@xuchuanyin Count star on carbon rely over the carbon index and carbonindexmerge so it will load the index files into the driver LRU cache.
@litao If there is no other query and executing the same sql again then increasing memory footprint from 14g to 20g really looks like a memory leak. -Regards, Shahid On Thu 17 Jan, 2019, 6:29 AM litao <[email protected] wrote: > Do you mean for the same query, even if the memory configured for LRU is > big > enough, some of the cached entries for index still get purged? > --yes i think it is. > > However, since your query is purely count-star without any conditions, I > suppose the query may not use the index are all, which means the LRU cache > may donot work for your query. > --but by logs we can see the carbonindexmerge file load to LRUCache. > > > > -- > Sent from: > http://apache-carbondata-dev-mailing-list-archive.1130556.n5.nabble.com/ >
