[ https://issues.apache.org/jira/browse/SPARK-37896?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Wenchen Fan reassigned SPARK-37896: ----------------------------------- Assignee: Yaohua Zhao > ConstantColumnVector: a column vector with same values > ------------------------------------------------------ > > Key: SPARK-37896 > URL: https://issues.apache.org/jira/browse/SPARK-37896 > Project: Spark > Issue Type: Improvement > Components: SQL > Affects Versions: 3.2.0 > Reporter: Yaohua Zhao > Assignee: Yaohua Zhao > Priority: Major > Fix For: 3.3.0 > > > Introduce a new column vector named `ConstantColumnVector`, it represents a > column vector where every row has the same constant value. > It could help improve performance on hidden file metadata columnar file > format, since metadata fields for every row in each file are exactly the > same, we don't need to copy and keep multiple copies of data. -- This message was sent by Atlassian Jira (v8.20.1#820001) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org