - Cache Size Limit 7.5 GB - Size of Blocks 1.6 GB When doing one of the scan tests, the hits increase, the misses stay stable, and consequently the hit ratio increases as well. So essentially it is a 100% hit ratio for the scope of the tests. Jan - NGDATA
