On Sun, Jun 7, 2020 at 7:49 AM Anoop John <[email protected]> wrote: > As per the above configs, it looks like Bucket Cache is not being used. > Only on heap LRU cache in use.
True (but it is large enough to hold everything, so I don't think it matters). > @Jan - Is it possible for you to test with off heap Bucket Cache? Config > bucket cache off heap mode with size ~7.5 GB I did a quick test but it seems not to make a measurable difference. If anything, it is actually slightly slower even. I see 100% hit ratio in the L1 LruBlockCache and effectively also 100% in the L2 BucketCache (hit ratio is not yet at 100% but hits increase with every test and misses do not). Given that the LruBlockCache was already large enough to cache all the data anyway, I did not expect this to help either, to be honest. > Do you have any DataBlockEncoding enabled on the CF? Yes, FAST_DIFF. But this is of course true in both the tests with hbase2 and hbase1. Jan
