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Cheng Hao commented on SPARK-2215: ---------------------------------- The multi-way join implementation in Shark is quite complicated, but we have real case to show this can improve the join performance incredibly. I can start working the prototype for it soon. > Multi-way join > -------------- > > Key: SPARK-2215 > URL: https://issues.apache.org/jira/browse/SPARK-2215 > Project: Spark > Issue Type: Sub-task > Components: SQL > Reporter: Cheng Hao > Priority: Minor > > Support the multi-way join (multiple table joins) in a single reduce stage if > they have the same join keys. -- This message was sent by Atlassian JIRA (v6.2#6252)