[ https://issues.apache.org/jira/browse/HBASE-2253?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jonathan Gray updated HBASE-2253: --------------------------------- Status: Patch Available (was: Open) Patch up for review on rb. > Show Block cache hit ratio for requests where cacheBlocks=true > -------------------------------------------------------------- > > Key: HBASE-2253 > URL: https://issues.apache.org/jira/browse/HBASE-2253 > Project: HBase > Issue Type: Improvement > Reporter: Dave Latham > Assignee: Jonathan Gray > Priority: Minor > Fix For: 0.90.0 > > > We've been disabling block caching for MR jobs and other big scans. It seems > to improve cache performance, but it's difficult to measure the hit ratio > because even scans that don't cache blocks still request blocks from the > cache (which is good), and those requests affect the hit/miss stats, which > makes it difficult to see how the queries where cacheBlocks=true are > performing. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.