[ https://issues.apache.org/jira/browse/KYLIN-5794?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
pengfei.zhan closed KYLIN-5794. ------------------------------- Assignee: pengfei.zhan Resolution: Duplicate > Add Spark parquet footer read cache > ----------------------------------- > > Key: KYLIN-5794 > URL: https://issues.apache.org/jira/browse/KYLIN-5794 > Project: Kylin > Issue Type: Improvement > Reporter: Zhimin Wu > Assignee: pengfei.zhan > Priority: Major > > *Optimization Proposal* > In Kylin, the index storage is in Parquet format. When querying, if Spark > reads Parquet data, it needs to read the Footer information first. In cases > where there are many columns, reading the Footer can consume a considerable > amount of time. Therefore, caching the Footer information can improve query > performance. -- This message was sent by Atlassian Jira (v8.20.10#820010)