[ https://issues.apache.org/jira/browse/SPARK-24978?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Wenchen Fan reassigned SPARK-24978: ----------------------------------- Assignee: caoxuewen > Add spark.sql.fast.hash.aggregate.row.max.capacity to configure the capacity > of fast aggregation. > ------------------------------------------------------------------------------------------------- > > Key: SPARK-24978 > URL: https://issues.apache.org/jira/browse/SPARK-24978 > Project: Spark > Issue Type: Improvement > Components: SQL > Affects Versions: 2.4.0, 3.0.0 > Reporter: caoxuewen > Assignee: caoxuewen > Priority: Major > > this pr add a configuration parameter to configure the capacity of fast > aggregation. > Performance comparison: > /* > Java HotSpot(TM) 64-Bit Server VM 1.8.0_60-b27 on Windows 7 6.1 > Intel64 Family 6 Model 94 Stepping 3, GenuineIntel > Aggregate w multiple keys: Best/Avg Time(ms) Rate(M/s) > Per Row(ns) Relative > > ------------------------------------------------------------------------------------------------ > fasthash = default 5612 / 5882 3.7 > 267.6 1.0X > fasthash = config 3586 / 3595 5.8 > 171.0 1.6X > */ -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org