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Jason Dere updated HIVE-16462: ------------------------------ Resolution: Fixed Fix Version/s: 3.0.0 Status: Resolved (was: Patch Available) Committed to master > Vectorization: Enabling hybrid grace disables specialization of all reduce > side joins > ------------------------------------------------------------------------------------- > > Key: HIVE-16462 > URL: https://issues.apache.org/jira/browse/HIVE-16462 > Project: Hive > Issue Type: Bug > Components: Vectorization > Reporter: Jason Dere > Assignee: Jason Dere > Fix For: 3.0.0 > > Attachments: HIVE-16462.1.patch, HIVE-16462.2.patch > > > Observed by [~gopalv]. > Having grace hash join enabled prevents the specialized vector hash joins > during the vectorizer stage of query planning. However > hive.llap.enable.grace.join.in.llap will later disable grace hash join > (LlapDecider runs after Vectorizer). If we can disable the grace hash join > before vectorization kicks in then we can still benefit from the specialized > vector hash joins. > This can be special cased for the llap.execution.mode=only case. -- This message was sent by Atlassian JIRA (v6.3.15#6346)