[ https://issues.apache.org/jira/browse/KYLIN-2728?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Zhong Yanghong reopened KYLIN-2728: ----------------------------------- Assignee: Ma Gang (was: Zhong Yanghong) > Introduce a new cuboid scheduler based on cuboid tree rather than static rules > ------------------------------------------------------------------------------ > > Key: KYLIN-2728 > URL: https://issues.apache.org/jira/browse/KYLIN-2728 > Project: Kylin > Issue Type: Sub-task > Affects Versions: v2.1.0 > Reporter: Zhong Yanghong > Assignee: Ma Gang > Priority: Major > Fix For: v2.2.0 > > > Rather than depending on static rules to define a parent-child relationship > between cuboids, a cuboid tree can be constructed for this relationship. In > this tree, the root is the base cuboid. For a cuboid, it may have many legal > parent cuboids. We should choose the {color:#f79232}best parent {color}cuboid > as its parent in this tree. Then how to define the best? It's related two > rules as follows: > * If we know the row count, choose the one with the least row count > * Otherwise, choose the smallest cuboid > Based on the cuboid tree, we introduced a new cuboid scheduler called > {{TreeCuboidScheduler}}. And both cube building & query can be based on > {{TreeCuboidScheduler}}. -- This message was sent by Atlassian JIRA (v7.6.3#76005)