[ https://issues.apache.org/jira/browse/SPARK-32399?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Apache Spark reassigned SPARK-32399: ------------------------------------ Assignee: (was: Apache Spark) > Support full outer join in shuffled hash join and broadcast hash join > --------------------------------------------------------------------- > > Key: SPARK-32399 > URL: https://issues.apache.org/jira/browse/SPARK-32399 > Project: Spark > Issue Type: Sub-task > Components: SQL > Affects Versions: 3.1.0 > Reporter: Cheng Su > Priority: Minor > > Currently for SQL full outer join, spark always does a sort merge join no > matter of how large the join children size are. Inspired by recent discussion > in [https://github.com/apache/spark/pull/29130#discussion_r456502678] and > [https://github.com/apache/spark/pull/29181], I think we can support full > outer join in shuffled hash join and broadcast hash join in a way that - when > looking up stream side keys from build side {{HashedRelation}}. Mark this > info inside build side {{HashedRelation}}, and after reading all rows from > stream side, output all non-matching rows from build side based on modified > {{HashedRelation}}. But more design details need to be figured out for this > JIRA. -- 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