[ https://issues.apache.org/jira/browse/SPARK-35630?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Apache Spark reassigned SPARK-35630: ------------------------------------ Assignee: (was: Apache Spark) > ExpandExec should not introduce unnecessary exchanges > ----------------------------------------------------- > > Key: SPARK-35630 > URL: https://issues.apache.org/jira/browse/SPARK-35630 > Project: Spark > Issue Type: Improvement > Components: SQL > Affects Versions: 3.2.0 > Reporter: Tanel Kiis > Priority: Major > > The Expand is commonly introduced by the RewriteDistinctAggregates optimizer > rule. > In that case there can be several attributes that are kept as they are by the > Expand. > If the child's output is partitioned by those attributes, then so will be the > output of the Expand. > In general case the Expand can output data with arbitrary partitioning, so > set it as UNKNOWN partitioning. -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org