[ https://issues.apache.org/jira/browse/SPARK-43232?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17715417#comment-17715417 ]
ASF GitHub Bot commented on SPARK-43232: ---------------------------------------- User 'ulysses-you' has created a pull request for this issue: https://github.com/apache/spark/pull/40915 > Improve ObjectHashAggregateExec performance for high cardinality > ---------------------------------------------------------------- > > Key: SPARK-43232 > URL: https://issues.apache.org/jira/browse/SPARK-43232 > Project: Spark > Issue Type: Improvement > Components: SQL > Affects Versions: 3.5.0 > Reporter: XiDuo You > Priority: Major > > The `ObjectHashAggregateExec` has three preformance issues: > - heavy overhead of scala sugar in `createNewAggregationBuffer` > - unnecessary grouping key comparation after fallback to sort based > aggregator > - the aggregation buffer in sort based aggregator is not reused for all rest > rows > -- This message was sent by Atlassian Jira (v8.20.10#820010) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org