[ https://issues.apache.org/jira/browse/PHOENIX-4718?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16459840#comment-16459840 ]
Mujtaba Chohan commented on PHOENIX-4718: ----------------------------------------- [~jamestaylor] verified that performance is inline with previous releases with the patch applied. > Decrease overhead of tracking aggregate heap size > ------------------------------------------------- > > Key: PHOENIX-4718 > URL: https://issues.apache.org/jira/browse/PHOENIX-4718 > Project: Phoenix > Issue Type: Bug > Reporter: James Taylor > Assignee: James Taylor > Priority: Major > Fix For: 4.14.0, 5.0.0 > > Attachments: PHOENIX-4718-4.x-HBase-0.98.patch, PHOENIX-4718.patch, > PHOENIX-4718_v2.patch, PHOENIX-4718_v3.patch > > > Since PHOENIX-4148, we track the heap size while aggregation is occurring. > This decreased performance of aggregation by ~20%. We really only need to > track this for the DistinctValueWithCountServerAggregator (used by DISTINCT > COUNT, DISTINCT, PERCENTILE functions, and STDDEV functions). By > conditionally tracking, we should be able to bring perf back to what it was > before. -- This message was sent by Atlassian JIRA (v7.6.3#76005)