If you are defeating caching you will want to patch in HDFS-347. Good luck!
On Fri, Jun 24, 2011 at 3:25 PM, Sateesh Lakkarsu <[email protected]> wrote: > block cache was at default 0.2%, the id's being looked up don't repeat and > each one has a lot of versions, so not expecting cache hits - also was > seeing a lot of cache evictions as is. Can we get better performance in such > a scenario? > > Does having more discs help? or would RS be the bottleneck? > > Lohit: > Without compression, I think we were seeing 300+ - that was with default > config > Memory for RS is 4GB and DataNode at 1G >
