[ https://issues.apache.org/jira/browse/KYLIN-1068?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
liyang updated KYLIN-1068: -------------------------- Sprint: (was: Sprint 49) > Optimize the memory footprint for TopN counter > ---------------------------------------------- > > Key: KYLIN-1068 > URL: https://issues.apache.org/jira/browse/KYLIN-1068 > Project: Kylin > Issue Type: Improvement > Components: Job Engine > Affects Versions: v1.4.0 > Reporter: Shaofeng SHI > Assignee: Shaofeng SHI > Fix For: v1.4.0 > > > The TopN implementation in StreamSummary is not perfect for Kylin, as Kylin > use a Double typed counter; In a big data scenario, the possibility of > multiple key having the same double counter is very low, so the data > structure may not be memory economic; -- This message was sent by Atlassian JIRA (v6.3.4#6332)