[ https://issues.apache.org/jira/browse/IMPALA-9473?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Joe McDonnell reassigned IMPALA-9473: ------------------------------------- Assignee: Joe McDonnell > Add counts of the number of hits, misses, and cache entries > ----------------------------------------------------------- > > Key: IMPALA-9473 > URL: https://issues.apache.org/jira/browse/IMPALA-9473 > Project: IMPALA > Issue Type: Improvement > Components: Backend > Affects Versions: Impala 3.4.0 > Reporter: Joe McDonnell > Assignee: Joe McDonnell > Priority: Major > > The data cache currently reports metrics about hit bytes, miss bytes, and > total bytes in the cache. Since there are entries of a variety of sizes in > the cache, it is useful to have the actual counts for hits, misses, and total > number of entries in the cache. > The cache improves performance more by reducing the latency of requests > (proportional to # of hits) than by increasing the bandwidth of transfers > (proportional to # of bytes). Cache performance may improve by preferring > smaller entries and thus hit bytes. It is useful to track both types of > metrics. -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-all-unsubscr...@impala.apache.org For additional commands, e-mail: issues-all-h...@impala.apache.org